Search this site

Neem extracts from Azadirachta indica contain Azadirachtin, toxic to pests, acting as antifeedant, repellent, and sterilizer. Organic gardeners use it for pest control. < Microbial Species Neem Extracts from Azadirachta Indica Tree Neem extracts from Azadirachta indica contain Azadirachtin, toxic to pests, acting as antifeedant, repellent, and sterilizer. Organic gardeners use it for pest control. Strength 2500 - 50000ppm Product Enquiry Buy this species Download Brochure Benefits Environmental Compatibility Neem extracts degrade rapidly, leaving no harmful residues and posing minimal risk to non-target species and ecosystems. Sterilizing Effect on Pests Neem extracts induce sterility in insect pests, reducing their reproductive capabilities and population growth. Insect Repellent Properties Neem extracts, containing Azadirachtin, act as antifeedants and repellents against insect pests, disrupting feeding and reducing infestation. Antifungal Activity Azadirachtin in neem extracts exhibits fungicidal properties, effectively controlling fungal diseases like powdery mildew and leaf rust. Dosage & Application Additional Info Scientific References Mode of Action Sustainability Advantage FAQ Scientific References Content coming soon! Mode of Action Content coming soon! Additional Info Target pests: Aphids, whiteflies, spider mites, powdery mildew, leaf rust Recommended Crops: Cereals, millets, pulses, oilseeds, fibre crops, sugar crops, forage crops, plantation crops, vegetables, fruits, spices, flowers, medicinal crops, aromatic crops, orchards, and ornamentals Compatibility: Compatible with Bio Pesticides, Bio Fertilizers, and Plant growth hormones but not with chemical fertilizers and chemical pesticides. Shelf Life: Stable within 1 year from the date of manufacturing. Packing: We offer tailor-made packaging as per customers' requirements. Dosage & Application Contact us for more details FAQ Content coming soon! Sustainability Advantage Related Products More Products Resources Read all

Lactobacillus rhamnosus supports gut health, enhances immune function, and helps prevent gastrointestinal infections for better digestive health. < Microbial Species Lactobacillus rhamnosus Lactobacillus rhamnosus supports gut health, enhances immune function, and helps prevent gastrointestinal infections for better digestive health. Strength 1 x 10⁸ CFU per gram / 1 x 10⁹ CFU per gram / 1 x 10¹⁰ CFU per gram Product Enquiry Buy this species Download Brochure Benefits Immune System Enhancement It enhances immune function by stimulating the production of antibodies and improving the body’s defense against infections. Digestive Health Support This probiotic promotes a balanced gut microbiota, alleviating symptoms of diarrhea and constipation for improved digestive comfort. Weight Management Support This strain may aid in weight management by influencing fat metabolism and regulating appetite. Vaginal Health Promotion It helps maintain vaginal microbiota balance, reducing the risk of infections and promoting overall reproductive health. Dosage & Application Additional Info Scientific References Mode of Action Sustainability Advantage FAQ Scientific References Content coming soon! Mode of Action Content coming soon! Additional Info Key Features All microbial strains are characterized using 16S rDNA. All products are non-GMO. No animal-derived materials are used. The typical shelf life is 2 years. All strains are screened in-house using high-throughput screening methods. We can customize manufacturing based on the required strength and dosage. High-resilience strains Stable under a wide pH range Stable under a broad temperature range Stable in the presence of bile salts and acids Do not show antibiotic resistance Packaging Material The product is packaged in a multi-layer, ultra-high barrier foil that is heat-sealed and placed inside a cardboard shipper or plastic drum. Shipping Shipping is available worldwide. Probiotic packages are typically transported in insulated Styrofoam shippers with dry ice to avoid exposure to extreme high temperatures during transit. Support Documentation Certificate of Analysis (COA) Specifications Material Safety Data Sheets (MSDS) Stability studies (18 months) Certifications ISO 9001 ISO 22000 HACCP Halal and Kosher Certification (for Lactobacillus strains) FSSAI Dosage & Application Contact us for more details FAQ Content coming soon! Sustainability Advantage Related Products Bifidobacterium animalis Bifidobacterium bifidum Bifidobacterium breve Bifidobacterium infantis Bifidobacterium longum Clostridium butyricum Lactobacillus acidophilus Lactobacillus bulgaricus More Products Resources Read all

Lactobacillus bulgaricus aids in lactose digestion, promotes gut health, and is commonly used in yogurt production for probiotic benefits. < Microbial Species Lactobacillus bulgaricus Lactobacillus bulgaricus aids in lactose digestion, promotes gut health, and is commonly used in yogurt production for probiotic benefits. Strength 1 x 10⁸ CFU per gram / 1 x 10⁹ CFU per gram / 1 x 10¹⁰ CFU per gram Product Enquiry Buy this species Download Brochure Benefits Yogurt Fermentation This probiotic is essential for yogurt production, contributing to its unique flavor, texture, and health benefits. Nutrient Absorption Improvement It aids in the absorption of essential nutrients, such as vitamins and minerals, promoting overall health. Digestive Health Enhancement It supports digestive health by improving gut microbiota balance and alleviating symptoms of lactose intolerance. Immune System Support This strain boosts immune function by stimulating the production of immune cells and enhancing the body’s defense against pathogens. Dosage & Application Additional Info Scientific References Mode of Action Sustainability Advantage FAQ Scientific References Content coming soon! Mode of Action Content coming soon! Additional Info Key Features All microbial strains are characterized using 16S rDNA. All products are non-GMO. No animal-derived materials are used. The typical shelf life is 2 years. All strains are screened in-house using high-throughput screening methods. We can customize manufacturing based on the required strength and dosage. High-resilience strains Stable under a wide pH range Stable under a broad temperature range Stable in the presence of bile salts and acids Do not show antibiotic resistance Packaging Material The product is packaged in a multi-layer, ultra-high barrier foil that is heat-sealed and placed inside a cardboard shipper or plastic drum. Shipping Shipping is available worldwide. Probiotic packages are typically transported in insulated Styrofoam shippers with dry ice to avoid exposure to extreme high temperatures during transit. Support Documentation Certificate of Analysis (COA) Specifications Material Safety Data Sheets (MSDS) Stability studies (18 months) Certifications ISO 9001 ISO 22000 HACCP Halal and Kosher Certification (for Lactobacillus strains) FSSAI Dosage & Application Contact us for more details FAQ Content coming soon! Sustainability Advantage Related Products Bifidobacterium animalis Bifidobacterium bifidum Bifidobacterium breve Bifidobacterium infantis Bifidobacterium longum Clostridium butyricum Lactobacillus acidophilus Lactobacillus casei More Products Resources Read all

Rhodospirillum rubrum is a versatile phototrophic bacterium known for anoxygenic photosynthesis, nitrogen fixation, and carbon cycling. It contributes to soil fertility, degrades pollutants, and produces biohydrogen under specific conditions, making it valuable for ecological research, bioremediation, and renewable energy applications. < Microbial Species Rhodospirillum rubrum Rhodospirillum rubrum is a versatile phototrophic bacterium known for anoxygenic photosynthesis, nitrogen fixation, and carbon cycling. It contributes to soil fertility, degrades pollutants, and produces biohydrogen under specific conditions, making it valuable for ecological research, bioremediation, and renewable energy applications. Strength 1 x 10⁸ CFU per gram / 1 x 10⁹ CFU per gram / 1 x 10¹⁰ CFU per gram Product Enquiry Buy this species Download Brochure Benefits Nitrogen Fixation Capable of fixing atmospheric nitrogen, enhancing soil fertility and promoting healthy plant growth. Photosynthetic Capability Utilizes light energy for growth, contributing to sustainable biomass production and ecological balance. Organic Pollutant Degradation Effective in degrading various organic contaminants, supporting environmental bioremediation efforts. Hydrogen Production Known for its ability to produce hydrogen gas, making it a promising candidate for renewable energy applications. Dosage & Application Additional Info Scientific References Mode of Action Sustainability Advantage FAQ Scientific References Content coming soon! Mode of Action Content coming soon! Additional Info Contact us for more details Dosage & Application Contact us for more details FAQ Content coming soon! Sustainability Advantage Related Products Saccharomyces cerevisiae Bacillus polymyxa Thiobacillus novellus Thiobacillus thiooxidans Alcaligenes denitrificans Bacillus licheniformis Bacillus macerans Citrobacter braakii More Products Resources Read all

Bacillus thuringiensis subsp. kurstaki (Btk) is a gram-positive, spore-forming bacterium naturally found in soils worldwide. It is renowned for its specificity and effectiveness in managing lepidopteran pests, particularly during the larval stage. As a biological insecticide, Btk has become a cornerstone of integrated pest management (IPM) and organic agriculture, combining high efficacy with environmental safety. < Microbial Species Bacillus thuringiensis subsp. kurstaki Bacillus thuringiensis subsp. kurstaki (Btk) is a gram-positive, spore-forming bacterium naturally found in soils worldwide. It is renowned for its specificity and effectiveness in managing lepidopteran pests, particularly during the larval stage. As a biological insecticide, Btk has become a cornerstone of integrated pest management (IPM) and organic agriculture, combining high efficacy with environmental safety. Strength 1 x 10⁸ CFU per gram / 1 x 10⁹ CFU per gram / 1 x 10¹⁰ CFU per gram Product Enquiry Buy this species Download Brochure Benefits Compatible with IPM Integrates well with Integrated Pest Management (IPM) practices. Environmental Safety Harmless to beneficial insects like bees and other pollinators. Residue-free Leaves no harmful residues on plants or in the environment after application. Targeted Pest Control Targets and effectively controls the larvae of lepidopteran pests such as caterpillars. Dosage & Application Additional Info Scientific References Mode of Action Sustainability Advantage FAQ Scientific References Scientific References and Resources Health Canada, PMRA. Btk – Bacillus thuringiensis subspecies kurstaki Fact Sheet. United States Environmental Protection Agency (EPA). Biopesticide Fact Sheet: Bacillus thuringiensis. EPA Biopesticide Registration Information Bacillus thuringiensis: A story of a successful bioinsecticide. Insect Biochemistry and Molecular Biology, 41(7), 423–431.DOI:10.1016/j.ibmb.2011.02.006 Bacillus thuringiensis: a century of research, development and commercial applications. Plant Biotechnology Journal, 9(3), 283–300.DOI:10.1111/j.1467-7652.2011.00595.x WHO/IPCS (1999). Bacillus thuringiensis. Environmental Health Criteria World Health Organization. Glare, T. R., & O’Callaghan, M. (2000). Bacillus thuringiensis: Biology, Ecology and Safety Mode of Action Btk’s insecticidal action is based on the production of parasporal crystalline inclusions containing Cry and Cyt protein toxins during sporulation. Upon ingestion by susceptible larvae (primarily of the order Lepidoptera), the following steps occur: Solubilization: The alkaline pH of the insect midgut (>9.0) solubilizes the crystal proteins. Activation: Solubilized protoxins are proteolytically cleaved by midgut proteases into active toxins. Receptor Binding: Activated toxins bind to specific receptors (cadherins, aminopeptidases, and alkaline phosphatases) on midgut epithelial cells. Pore Formation: Binding induces membrane insertion and pore formation, disrupting ionic homeostasis. Cell Lysis and Septicemia: Midgut cells lyse, leading to paralysis of the digestive tract. The insect ceases feeding and dies within 24–72 hours, typically from starvation or septicemia caused by opportunistic microbes. This highly selective mode of action ensures that Btk does not affect non-target organisms, including pollinators, predators, or mammals. Additional Info Target Pests Btk is effective against a wide array of lepidopteran pests, such as: Agricultural: Cabbage looper ( Trichoplusia ni ), diamondback moth ( Plutella xylostella ), corn earworm ( Helicoverpa zea ), armyworms ( Spodoptera spp. ) Forestry: Gypsy moth ( Lymantria dispar ), spruce budworm ( Choristoneura fumiferana ), tent caterpillar ( Malacosoma spp. ) Horticultural: Fruit borers, leafrollers, and cutworms Recommended Crops: Broccoli, Brussels sprouts, cabbage, cauliflower, collard greens, kale, and turnips Safety and Environmental Profile Safety and Environmental Profile Human Safety : Non-pathogenic to humans. Btk spores and Cry proteins are inactivated in acidic stomachs. Evaluated for dermal, ocular, and inhalation toxicity with no adverse effects. No reports of endocrine disruption. Non-Target Safety : No toxicity observed in honeybees, fish, birds, amphibians, or mammals. Btk acts only on larval Lepidoptera due to receptor-specific activation. Environmental Fate : Btk spores and toxins degrade under UV exposure and microbial action. Does not bioaccumulate or leach beyond 25 cm in soil. Regulatory and Organic Status Certifications: OMRI-listed; approved for use in EU organic systems. Regulatory Status: Classified as a "Restricted Product" in Canada—requires certified applicator and permit. Similar restricted use classifications apply in EU and U.S. under EPA regulations. Residue Tolerance: Exempt from MRLs (maximum residue limits) due to minimal risk. Dosage & Application Wettable Powder: 18000 IU per milligram Foliar Application : Dose: 3-5 g/L water 1 Acre dose: 600 g - 1 Kg 1 Ha dose: 1.5 - 2.5 Kg Apply at the early incidence of caterpillar pests. Spray twice at weekly intervals after the first application. Foliar Application Method Foliar application should be performed at the early onset of pest incidence. Follow up with 1-2 additional sprays at weekly intervals. Mix Bacillus Thuringiensis Subsp. Kurstaki at recommended doses in sufficient water and spray on foliage, fruit, or plants. Note: Do not store Bacillus Thuringiensis Subsp. Kurstaki solution for more than 24 hours after mixing with water. FAQ What makes Btk more suitable than chemical insecticides for caterpillar control? Btk offers selective toxicity, posing no threat to non-target fauna or humans. It supports beneficial insects and microbial soil health and avoids resistance buildup when rotated effectively. Does Btk affect butterflies? Only the larval (caterpillar) stage is susceptible. To protect non-target caterpillars, timing and location of applications should be carefully managed. Can Btk be used in organic farming? Yes. Btk is certified organic, OMRI-listed, and widely used by organic producers globally. How fast does Btk work? Larvae stop feeding within hours, and mortality occurs in 2–5 days depending on species and exposure. Is it safe to harvest crops after Btk application? Absolutely. Since Btk is non-toxic to humans and degrades rapidly, there is no pre-harvest interval required. Sustainability Advantage Related Products Bacillus popilliae Bacillus thuringiensis israelensis Lysinibacillus sphaericus More Products Resources Read all

Paenibacillus azotofixans: Utilized in agricultural practices to promote plant growth by fixing atmospheric nitrogen, thus improving soil fertility, especially in various crop fields. < Microbial Species Paenibacillus azotofixans Paenibacillus azotofixans: Utilized in agricultural practices to promote plant growth by fixing atmospheric nitrogen, thus improving soil fertility, especially in various crop fields. Strength 1 x 10⁸ CFU per gram / 1 x 10⁹ CFU per gram / 1 x 10¹⁰ CFU per gram Product Enquiry Buy this species Download Brochure Benefits Nitrogen Fixation Paenibacillus azotofixans fixes atmospheric nitrogen into ammonia, which enhances nitrogen availability for plants, supporting their growth and development. Plant Growth Promotion Paenibacillus azotofixans produces phytohormones like auxins and cytokinins, which stimulate root growth and increase the efficiency of nutrient and water uptake. Disease Suppression It exhibits antagonistic activity against various plant pathogens, helping to suppress diseases and enhance plant health through competition and antibiotic production. Phosphate Solubilization It solubilizes phosphate in the soil, making it more accessible to plants, which improves their phosphorus uptake and overall nutrient status. Dosage & Application Additional Info Scientific References Mode of Action Sustainability Advantage FAQ Scientific References Molecular Biology and Genetics Genome-Scale Studies: Comprehensive transcriptome analysis of nitrogen fixation in Paenibacillus species has identified over 9,000 differentially expressed genes involved in nitrogen metabolism, energy production, and stress response. These studies provide detailed insights into the molecular mechanisms underlying nitrogen fixation efficiency. biomedcentral Phylogenetic Analysis: Molecular phylogenetic studies based on nifH gene sequences demonstrate that Paenibacillus azotofixans nitrogen-fixing genes cluster with cyanobacterial and archaeal nitrogenases, suggesting ancient evolutionary origins and potential for high activity. journals.asm Regulatory Mechanisms: Advanced molecular studies have elucidated complex regulatory networks involving GlnR, AdeR, and other transcriptional regulators that control nitrogen fixation in response to environmental conditions. microbialcellfactories.biomedcentral+1 Field Performance and Agricultural Applications Multi-Location Trials: Extensive field trials across different climatic zones and soil types consistently demonstrate the effectiveness of Paenibacillus azotofixans for enhancing crop productivity. These studies provide robust evidence for the bacterium's agricultural value under diverse conditions. pmc.ncbi.nlm.nih+1 Long-Term Sustainability: Research demonstrates that repeated application of Paenibacillus azotofixans maintains soil health and fertility without negative environmental impacts. Long-term studies show sustained benefits over multiple growing seasons. pmc.ncbi.nlm.nih Economic Analysis: Cost-benefit analyses demonstrate positive returns on investment from Paenibacillus azotofixans applications, with reduced fertilizer costs offsetting inoculation expenses while providing additional yield benefits. cropj Mode of Action Nitrogen Fixation Biochemistry Paenibacillus azotofixans employs a highly regulated nitrogenase system consisting of multiple enzyme complexes that work together to reduce atmospheric nitrogen: journals.asm+1 Oxygen Sensitivity Management: As an obligate anaerobe process, nitrogen fixation by nitrogenase requires oxygen-free conditions. Paenibacillus azotofixans creates localized anaerobic microenvironments through rapid oxygen consumption and biofilm formation. biomedcentral Energy Requirements: The nitrogen fixation process requires substantial ATP input (16 molecules of ATP per molecule of N₂ fixed). Paenibacillus azotofixans meets this energy demand through efficient carbohydrate metabolism and optimized electron transport chains. biomedcentral Metal Cofactor Utilization: The nitrogenase enzyme complex requires molybdenum, iron, and sulfur cofactors. Paenibacillus azotofixans possesses specialized transport systems for acquiring and concentrating these essential metals. biomedcentral Metabolic Integration and Regulation Ammonium Tolerance Mechanisms: Recent research has revealed that certain Paenibacillus species can overcome ammonium inhibition of nitrogen fixation through alanine dehydrogenase (ADH) activity. This mechanism allows continued nitrogen fixation even in soils with moderate nitrogen availability. microbialcellfactories.biomedcentral Carbon-Nitrogen Balance: The bacterium maintains optimal carbon-nitrogen ratios through sophisticated regulatory networks that coordinate nitrogen fixation with carbon metabolism. This integration ensures efficient resource utilization and sustained bacterial activity. journals.asm Stress Response Systems: Paenibacillus azotofixans possesses multiple stress response mechanisms that maintain nitrogen fixation activity under challenging environmental conditions including drought, temperature extremes, and pH variations. microbialcellfactories.biomedcentral Applications in Biofertilizers and Soil Health Management Commercial Biofertilizer Formulations Paenibacillus azotofixans serves as a key component in advanced biofertilizer formulations designed for various agricultural applications: indogulfbioag+1 Multi-Strain Consortiums: Commercial products often combine Paenibacillus azotofixans with complementary bacteria such as phosphorus-solubilizing bacteria and biocontrol agents to provide comprehensive plant nutrition and protection. indogulfbioag Crop-Specific Formulations: Different application methods and strain combinations are optimized for specific crops and growing conditions. Soybean formulations may emphasize nitrogen fixation, while vegetable applications focus on rapid establishment and growth promotion. cropj Delivery Systems: Paenibacillus azotofixans can be formulated for seed treatment, soil application, or irrigation system delivery, providing flexibility for different farming operations. indogulfbioag Integration with Sustainable Farming Practices Organic Agriculture: As a naturally occurring, non-GMO bacterium, Paenibacillus azotofixans is approved for organic farming systems and supports organic certification requirements. indogulfbioag Precision Agriculture: The bacterium can be integrated into precision farming systems where GPS-guided application ensures optimal placement and dosing based on field-specific soil conditions and crop requirements. Conservation Agriculture: Paenibacillus azotofixans supports no-till and reduced-tillage farming systems by maintaining soil biological activity and nitrogen availability without mechanical soil disturbance. Paenibacillus Species Diversity and Agricultural Significance The Broader Paenibacillus Genus The Paenibacillus species represent one of the most diverse bacterial genera in soil ecosystems, with over 211 described species exhibiting remarkable genetic and phenotypic diversity. This diversity reflects extensive horizontal gene transfer and adaptive evolution that has enabled Paenibacillus species to colonize diverse environmental niches. pmc.ncbi.nlm.nih+1 Genomic Diversity: Comparative genomic analyses reveal that Paenibacillus species possess highly variable genome sizes ranging from 3.9 to 10.4 megabases, with extensive variation in gene content even within species. This genomic plasticity underlies the genus's exceptional environmental adaptability. nature Metabolic Versatility: Paenibacillus species demonstrate remarkable metabolic diversity, with different species specialized for various functions including nitrogen fixation, phosphate solubilization, biocontrol, and organic matter decomposition. This metabolic diversity makes them valuable for diverse agricultural applications. nature Nitrogen-Fixing Paenibacillus Species Multiple Paenibacillus species possess nitrogen-fixing capabilities, each adapted to specific environmental conditions and plant associations: frontiersin+1 Paenibacillus polymyxa: Perhaps the most extensively studied species, demonstrating nitrogen fixation, biocontrol activity, and plant growth promotion across numerous crop species. pmc.ncbi.nlm.nih+1 Paenibacillus borealis: Isolated from forest humus, this species contributes to nitrogen cycling in forest ecosystems and demonstrates potential for forestry applications. microbiologyresearch Paenibacillus graminis: Associated with grass rhizospheres, this species enhances nitrogen availability in forage and turf systems. frontiersin Additional Info Incomplete Section Finalization Paenibacillus azotofixans is recognized for its agricultural significance as a potent nitrogen fixer and plant growth promoter. Modern molecular biology and field-scale studies have validated its benefits for crop nutrition, environmental sustainability, and cost-effectiveness. The bacterium’s versatility and resilience are supported by its diverse regulatory, metabolic, and stress response mechanisms, which make it compatible across a wide range of soil conditions and crop systems. Laboratory Contaminant Significance Paenibacillus species are widely distributed in natural and built environments, including soil, water, and air. Their ability to form spores and survive harsh conditions means they are frequent laboratory contaminants. In clinical and research laboratories, Paenibacillus can be isolated from surfaces, air, gloves, and sample materials—often as part of sterility testing. Several species, including Paenibacillus contaminans, have been specifically described as contaminants during laboratory plate handling. This is particularly relevant in low-biomass environments, as modern sequencing or culture approaches can easily detect spores or cells introduced during sample processing or from ambient air. The high occurrence of Paenibacillus as a contaminant can result in false-positive results, especially in blood cultures, sterile fluids, or low-biomass samples. Proper sample collection, rigorous sterilization, and careful interpretation of culture results are imperative. Contaminants are often identified retrospectively by phylogenetic and phenotypic analysis and may comprise the majority of positive cultures unless clear clinical evidence of infection is present. pmc.ncbi.nlm.nih+3 Human Pathogenicity Paenibacillus species are generally regarded as environmental and plant-associated bacteria. However, accumulating evidence shows that a subset can act as opportunistic pathogens in humans—particularly in immunocompromised individuals, neonates, or following traumatic injuries. Human infections are rare but increasingly described in clinical case reports and systematic reviews. Several species implicated in human disease include P. alvei, P. thiaminolyticus, P. lautus, P. provencensis, and others. Infections range from wound infections, abscesses, ocular infections, sepsis, meningitis, and, rarely, endocarditis. Pathogenicity is driven by several factors: Spore formation and environmental resilience: Spores remain viable on skin surfaces and within hospital environments, making transmission and infection possible under specific conditions. d-nb+1 Virulence factors: Some Paenibacillus possess genes for thiol-activated cytolysins, proteases, biofilm formation, and antimicrobial compound production. journals.plos+3 Antibiotic resistance: Many isolates demonstrate resistance to multiple antibiotics, particularly penicillins, clindamycin, sulfonamides, and sometimes vancomycin, calling for careful susceptibility testing. pure.psu+4 Clinical Management Recommendations Management of Paenibacillus infections hinges on accurate diagnosis and effective antimicrobial therapy. As precaution, clinicians should: Differentiate true infection from contamination: Always correlate positive cultures with clinical signs (fever, leukocytosis, infection at the site), especially when Paenibacillus is isolated from blood, sterile fluids, or deep wounds. pmc.ncbi.nlm.nih+2 Empiric and directed antibiotic therapy: Initial therapy is empiric, but due to variable resistance patterns, therapy should be adjusted based on susceptibility testing. Effective options typically include cefotaxime, ceftriaxone, gentamicin, amikacin, rifampicin, metronidazole, and levofloxacin, while resistance to penicillins, clindamycin, and vancomycin can occur. Trimethoprim-sulfamethoxazole may be used for P. urinalis. droracle+6 Remove or drain infection sources: Surgical removal of infected tissues, foreign bodies, or abscess drainage may be necessary in localized infections. Monitor for complications: Especially in infants, Paenibacillus can cause severe complications like meningitis and hydrocephalus, requiring close monitoring and sometimes neurosurgical intervention. thelancet+2 Follow-up and continuity of care: Persistent infections require long-term medical follow-up and sometimes prolonged antibiotic administration. pmc.ncbi.nlm.nih+1 Current Knowledge of Human Infections Systematic reviews and case series demonstrate that although Paenibacillus species are uncommon human pathogens, the number of species associated with clinical infections is growing. Infection presentations differ notably between adults and infants: Adults: Infections are sporadic, caused by a wide array of species, often present as wound infections, abscesses, or localized sepsis. Central nervous system involvement is rare, and most cases resolve with treatment. pubmed.ncbi.nlm.nih+2 Infants: Neonatal infections are far more severe, especially with P. thiaminolyticus, and often present as sepsis or meningitis with a high risk of cerebral destruction and hydrocephalus. Mortality rates are notable, and survivors often need surgical intervention for neurological sequelae. pmc.ncbi.nlm.nih+3 The overall frequency of infection remains low relative to the ubiquity of the genus, indicating that most isolates are contaminants, but vigilance is still warranted for at-risk populations. Recommended Crops: Cereals, Millets, Pulses, Oilseeds, Fibre Crops, Sugar Crops, Forage Crops, Plantation crops, Vegetables, Fruits, Spices, Flowers, Medicinal crops, Aromatic Crops, Orchards, and Ornamentals. Compatibility: Compatible with Bio Pesticides, Bio Fertilizers, and Plant growth hormones but not with chemical fertilizers and chemical pesticides. Shelf Life: Stable within 1 year from the date of manufacturing. Packing: We offer tailor-made packaging as per customers' requirements. Dosage & Application Seed Coating/Seed Treatment: Coat 1 kg of seeds with a slurry mixture of 10 g of Paenibacillus Azotofixans and 10 g of crude sugar in sufficient water. Dry the coated seeds in shade before sowing or broadcasting in the field. Seedling Treatment: Dip seedlings into a mixture of 100 grams of Paenibacillus Azotofixans with sufficient water. Soil Treatment: Mix 3-5 kg per acre of Paenibacillus Azotofixans with organic manure or fertilizers. Incorporate into the soil during planting or sowing. Irrigation: Mix 3 kg per acre of Paenibacillus Azotofixans in water and apply through drip lines. FAQ What is the significance of Paenibacillus as a potential laboratory contaminant? Answer: Paenibacillus species are among the most frequently isolated laboratory contaminants, especially in low-biomass and sterile sample environments. Their spores persist in air, on surfaces, and even on personal protective equipment, leading to inadvertent contamination of cultures and clinical specimens. Laboratory contaminants can cause diagnostic confusion, particularly when isolated from blood cultures or sterile sites, given the genus’s environmental prevalence. Recognizing Paenibacillus as a contaminant is vital to prevent misdiagnosis, unnecessary antimicrobial therapy, and misleading research conclusions. Rigorous sample handling and critical assessment of laboratory results are essential in distinguishing contamination from true infection. sciencedirect+4 Can Paenibacillus species exhibit pathogenicity in humans? Answer: Although primarily environmental and plant-associated, certain Paenibacillus species can exhibit pathogenicity in humans, particularly in vulnerable populations such as neonates, immunocompromised individuals, or following trauma. Documented infections include sepsis, wound infection, abscesses, meningitis, endocarditis, ocular infections, and rare systemic disease. Species like P. alvei, P. thiaminolyticus, and P. lautus are increasingly identified as clinical pathogens. In neonates, P. thiaminolyticus is notably associated with severe CNS infections. Virulence factors, antibiotic resistance, and spore persistence contribute to pathogenic potential, although true infections remain rare compared to environmental contamination. wwwnc.cdc+9 What are the recommended clinical approaches for managing Paenibacillus infections? Answer: Management is guided by accurate diagnosis and susceptibility-directed antimicrobial therapy. Clinicians should distinguish true infection from laboratory contamination, correlate culture results with clinical findings, and employ targeted treatment. Empiric therapy can include cefotaxime, ceftriaxone, gentamicin, amikacin, levofloxacin, and rifampicin, but resistance to penicillin, clindamycin, vancomycin, and sulfonamides is not uncommon. Susceptibility testing is imperative prior to finalizing antibiotic choice. Additional interventions such as surgical drainage of infected tissues may be necessary. Neonatal and CNS infections require close multidisciplinary management. Long-term monitoring is advised due to the potential for persistent or recurrent infection and post-infectious complications. pmc.ncbi.nlm.nih+7 What is currently known about human infections caused by Paenibacillus species? Answer: Human Paenibacillus infections, while uncommon, are increasingly recognized in pediatric and adult populations. Infections in adults are sporadic and generally mild, presenting as localized wound infection, abscesses, or sepsis, and most affected individuals recover without severe sequelae. Neonatal infections, especially those due to P. thiaminolyticus, are severe and often complicated by brain injury, hydrocephalus, and require surgical intervention, with notable associated mortality. The rise in documented cases reflects improved detection, growing awareness, and advances in microbiological diagnostics. Nonetheless, the majority of clinical isolates are contaminants rather than true pathogens, highlighting the importance of careful clinical interpretation and management. Ongoing research is elucidating new species, virulence mechanisms, and optimized treatment protocols. sciencedirect+9 Sustainability Advantage Related Products Acetobacter xylinum Azospirillum brasilense Azospirillum lipoferum Azospirillum spp. Azotobacter vinelandii Beijerinckia indica Bradyrhizobium elkanii Bradyrhizobium japonicum More Products Resources Read all

Beauveria bassiana is a beneficial entomopathogenic fungus used as a biological insecticide to effectively control termites, thrips, whiteflies, aphids, beetles, and other pests. Its spores attach to the insect’s exoskeleton, penetrate the body, and proliferate, ultimately leading to pest mortality while preventing resistance development. This eco-friendly alternative to chemical pesticides provides long-lasting, broad-spectrum pest control and integrates seamlessly into integrated pest management (IPM) programs. Safe for beneficial insects and pollinators, Beauveria bassiana is applied via foliar sprays, soil drenches, and termite baiting, offering sustainable protection in agriculture, greenhouses, and urban pest management < Microbial Species Beauveria bassiana Beauveria bassiana is a beneficial entomopathogenic fungus used as a biological insecticide to effectively control termites, thrips, whiteflies, aphids, beetles, and other pests. Its spores attach to the insect’s exoskeleton, penetrate the body, and proliferate, ultimately leading to pest mortality while preventing resistance development. This eco-friendly alternative to chemical pesticides provides long-lasting, broad-spectrum pest control and integrates seamlessly into integrated pest management (IPM) programs. Safe for beneficial insects and pollinators, Beauveria bassiana is applied via foliar sprays, soil drenches, and termite baiting, offering sustainable protection in agriculture, greenhouses, and urban pest management Strength 1 x 10⁸ CFU per gram / 1 x 10⁹ CFU per gram Product Enquiry Buy this species Download Brochure Benefits Environmentally friendly Beauveria bassiana is safe for the environment, biodegradable, and leaves no harmful residues. Effective mode of action Infects insects through their cuticles, colonizing and killing them from within. Long-term efficacy Provides sustainable pest control without inducing pest resistance over time. High specificity Targets a wide range of pests like termites, thrips, and aphids while sparing beneficial insects. Dosage & Application Additional Info Scientific References Mode of Action Sustainability Advantage FAQ Scientific References Beauveria bassiana has been extensively studied with over 500 published research papers demonstrating its efficacy against diverse insect pests, with notable studies in Journal of Invertebrate Pathology, Biocontrol Science and Technology, and Applied Entomology documenting mortality rates of 80-100% against target species. EPA safety evaluations confirm minimal toxicity to mammals with complete clearance from test animals within 7 days, supporting its registration as a safe biological pesticide. Recent genomic and proteomic research has identified key virulence genes and toxin production mechanisms, advancing strain optimization and formulation improvements for enhanced field efficacy. informaticsjournals+4 Mode of Action Spore Attachment and Penetration : Fungal conidia attach to insect cuticle and produce specialized enzymes (chitinases, proteases, lipases) that degrade the exoskeleton, with appressoria structures providing mechanical pressure for cuticle penetration. www.indogulfbioag.com Biological Pest Control Using Beauveria bassiana: A Natural Solution for Crop Protection in Agriculture Beauveria bassiana is a natural biocontrol agent reducing chemical pesticide use, offering sustainable pest management in agriculture. Internal Colonization : Once inside the hemolymph, fungus produces specialized blastospores that exploit nutrient-rich environment while releasing secondary metabolites including beauvericin, bassianolide, tenellin, and oosporein that disrupt insect physiological processes. www.indogulfbioag.com Biological Pest Control Using Beauveria bassiana: A Natural Solution for Crop Protection in Agriculture Beauveria bassiana is a natural biocontrol agent reducing chemical pesticide use, offering sustainable pest management in agriculture. Host Death and Sporulation : Insect mortality occurs through nutrient depletion and toxin accumulation within 3-14 days, followed by hyphal emergence from cadaver and sporulation for environmental spore dispersal, enabling horizontal transfer to other pest individuals. pmc.ncbi.nlm.nih.gov The Toxins of Beauveria bassiana and the Strategies to Improve Their Virulence to Insects The long-term and excessive usage of pesticides is an enormous burden on the environment, which also increases pest resistance. To overcome this problem, research and application of entomopathogenic fungi, which are both environmentally friendly and ... Additional Info IndoGulf BioAg: Leading Manufacturer and Exporter of Beauveria bassiana IndoGulf BioAg is a premier manufacturer and exporter of Beauveria bassiana , an entomopathogenic fungus widely recognized for its effectiveness as a biological insecticide. Our specially formulated Beauveria bassiana products provide an eco-friendly and sustainable alternative to chemical pesticides, ensuring effective pest control across various agricultural systems. Target Pests Our Beauveria bassiana formulations effectively combat a wide range of insect pests, including: Termites Thrips Whiteflies Aphids Rice Leaf Folder Helicoverpa armigera Spodoptera litura Loopers Bunch Caterpillars Leaf-Eating Caterpillars Mealy Bugs Coffee Berry Borers Fruit Borers (Brinjal, Tomato, Chili, and Vegetables) Cotton Bollworm Root Grubs Surface-Living Larvae and Nymphs These pests can cause severe damage to a variety of crops, and our Beauveria bassiana solutions offer an effective method of controlling their populations while promoting environmental sustainability. Recommended Crops Our Beauveria bassiana products are suitable for use on a diverse range of crops, including: Cereals and Millets Pulses Oilseeds Fiber Crops Sugar Crops Forage Crops Plantation Crops Vegetables Fruits Spices Flowers Medicinal and Aromatic Crops Orchards Ornamentals This broad-spectrum applicability supports integrated pest management strategies across various farming practices. Compatibility Our Beauveria bassiana formulations are compatible with several agricultural inputs, including: Bio-Pesticides Bio-Fertilizers Plant Growth Hormones However, they are not compatible with chemical fertilizers and chemical pesticides , as these can adversely impact the viability and effectiveness of the fungal spores. Enhanced Stability Solutions We offer advanced stabilization techniques to improve product shelf life and performance: Multilayered Encapsulation Techniques – Enhances stability but may result in increased pricing. Incorporation of Antioxidants & Oxygen Removers – Further extends shelf life and potency. Extended Shelf Life – Under optimal conditions (5°C to 25°C), all our Beauveria bassiana species remain stable for up to 18 months post-manufacturing. Packaging Options We provide customizable packaging solutions to cater to specific customer needs, ensuring convenience and suitability for various application requirements. Why Choose IndoGulf BioAg? Eco-Friendly Alternative – Reduces reliance on chemical pesticides. Sustainable Agriculture – Promotes biodiversity and minimizes chemical residues. Broad Pest Control Spectrum – Targets a wide variety of insect pests. Versatile Applications – Suitable for multiple crops and farming systems. Dosage & Application Wettable Powder: 1 x 10⁸ CFU per gram Foliar Application : 1 Acre dose: 2 kg 1 Ha dose: 5 kg Soil Application (Soil drench or Drip irrigation) : 1 Acre dose: 2-5 kg 1 Ha dose: 5-12.5 kg Soil Application (Soil drench or Drip irrigation) for Long Duration Crops / Orchards / Perennials : 1 Acre dose: 2-5 kg 1 Ha dose: 5-12.5 kg Apply 2 times a year: before onset of monsoon and after monsoon Foliar Application for Long Duration Crops / Orchards / Perennials : 1 Acre dose: 2 kg 1 Ha dose: 5 kg Apply 2 times a year: before onset of monsoon and after monsoon Soluble Powder: 1 x 10⁹ CFU per gram Foliar Application : 1 Acre dose: 200 g 1 Ha dose: 500 g Soil Application (Soil drench or Drip irrigation) : 1 Acre dose: 200-500 g 1 Ha dose: 500 g - 1.25 kg Soil Application (Soil drench or Drip irrigation) for Long Duration Crops / Orchards / Perennials : 1 Acre dose: 200-500 g 1 Ha dose: 500 g - 1.25 kg Apply 2 times a year: before onset of monsoon and after monsoon Foliar Application for Long Duration Crops / Orchards / Perennials : 1 Acre dose: 200 g 1 Ha dose: 500 g Apply 2 times a year: before onset of monsoon and after monsoon Application Methods Soil Application Method : Mix Beauveria Bassiana at recommended doses with compost and apply at early life stages of crop along with other biofertilizers. Mix Beauveria Bassiana at recommended doses in sufficient water and drench soil at early insect emergence stage. Drip Irrigation : If there are insoluble particles, filter the solution and add to drip tank. Long Duration Crops / Perennial / Orchard Crops : Dissolve Beauveria Bassiana at recommended doses in sufficient water and apply as a drenching spray near the root zone during the off-season, twice a year. It is recommended to have the first application before the onset of the main monsoon/rainfall/spring season and the second application after the main monsoon/rainfall/autumn/fall season. Foliar Application Method : Mix Beauveria Bassiana at recommended doses in sufficient water and spray on soil during the off-season. Apply twice a year for long-duration crops. It is recommended to have the first application before the onset of the main monsoon/rainfall/spring season and the second application after the main monsoon/rainfall/autumn/fall season. Note : Do not store Beauveria Bassiana solution for more than 24 hours after mixing in water. FAQ What is Beauveria bassiana used for? Beauveria bassiana is used as a biological insecticide for controlling over 200 insect pest species including aphids, whiteflies, thrips, caterpillars, beetles, termites, and soil grubs across cereals, vegetables, fruits, and ornamental crops, providing eco-friendly pest management in integrated pest management systems. View more in details . What disease is caused by Beauveria bassiana? Beauveria bassiana does not cause disease in plants. Instead, it causes mycosis (fungal infection) in target insect pests. The fungus penetrates the insect cuticle and proliferates within the hemolymph, producing secondary metabolites (beauvericin, bassianolide, tenellin, and oosporein) that disrupt insect physiological processes, leading to insect death within 3-14 days. This pathogenic effect is species-specific to insects and poses no threat to plant health. What does Beauveria bassiana kill? Beauveria bassiana effectively targets a broad spectrum of insect pests, including: Aphids, Rice Leaf Folder, Helicoverpa armigera, Spodoptera litura, Loopers, Bunch Caterpillars, Leaf-Eating Caterpillars, Mealy Bugs, Coffee Berry Borers, Fruit Borers (Brinjal, Tomato, Chili, and Vegetables), Cotton Bollworm, Root Grubs, Surface-Living Larvae and Nymphs, Termites, Thrips, Whiteflies, and Beetles. Research demonstrates mortality rates of 80-100% against target species under field conditions. View more in details here: what does Beauveria bassiana kill ? When to apply Beauveria bassiana? Timing depends on crop type: Annual Crops : Apply at early insect emergence stage or during peak pest activity Long Duration Crops / Perennials / Orchards : Apply twice yearly - before the onset of monsoon/rainfall/spring season and after the main monsoon/rainfall/autumn/fall season Preventive Applications : Mix with compost and apply at early life stages of the crop Optimal Conditions : Apply in cool, humid conditions (early morning or late evening) for best spore viability and adhesion to target pests View more in details about when to apply Beauveria Bassiana ? How to use Beauveria bassiana for plants? Beauveria bassiana can be applied using multiple methods: Foliar Application (Spray on leaves): Wettable Powder (1×10⁸ CFU/g): Mix 2 kg per acre (5 kg/ha) in sufficient water Soluble Powder (1×10⁹ CFU/g): Mix 200 g per acre (500 g/ha) in sufficient water Spray thoroughly to ensure coverage of affected foliage Do not store solution for more than 24 hours after mixing Soil Application (Drench): Wettable Powder: 2-5 kg per acre (5-12.5 kg/ha) Soluble Powder: 200-500 g per acre (500 g-1.25 kg/ha) Mix with sufficient water and drench soil at early insect emergence stage For long-duration crops, apply near the root zone during off-season Drip Irrigation: Filter the solution if there are insoluble particles Add to drip tank at recommended doses Ensures uniform distribution and soil colonization Compatibility Tip: Beauveria bassiana is compatible with bio-pesticides, bio-fertilizers, and plant growth hormones but NOT compatible with chemical fertilizers and chemical pesticides. View more info: How to use Beauveria bassiana for plants ? Can Beauveria bassiana infect humans? Beauveria bassiana poses minimal risk to humans with EPA toxicity studies showing no pathogenicity in mammals, though rare opportunistic infections in severely immunocompromised patients have been reported; manufacturing personnel surveillance since 2008 shows no infectivity or sensitization effects, making it safe for agricultural workers when proper protective equipment is used. Get detailled information about Can Beauveria bassiana infect humans . Is Beauveria bassiana safe for bees? Research indicates Beauveria bassiana has minimal impact on honey bees with mortality rates considered negligible in field studies, though some sublethal effects including altered cuticular profiles and moderate brood mortality have been observed at high exposure levels; it can be applied to non-bee attractive plants without significant colony risks. Is Beauveria bassiana effective against bed bugs? Beauveria bassiana demonstrates high efficacy against bed bugs with commercial formulations like Aprehend achieving 80-100% mortality within 7-14 days, effectively penetrating pyrethroid-resistant populations through contact exposure, with horizontal transfer capabilities spreading infection throughout bed bug aggregations for enhanced population control. How to apply Beauveria bassiana? Apply spores directly to crops using spraying methods. Ensure even coverage on foliage for effective pest control. What is Beauveria bassiana used for? It is used as a biological insecticide to control termites, thrips, whiteflies, aphids, beetles, and other pests. How long does Beauveria bassiana take to work? It typically kills insects within 3–14 days after infection, depending on pest and environmental conditions. Can Beauveria bassiana be used indoors? Yes, it can be applied indoors in controlled environments for pest management. What insects does Beauveria bassiana target? It targets termites, thrips, aphids, whiteflies, beetles, and other similar insect pests. What are commercial applications of Beauveria bassiana? Used in agriculture for eco-friendly pest control, reducing chemical pesticide usage and supporting sustainable farming. View more in details . What are the benefits of Beauveria bassiana? Environmentally friendly, biodegradable, specific to pests, effective long-term, and safe for humans and beneficial insects. Get more information about major benefits of Beauveria bassiana . How to use Beauveria bassiana for insect management? Spores attach to insect cuticles, penetrate, colonize internally, release toxins, and eventually kill the pest. What are the role of Beauveria bassiana in integrated pest management? It provides targeted, sustainable pest control, reducing chemical pesticide reliance and supporting IPM programs. Visit here to know about its biological pest control . Sustainability Advantage Related Products Hirsutella thompsonii Isaria fumosorosea Lecanicillium lecanii Metarhizium anisopliae Nomuraea rileyi More Products Resources Read all

Lactobacillus reuteri promotes digestive health, supports immune function, and may reduce colic in infants, improving overall comfort. < Microbial Species Lactobacillus reuteri Lactobacillus reuteri promotes digestive health, supports immune function, and may reduce colic in infants, improving overall comfort. Strength 1 x 10⁸ CFU per gram / 1 x 10⁹ CFU per gram / 1 x 10¹⁰ CFU per gram Product Enquiry Buy this species Download Brochure Benefits Immune System Support It boosts immune function by increasing the production of antibodies and enhancing the body's defense against pathogens. Digestive Health Enhancement This probiotic supports gut health by promoting a balanced microbiota and alleviating symptoms of gastrointestinal discomfort. Antimicrobial Properties It produces substances that inhibit the growth of harmful bacteria, contributing to a healthier gut environment. Colic Relief in Infants This strain has been shown to alleviate colic symptoms in infants, promoting better digestive comfort. Dosage & Application Additional Info Scientific References Mode of Action Sustainability Advantage FAQ Scientific References Content coming soon! Mode of Action Content coming soon! Additional Info Key Features All microbial strains are characterized using 16S rDNA. All products are non-GMO. No animal-derived materials are used. The typical shelf life is 2 years. All strains are screened in-house using high-throughput screening methods. We can customize manufacturing based on the required strength and dosage. High-resilience strains Stable under a wide pH range Stable under a broad temperature range Stable in the presence of bile salts and acids Do not show antibiotic resistance Packaging Material The product is packaged in a multi-layer, ultra-high barrier foil that is heat-sealed and placed inside a cardboard shipper or plastic drum. Shipping Shipping is available worldwide. Probiotic packages are typically transported in insulated Styrofoam shippers with dry ice to avoid exposure to extreme high temperatures during transit. Support Documentation Certificate of Analysis (COA) Specifications Material Safety Data Sheets (MSDS) Stability studies (18 months) Certifications ISO 9001 ISO 22000 HACCP Halal and Kosher Certification (for Lactobacillus strains) FSSAI Dosage & Application Contact us for more details FAQ Content coming soon! Sustainability Advantage Related Products Bifidobacterium animalis Bifidobacterium bifidum Bifidobacterium breve Bifidobacterium infantis Bifidobacterium longum Clostridium butyricum Lactobacillus acidophilus Lactobacillus bulgaricus More Products Resources Read all

As a versatile free-living diazotroph, Beijerinckia indica can sustainably supplement up to 40% of nitrogen fertilizer requirements, improve soil health, and enhance crop resilience across diverse agroecosystems. < Microbial Species Beijerinckia indica As a versatile free-living diazotroph, Beijerinckia indica can sustainably supplement up to 40% of nitrogen fertilizer requirements, improve soil health, and enhance crop resilience across diverse agroecosystems. Strength 1 x 10⁸ CFU per gram / 1 x 10⁹ CFU per gram / 1 x 10¹⁰ CFU per gram Product Enquiry Buy this species Download Brochure Benefits Plant Growth Promotion It produces growth-promoting substances like phytohormones and siderophores, which stimulate plant growth, nutrient uptake, and overall health. Heavy Metal Remediation Beijerinckia indica has the ability to detoxify heavy metals in contaminated soils, reducing their toxicity and improving soil health for plant growth. Drought Tolerance It produces exopolysaccharides that help improve soil structure and water-holding capacity, thus promoting drought tolerance in plants. Nitrogen Fixation Beijerinckia indica fixes atmospheric nitrogen into ammonia, contributing to soil fertility and enhancing plant growth without the need for nitrogen fertilizers. Dosage & Application Additional Info Scientific References Mode of Action Sustainability Advantage FAQ Scientific References Case Studies and Trials Ultisol Sugarcane, India: Biomass N uptake matched 120 kg N/ha synthetic regimen; soil N increased by 15 kg N/ha post-harvest. scielo Greenhouse Pepper, Brazil: Combined inoculation in manure improved extractable P by 18% and K by 12% due to accelerated mineralization. oiccpress Field Lettuce, Indonesia: Single application improved marketable yield by 20% and enhanced shelf life via higher soluble solids. Integration into Crop Management Incorporate B. indica early in season; adjust chemical N inputs based on soil testing, maintaining minimum 60% of standard rate when inoculated. Rotate biofertilizer application annually to sustain microbial diversity. Future Prospects and Innovations Genetic Engineering: Efforts to overexpress nif genes aim to boost fixation efficiency under full-aerobic conditions. Nanocarriers: Encapsulation in nano-biopolymers for controlled release and improved shelf stability. Consortia Development: Blends with mycorrhizal fungi and phosphate-solubilizing bacteria for multi-nutrient biofertilizers. Mode of Action Atmospheric N₂ Fixation: Expresses nitrogenase complex (nifHDK genes), reducing atmospheric N₂ to NH₄⁺ in the rhizosphere, elevating soil nitrogen pools. Phytohormone Production: Synthesizes indole-3-acetic acid (IAA) at 10–20 µg/mL, stimulating lateral root initiation and root hair elongation for improved nutrient uptake. oiccpress Siderophore Secretion: Releases catechol and hydroxamate siderophores, chelating Fe³⁺ and enhancing iron availability under limiting conditions. Synergistic Interactions: Co-inoculation with fungi (e.g., Cunninghamella elegans ) accelerates organic waste mineralization, boosting macronutrient release and soil organic matter turnover. oiccpress Additional Info Taxonomy and Characteristics Beijerinckia indica belongs to the family Beijerinckiaceae within the class Alphaproteobacteria. It presents as Gram-negative, rod-shaped cells (0.8–1.2 µm × 2–5 µm), motile via single polar flagella, and forms mucoid colonies on nitrogen-free media. Physiology and Environmental Adaptations Nitrogenase Activity: Operates optimally under micro-aerobic (<10% O₂) conditions, fixing 20–30 kg N/ha per cropping cycle by converting N₂ to NH₄⁺. jurnal.unipar+1 pH Tolerance: Maintains activity from pH 3.0 to 8.0, with acid-stable nitrogenase variants performing down to pH 3.0 in acidic soils. pmc.ncbi.nlm.nih Carbon Utilization: Utilizes C₁ compounds (e.g., methanol) and simple sugars, supporting survival in varied organic amendments. Stress Resistance: Produces compatible solutes (e.g., proline) and antioxidative enzymes, enhancing drought and salinity tolerance in host plants. Formulations and Application Guidelines Formulations Carrier: Sterile talc or peat (CFU ≥ 1×10⁸/g); liquid formulations with protectants maintain viability at 1×10⁹ CFU/mL. Co-formulations: Compatible with other biofertilizers (e.g., Azospirillum, Rhizobium); avoid broad-spectrum fungicides. Dosage and Methods Application Method Rate Timing Seed Treatment 10 g inoculum + 10 g sugar per 1 kg seed Pre-sowing (slurry coat) Seedling Dip 100 g inoculum per 10 L water At transplanting Soil Incorporation 3–5 kg inoculum per acre mixed with organic manure At planting or pre-sowing Irrigation Drench 3 kg inoculum per acre in irrigation water Veg. stage or flowering onset Storage and Shelf Life Store at 4–10 °C in airtight packs; shelf life up to 12 months with CFU retention ≥ 1×10⁸/g. Protect from UV exposure and moisture. Recommended Crops Cereals, Millets, Pulses, Oilseeds, Fibre Crops, Sugar Crops, Forage Crops, Plantation crops, Vegetables, Fruits, Spices, Flowers, Medicinal crops, Aromatic Crops, Orchards, and Ornamentals. Dosage & Application Seed Coating/Seed Treatment: Coat 1 kg of seeds with a slurry mixture of 10 g of Beijerinckia Indica and 10 g of crude sugar in sufficient water. Dry the coated seeds in shade before sowing or broadcasting in the field. Seedling Treatment: Dip seedlings into a mixture of 100 grams of Beijerinckia Indica with sufficient water. Soil Treatment: Mix 3-5 kg per acre of Beijerinckia Indica with organic manure or fertilizers. Incorporate into the soil during planting or sowing. Irrigation: Mix 3 kg per acre of Beijerinckia Indica in water and apply through drip lines. FAQ Which crops see greatest response? Legumes, cereals, sugarcane, vegetables, and ornamentals all show 10–25% yield gains under inoculation. How soon after application are effects measurable? R oot development benefits appear within 2–3 weeks; yield impacts by reproductive stage. Is co-application with chemical fertilizers possible? Yes—apply B. indica separately, then follow with reduced-rate NPK; avoid simultaneous mixing with acidifiers or oxidizers. What regulatory approvals exist? Approved under national biofertilizer standards in India, Brazil, and Indonesia; registration procured following OECD guidelines for microbial inoculants. Sustainability Advantage Related Products Acetobacter xylinum Azospirillum brasilense Azospirillum lipoferum Azospirillum spp. Azotobacter vinelandii Bradyrhizobium elkanii Bradyrhizobium japonicum Gluconacetobacter diazotrophicus More Products Resources Read all

Bradyrhizobium elkanii a bacterium that forms symbiotic relationships with legume roots, significantly improving nitrogen availability in the soil, which is essential for leguminous crop production. < Microbial Species Bradyrhizobium elkanii Bradyrhizobium elkanii a bacterium that forms symbiotic relationships with legume roots, significantly improving nitrogen availability in the soil, which is essential for leguminous crop production. Strength 1 x 10⁸ CFU per gram / 1 x 10⁹ CFU per gram / 1 x 10¹⁰ CFU per gram Product Enquiry Buy this species Download Brochure Benefits Nitrogen Fixation Bradyrhizobium elkanii forms symbiotic relationships with leguminous plants, fixing atmospheric nitrogen into ammonia, which enhances soil fertility and plant growth. Enhanced Nutrient Availability It enhances the availability of essential nutrients such as phosphorus and iron to the host plant, contributing to improved plant health and yield. Stress Tolerance Bradyrhizobium elkanii produces stress-protective compounds like exopolysaccharides, aiding plants in coping with environmental stresses such as drought and salinity. Biocontrol Agent It competes with pathogenic microorganisms in the rhizosphere, helping to suppress plant diseases and promote healthier plant growth. Dosage & Application Additional Info Scientific References Mode of Action Sustainability Advantage FAQ Scientific References Scientific References and Molecular Mechanisms of Symbiosis (2025 Update) Overview of Bradyrhizobium elkanii Symbiotic Signaling The establishment of B. elkanii-legume symbiosis is a sophisticated molecular dialogue involving plant-derived signals (flavonoids), bacterial Nod factors (NFs), Type III secretion system (T3SS) effectors, and host-encoded resistance proteins. This intricate regulatory network determines host specificity, nodule organogenesis, and nitrogen fixation efficiency. 1. Molecular Signaling Initiation Flavonoid-Mediated Activation Host-to-Bacterium Signal:Legume roots experiencing nitrogen starvation exude flavonoid compounds (e.g., genistein, daidzein, luteolin) into the rhizosphere. These flavonoids penetrate the B. elkanii cell membrane and bind to the NodD regulatory protein, a member of the LysR family of transcriptional regulators. Key Research Findings: Flavonoid concentrations as low as 10⁻⁸ M activate nod gene expression in B. elkanii Different legume species exude distinct flavonoid profiles, contributing to host specificity Transcription of the nodYABCSUIJnolMNOnodZ operon is directly dependent upon NodD-flavonoid complexes TtsI (transcriptional activator of T3SS) is also responsive to flavonoids and coordinates both Nod factor and T3SS expression Regulatory Architecture The B. elkanii regulatory circuit involves: NodD: LysR-type regulator controlling nod gene expression NodW: Regulatory protein modulating flavonoid recognition TtsI: Transcriptional regulator of T3SS genes, activated by plant flavonoids Coordination of these regulators ensures spatiotemporal expression of symbiotic genes 2. Nod Factor Biosynthesis and Host Recognition Structure and Function Nod Factors (NFs):Nod factors are lipochitooligosaccharides (LCOs) comprising a backbone of 3–5 N-acetyl-D-glucosamine (GlcNAc) units with a long-chain fatty acyl group (C16–C18) attached to the non-reducing terminus. Nod Gene Clusters in B. elkanii: nodA: Encodes N-acetyl transferase; transfers the acyl chain to the GlcNAc backbone nodB: N-acetyl lyase; removes N-acetyl group from the non-reducing terminus nodC: Chitin synthase; synthesizes the GlcNAc backbone nodS, nodU, nodI, nodJ: Involved in modification and transport of Nod factors nodZ: Encodes a glucosidase involved in Nod factor modification for B. elkanii-specific legume recognition Nod Factor Modification B. elkanii produces modified Nod factors unique to this species: Acetyl substitution patterns differ between strains Host-specific decorations on the oligosaccharide backbone determine compatibility with legume receptors (NFRs: Nod Factor Receptors) Molecular recognition is highly specific; B. elkanii NF structure triggers nodulation in soybean (Glycine max), but not in hosts compatible with other rhizobia Structural Variations and Host Specificity B. elkanii genomes harbor extensive nodulation gene repertoires: Multiple nod gene variants on symbiotic islands allow synthesis of a spectrum of Nod factor structures Comparative genomic analysis reveals gene duplications and deletions affecting Nod factor decoration These variations contribute to the competitive nodulation phenotype of B. elkanii and its ability to nodulate multiple legume hosts at variable efficiency 3. Type III Secretion System (T3SS) and Effector Proteins T3SS Architecture The T3SS is a molecular syringe-like apparatus embedded in the bacterial cell envelope that delivers effector proteins (Nops: nodulation outer proteins) directly into host plant cells. T3SS Components in B. elkanii: RhcJ: Outer membrane channel protein RhcV: Inner membrane channel protein RhcQ: ATPase providing energy for protein secretion RhcC, RhcD, RhcE, RhcF: Basal body proteins FlhA, FliK, FliP: Apparatus assembly proteins Transcriptional Control: T3SS gene expression is controlled by TtsI (transcriptional activator) TtsI is activated by plant flavonoids, creating a coordinated response with Nod factor synthesis The T3SS is activated only in the presence of compatible plant roots, preventing wasteful energy expenditure in the soil T3SS Effector Proteins and Functions NopL: Key Determinant for Nodule Organogenesis Function: NopL is among the most critical T3SS effectors, particularly for B. elkanii USDA61 symbiosis with certain legume species (e.g., Vigna mungo). NopL-deleted mutants form infection threads on Vigna mungo roots but fail to establish nodules, indicating its essential role in nodule primordia formation NopL is exclusively conserved among Bradyrhizobium and Sinorhizobium genera, suggesting ancient evolutionary origin Phylogenetic analysis indicates NopL diverged from the canonical T3SS lineage, suggesting specialized symbiotic function Mechanism: NopL enters host cell nuclei and likely interacts with plant transcription factors Suppresses host immune responses that would otherwise block infection Triggers expression of early nodulation genes required for meristem initiation Bel2-5: NF-Independent Nodulation Effector Dual Functions: In some legumes (e.g., soybean nfr1 mutants), Bel2-5 can trigger nodulation independently of Nod factors In soybean carrying the Rj4 allele (dominant resistance gene), Bel2-5 acts as a virulence factor, triggering immune responses that prevent infection Structural Features: Contains ubiquitin-like protease (ULP) domain Two EAR (ethylene-responsive element-binding factor-associated amphiphilic repression) motifs for transcriptional regulation Nuclear localization signal (NLS) enabling entry into plant cell nuclei Internal repeat sequences with unknown function Shares structural similarity with XopD from the plant pathogen Xanthomonas campestris pv. vesicatoria Domain-Function Correlation: The C-terminal ULP domain and upstream regions are critical for Bel2-5-dependent nodulation phenotypes Mutations in EAR motifs abolish nodulation ability Deletion of NLS impairs nuclear targeting and symbiotic function InnB: Strain-Specific Symbiotic Modulator Host-Specific Effects: InnB promotes nodulation on Vigna mungo cultivars InnB restricts nodulation on Vigna radiata cv. KPS1 This differential phenotype reflects distinct recognition mechanisms in different legume species Expression and Localization: innB expression is flavonoid-dependent and TtsI-regulated InnB protein is secreted via T3SS and translocated into host cells Adenylate cyclase assays confirm T3SS-dependent translocation into nodule cells NopM: Ubiquitin Ligase Triggering Senescence Function: NopM triggers early senescence-like responses in incompatible hosts (e.g., Lotus species). Possesses E3 ubiquitin ligase domain and leucine-rich-repeat domain Acts similarly to PAMP-triggered immunity (PTI) and effector-triggered immunity (ETI) in pathogenic bacteria Mediates ubiquitination of host target proteins, leading to degradation and immune responses Results in browning of nodules and disrupted symbiosis Phylogenetic Conservation: NopM homologs are found in both pathogenic and symbiotic bacteria, highlighting the evolutionary relatedness of virulence and symbiotic mechanisms NopF: Infection Thread Inhibitor Role in Host Specificity: NopF triggers inhibition of infection thread formation in Lotus japonicus Gifu Represents a post-recognition checkpoint for host-pathogen compatibility Allows alternative legume accessions (L. burttii, L. japonicum MG-20) to proceed with symbiosis, despite presence of NopF NopP2: Fine-Tuning Symbiotic Efficiency Function: NopP2 fine-tunes symbiotic effectiveness with Vigna radiata. Located within the symbiotic island near the nif cluster Differential effects depending on host genotype and strain background Contributes to variable nodulation phenotypes among B. elkanii strains 4. Host Specificity and Rj Gene-Mediated Resistance The Rj Gene System in Soybean Soybean (Glycine max) possesses a dominant host resistance system controlled by Rj (Rejection) genes that restrict nodulation by specific Bradyrhizobium strains. Rj4 Gene: Encodes a thaumatin-like protein (TLP), a member of the pathogenesis-related (PR-5) protein family Structurally similar to plant anti-fungal proteins Restricts nodulation by many B. elkanii strains, particularly Type B strains (e.g., USDA61) Soybean cultivars carrying Rj4 are incompatible with B. elkanii but compatible with Bradyrhizobium diazoefficiens USDA110 Rj2 Gene: Encodes a TIR-NBS-LRR protein (Toll-interleukin receptor/nucleotide-binding site/leucine-rich repeat) Represents a receptor-like immune protein structurally similar to plant R proteins for pathogen resistance Critical amino acid I490 (isoleucine) in Rj2 determines incompatibility with Bradyrhizobium diazoefficiens USDA122 Restricts specific rhizobial strains but allows infection by compatible strains Rj3 Gene: Restricts B. elkanii Type B strains (e.g., BLY3-8, BLY6-1, USDA33) despite allowing nodulation by B. japonicum USDA110 T3SS and its effectors are critical for Rj3-mediated incompatibility Mutations in T3SS components (TtsI, RhcJ) overcome Rj3 restriction, confirming T3SS involvement Gene-for-Gene Model of Symbiotic Specificity The B. elkanii-soybean system exemplifies a gene-for-gene interaction: Bacterial avirulence gene (avr): T3SS effector genes (e.g., nopL, bel2-5, nopM) function as avirulence determinants Plant resistance gene (R): Soybean Rj genes encode receptors recognizing effector-triggered immune responses Incompatibility occurs when bacterial effector matches soybean R gene recognition specificity Compatibility requires bacterial effectors that evade or suppress Rj-mediated immunity 5. Infection and Nodule Development Infection Thread Formation Stages: Pre-infection: Nod factors bind to NFR1/NFR5 receptors on legume root epidermis, activating early symbiotic signaling Infection initiation: B. elkanii invades through root hair curling (Nod factor-dependent) or via crack entry (T3SS-dependent in certain genotypes) Intercellular infection: Bacteria travel through infection threads (wall-bound tubular structures) into the cortex Release and bacteroid formation: Bacteria are released into cortical cells and enclosed within plant-derived peribacteroid membranes Role of T3SS in Infection Nod factor-independent nodulation: B. elkanii T3SS effectors (particularly Bel2-5) can trigger nodulation of soybean nfr1 mutants lacking functional Nod factor receptors Infection thread progression: T3SS suppresses plant defense responses (ROS production, ethylene synthesis) that normally block infection thread elongation Bacterial release: T3SS effectors facilitate bacterial transition from infection threads into cortical cells for bacteroid development Nodule Organogenesis and Development Transcriptional Reprogramming: B. elkanii T3SS effectors and Nod factors activate soybean early nodulation genes: ENOD40, ENOD93, NIN (Nodule Inception), NSP1, NSP2 These plant genes activate meristem-like programs in cortical cells, initiating nodule primordia Coordinated T3E activity (NopL, Bel2-5, NopP2) is essential for primordia formation Nodule Maturation: Infected cells undergo endoreduplication (multiple rounds of DNA replication without cell division) Cortical cells expand to accommodate dividing bacterial cells Peribacteroid membranes establish nutrient exchange compartments Gibberellin Role: B. elkanii synthesizes gibberellin precursor (GA₉) via cytochrome P450 monooxygenase Host soybean expresses GA 3-oxidases (GA3ox) within nodules, converting GA₉ to bioactive GA₄ GA₄ regulates nodule size, influences meristem bifurcation, and modulates senescence Higher GA levels correlate with increased nodule size and bacterial progeny, providing selective advantage to GA-producing strains 6. Nitrogen Fixation Biochemistry Nitrogenase Enzyme Complex Components: Component I (MoFe protein): Contains molybdenum and iron clusters Component II (Fe protein): Contains iron-sulfur cluster; transfers electrons to Component I Electron donors: Bacteroid respiration provides reducing power; organic acids (malate, α-ketoglutarate) drive electron transport Catalytic Reaction:[ \text{N}_2 + 8 e^- + 16 \text{ATP} \to 2 \text{NH}_3 + \text{H}_2 + 16 \text{ADP} + 16 P_i ] Key Features: Requires strictly anaerobic conditions (oxygen sensitivity) Demands substantial ATP input (~16 molecules ATP per N₂ molecule fixed) B. elkanii bacteroids express oxygen-scavenging mechanisms including leghemoglobin synthesis Oxygen Management in Nodules Oxygen Gradient: Outer nodule layers maintain aerobic respiration for ATP generation Interior nodule zones remain anaerobic for nitrogenase activity B. elkanii respiration consumes oxygen in bacterial layers, maintaining hypoxia in nitrogenase-active compartments Oxygen-Protective Mechanisms: Leghemoglobin (plant-encoded, bacteroid-synthesized iron-containing protein) buffers oxygen at nanomolar levels, preventing nitrogenase inactivation Bacteroid differentiation produces enlarged, polyploid cells with reduced permeability to oxygen Expressed late nodulation proteins (Nols) contribute to oxygen protection Metabolic Integration Carbon-Nitrogen Balance: Host plants provide carbohydrates (photosynthetically-derived organic acids) to bacteroids B. elkanii oxidizes organic acids via citric acid cycle and electron transport chains, generating ATP and reducing equivalents for nitrogenase Efficient strains (e.g., B. elkanii USDA76) show higher enzyme levels for Nod factor synthesis and metabolic integration Ammonia Utilization: Ammonia fixed by nitrogenase is rapidly assimilated via glutamine synthetase (GS) in bacteroids However, much ammonia is excreted to host cells, where plants incorporate it into amino acids (glutamine, aspartate) Plant cells return nitrogen to bacteroids as amino acids and organic compounds, establishing exchange equilibrium 7. Regulatory Networks and Gene Expression NifA-RpoN Regulatory Circuit NifA: Sigma-54-dependent transcriptional activator controlling expression of nitrogen fixation (nif) and related genes Activates nifHDK genes encoding nitrogenase structural proteins Responsive to oxygen levels; activated under microoxic conditions characteristic of nodule interiors Coordinates temporal expression of nif genes with nodule development progression RpoN: Sigma-54 RNA polymerase recognizing NifA-bound promoters Directs transcription from nif promoters bearing NifA-binding sites Links nitrogen fixation gene expression to nodule maturation stage GlnR Regulatory Protein Function: Controls nitrogen assimilation genes and cross-talks with symbiotic signaling Represses genes for nitrogen scavenging (e.g., ABC transporters) when ammonia is abundant Releases repression when ammonia becomes limiting, activating alternative nitrogen acquisition pathways Prevents metabolic conflict during high nitrogen fixation rates AdeR (Adenine Deaminase Regulator) Role: Modulates purine metabolism and symbiotic efficiency Controls genes involved in nucleotide synthesis Adjusted expression enables rapid bacterial replication in nodules while supporting biosynthesis of symbiotic proteins 8. Comparative Genomics: Symbiotic Island Architecture Symbiotic Island Composition B. elkanii genomes contain low GC-content regions (symbiotic islands) harboring symbiosis-essential genes: Island A (Main symbiotic island): ~690 kb Contains nod cluster: nodABC, nodD, nodZ, regulatory sequences Contains nif cluster: nifHDK, nifENX, fixABCX Contains fix genes (flavoproteins, cytochromes) for electron transport Island B (Small region): ~4–44 kb Variable across strains; minimal genes Island C: ~200–518 kb Contains additional metabolic and regulatory genes Variable gene content among B. elkanii strains Lateral Gene Transfer and Evolutionary Plasticity Pangenome Analysis: Bradyrhizobium pangenome: 84,078 gene families across species Core genome: 824 genes (essential cell processes) Accessory genome: 42,409 genes (including symbiotic, metabolic, stress response functions) B. elkanii genomes are moderately stable compared to highly plastic genomes of some Sinorhizobium species Genetic Variations: SNPs and indels in symbiotic islands correlate with symbiotic phenotype differences Polymorphisms in nif, fix, and nodulation regulatory genes drive intraspecific variation Integrative conjugative elements (ICEs) facilitate horizontal transfer of symbiotic genes between Bradyrhizobium strains 9. Stress Response and Environmental Adaptation Osmotic Stress Tolerance Mechanisms: Production of exopolysaccharides (EPS) and trehalose Upregulation of osmolyte synthesis under salt stress Maintenance of cell membrane integrity under water deficit Acid-Soil Adaptation pH Tolerance: Many B. elkanii strains tolerate pH 4.5–6.5, though optimal nodulation occurs at pH 6.0–7.5 Expression of acid-tolerance proteins enables survival in acidic soils Selection pressure in Brazilian Cerrado soils (naturally acidic) has generated acid-adapted B. elkanii strains Mode of Action Step-by-Step Nodulation Process Phase 1: Recognition and Signaling (Hours 0–12) Host root exudation of flavonoids B. elkanii perception and chemotaxis toward root Activation of nod gene transcription via NodD-flavonoid interaction Synthesis and secretion of Nod factors Nod factor recognition by plant NFR1/NFR5 receptors Initiation of early nodulation gene expression in plant Phase 2: Infection (Days 1–3) Root hair curling and bacterial microcolony formation Infection thread invasion through root epidermis T3SS-mediated suppression of plant defense responses Intercellular infection thread progression toward cortex Bacterial translocation into cortical cells Phase 3: Nodule Organogenesis (Days 3–7) Induction of cortical cell mitosis (meristem activation) Differentiation of nodule tissues (vascular bundle, infection zone) Bacterial release from infection threads Formation of peribacteroid membranes Nodule structure maturation Phase 4: Bacteroid Differentiation and Nitrogen Fixation (Days 7–21) B. elkanii endoreduplication and morphological differentiation Expression of nitrogenase (nif) and iron-sulfur cluster synthesis genes Establishment of microaerobic environment Initiation of nitrogen fixation Nitrogen transfer to host plant Phase 5: Sustained Symbiosis (Weeks 3–Harvest) Peak nitrogen fixation rates Continuous nitrogen supply to plant Bacterial maintenance and reproduction within nodules Age-dependent nodule senescence in late pod-fill stages Additional Info Recommended Crops: Cereals, Millets, Pulses, Oilseeds, Fibre Crops, Sugar Crops, Forage Crops, Plantation crops, Vegetables, Fruits, Spices, Flowers, Medicinal crops, Aromatic Crops, Orchards, and Ornamentals. Compatibility: Compatible with Bio Pesticides, Bio Fertilizers, and Plant growth hormones but not with chemical fertilizers and chemical pesticides. Shelf Life: Stable within 1 year from the date of manufacturing. Packing: We offer tailor-made packaging as per customers' requirements. Dosage & Application Crop Recommendations and Compatibility Compatible Legumes for B. elkanii Primary Hosts: Soybean (Glycine max) – highest efficiency and most extensively studied Peanut (Arachis hypogaea) – excellent nodulation; SEMIA 6144 strain widely used Mung Bean (Vigna radiata) – strain-dependent compatibility (USDA61 is incompatible with some cultivars) Black-Eyed Pea (Vigna unguiculata) – variable efficiency depending on strain Secondary Hosts (with strain-specific compatibility): Groundnut (Arachis hypogaea) Yard-long Bean (Vigna unguiculata subsp. sesquipedalis) Black Gram (Vigna mungo) – USDA61 strain shows exceptional specificity Broad Host Range (Associated Legumes): Various Vigna species Certain Vicia species Select native legume species Non-Host Associations (Growth Promotion Without Nodulation) B. elkanii can colonize grass roots and promote growth through: Production of plant growth hormones (IAA, gibberellins) Enhanced root development and mineral uptake Demonstrated effects on: white oats, black oats, ryegrass Associated References: Similar to Paenibacillus azotofixans, which also promotes non-legume growth through PGPR mechanisms, B. elkanii exhibits plant growth-promoting properties beyond nodulation. Compatibility with Agricultural Inputs Input Type Compatibility Notes Bio-Pesticides Compatible Use with caution; avoid simultaneous application with broad-spectrum fungicides Bio-Fertilizers Compatible Synergistic effects with phosphate-solubilizing bacteria (PSB) observed Plant Growth Hormones Compatible Enhanced effects when combined with IAA or gibberellin-producing organisms Chemical Fertilizers Incompatible Avoid high rates of urea; inhibit nodule formation and nitrogen fixation Fungicides (Broad-Spectrum) Incompatible Fungicides reduce bacterial viability; use selective agents or pre-inoculation strategies Herbicides Compatible (Selective) Most herbicides compatible; avoid herbicides with antimicrobial activity Insecticides Compatible (Most) Compatibility varies by class; pyrethroids and neonicotinoids generally safe Shelf Life and Storage Shelf Life: Stable for up to 1 year from manufacturing date under proper conditions Storage Temperature: Cool, dry conditions; maintain 4–15°C for extended viability Light Protection: Store away from direct sunlight (UV light reduces viability) Humidity: Keep in sealed containers to prevent moisture loss Monitoring: Check for discoloration, odor, or contamination before use; discard if compromised Dosage and Application Methods Seed Coating/Seed Treatment Protocol: Prepare slurry: Mix 10 g of Bradyrhizobium elkanii with 10 g crude sugar in sufficient water Coat 1 kg of seeds evenly with slurry mixture Dry coated seeds in shade before sowing (allow 2–3 hours) Sow treated seeds immediately or store in cool, dry conditions for up to 60–90 days (viability maintained with proper storage) Advantages: Simple, cost-effective, ensures bacterium-seed contact, minimal equipment Seedling Treatment (Nursery Application) Protocol: Mix 100 g of Bradyrhizobium elkanii with sufficient water Dip seedling roots into inoculant slurry for 5–10 minutes Transplant seedlings into field immediately Applications: Nursery-raised legumes (peanut, some vegetables); labor-intensive but ensures high infection rates Soil Application (Broadcasting) Protocol: Mix 3–5 kg per acre of Bradyrhizobium elkanii with organic manure or vermicompost Distribute mixture uniformly across field during land preparation Incorporate into soil by plowing or harrowing 2–3 weeks before sowing Alternatively, apply close to seeding for rapid root colonization Advantages: Builds soil population; benefits residual inoculum for crop rotations Rate: 3–5 kg/acre optimal for establishment of ~10⁷–10⁸ CFU/g soil Irrigation/Fertigation Application Protocol: Mix 3 kg per acre of Bradyrhizobium elkanii in water (1:10 ratio) Pass through 100-mesh filter to remove particles Apply via drip lines or sprinkler irrigation system Best applied in evening to reduce UV exposure Advantages: Reaches established root systems; applicable post-emergence; supports nodule maintenance Timing: Early vegetative stages (V2–V4) for maximum nodule formation FAQ General Biology and Function What makes Bradyrhizobium elkanii different from free-living nitrogen fixers like Paenibacillus azotofixans? Bradyrhizobium elkanii is a symbiotic nitrogen fixer that forms intimate associations with legume roots and establishes specialized nitrogen-fixing nodules. In contrast, Paenibacillus azotofixans is a free-living nitrogen fixer that operates independently in soil without forming nodules. B. elkanii achieves higher nitrogen fixation rates (100–300 kg N/ha/season) through symbiotic cooperation with host plants, whereas P. azotofixans supplies more modest benefits (20–50 kg N/ha depending on conditions). B. elkanii cannot infect non-legume hosts, while P. azotofixans benefits a broad range of crop species through general PGPR mechanisms. For legume cultivation, B. elkanii is the preferred choice due to superior nitrogen fixation efficiency. How does Bradyrhizobium elkanii survive in different soil conditions? B. elkanii survives through multiple strategies. As a non-spore-forming bacterium, it depends on competitive fitness and metabolic flexibility rather than dormancy. B. elkanii tolerates: Acidic soils (pH 4.5–6.5): Acid-adapted strains (e.g., from Brazilian Cerrado) have evolved acid-tolerance proteins Drought: Produces exopolysaccharides (EPS) and osmolytes for osmotic balance Salinity: Synthesizes antioxidant molecules and ionic homeostasis proteins Temperature fluctuations: Expresses heat-shock proteins and cold-adaptation proteins Nutrient starvation: Metabolic versatility supports survival on minimal carbon and nitrogen sources Survival in soils is enhanced by host plant association, which supplies carbohydrates and maintains favorable microenvironments within root nodules. Can Bradyrhizobium species work synergistically with other soil bacteria? Yes, synergistic effects are well-documented: Phosphate-solubilizing bacteria (PSB): Co-inoculation with PSB (e.g., Bacillus megaterium) enhances phosphorus availability, improving B. elkanii nodule formation and nitrogen fixation Azospirillum species: Co-inoculation of B. elkanii with Azospirillum brasilense produces superior soybean growth through complementary IAA production; IAA stimulates root growth, improving rhizobial infection Bacillus subtilis: Co-inoculation in saline-alkali soils increased soybean yield by 18% compared to B. elkanii alone Biofilm formation: In consortia, rhizobia establish biofilms on root surfaces, enhancing competition with native rhizobia and pathogenic microbes What is the optimal soybean genotype for B. elkanii nodulation? Optimal genotypes depend on strain compatibility with soybean Rj genes: Best compatibility: Non-Rj genotypes and Rj4-gene carriers (with compatible B. elkanii strains, but not USDA61) Poor compatibility: Rj3-genotype cultivars generally incompatible with B. elkanii Type B strains Strain-specific: B. elkanii strains vary in effectiveness with different cultivars USDA76, SEMIA 587, SEMIA 5019: Good nodulation on most soybean genotypes USDA61: Excellent on soybean but incompatible with Rj4 genotypes Elite strains (e.g., ESA 123): Superior performance in drylands Recommendation: For maximum nitrogen fixation, select cultivars without restrictive Rj genes and pair with adapted strain Agricultural Applications and Management Which crops benefit most from Bradyrhizobium elkanii application? All legume crops benefit, but effectiveness varies: Highest benefit: Soybean, peanut, mung bean (90–300 kg N/ha fixation) Good benefit: Black-eyed pea, groundnut, yard-long bean (100–200 kg N/ha) Situational benefit: Native legumes, forage legumes (highly variable) No benefit: Non-legume crops (though limited growth promotion observed with some grasses) Factors maximizing benefit: Presence of native rhizobial population <10⁴ CFU/g soil Absence of antagonistic soil microbes Compatible soybean genotype (for soybean) Adequate soil pH (5.5–7.5) Highest ROI crops: Soybean in virgin soils; peanut in semi-arid regions with drought-adapted strains How quickly can farmers expect to see results from Bradyrhizobium elkanii inoculation? Timeline: 1–2 weeks post-inoculation: Infection thread formation; root colonization progresses 2–4 weeks: Visible nodule appearance; initiation of nitrogen fixation 4–8 weeks: Peak nodulation and nitrogen fixation rates established 8–16 weeks (R1–R5 stages in soybean): Cumulative nitrogen benefit becomes apparent in plant biomass Harvest: Final yield difference becomes quantifiable Field observations: Early-inoculated plants show accelerated growth compared to uninoculated controls Root development superior within 3–4 weeks Leaf color and vigor improvements evident by 6–8 weeks Yield increase: 5–60% depending on initial soil population and environmental conditions Maximum benefit: Observed at crop maturity; early-season nodulation establishes sustained nitrogen supply for pod fill and grain development Is Bradyrhizobium elkanii compatible with other agricultural inputs? Compatibility Summary: ✓ Bio-pesticides: Compatible (exclude broad-spectrum fungicides) ✓ Bio-fertilizers & PSB: Highly compatible; synergistic effects ✓ Plant hormones (IAA, GA): Compatible; enhanced effects ✓ Herbicides: Most compatible; avoid antimicrobial formulations ✗ Chemical fertilizers: High nitrogen rates inhibit nodulation ✗ Broad-spectrum fungicides: Lethal to B. elkanii; use selective or post-inoculation application ✗ Chemical nematicides: Many reduce viability Recommendation: Apply B. elkanii as early as possible (seed or pre-plant soil); avoid fungicides during first 4–6 weeks post-inoculation. Nitrogen fertilizers should be minimal (<50 kg N/ha) to avoid suppression of nitrogen fixation. Environmental Impact and Sustainability Does Bradyrhizobium elkanii have any environmental risks? Safety Profile: Naturally occurring soil bacterium; non-pathogenic to plants and animals No environmental accumulation; subject to normal soil microbial turnover Approved for organic farming systems (non-GMO) Reduces synthetic fertilizer use, thereby lowering greenhouse gas emissions Environmental Benefits: Replaces ~100–300 kg N/ha of synthetic fertilizer per crop season Synthetic fertilizer production accounts for ~2% of global energy use; B. elkanii reduces this footprint Decreases soil contamination risk from excess nitrate leaching Improves soil carbon sequestration through enhanced root exudation and organic matter Potential concerns (minimal): If non-competitive strains displace native rhizobia (rare; native populations typically recover) Nodule senescence releases carbon; however, net soil carbon often increases due to residual legume biomass Overall: B. elkanii inoculation is environmentally sound and beneficial to soil ecosystems How does Bradyrhizobium elkanii contribute to sustainable farming? Sustainability Contributions: Nitrogen cycle restoration: Reduces dependence on Haber-Bosch synthetic nitrogen Soil health: Improves biological activity, organic matter, and aggregate stability Crop rotation benefits: Legume crops (with B. elkanii) replenish nitrogen for subsequent cereal crops; reduces fertilizer for following season by 30–50% Carbon footprint reduction: Avoids emissions from fertilizer production (~0.5 kg CO₂ per kg N eliminated) Resilience to climate variability: Nitrogen fixation continues under drought (strain-dependent) better than relying on soil nitrogen pools Economic sustainability: Inoculant cost (~$2–5 per hectare) << synthetic nitrogen fertilizer cost (~$15–40 per hectare) Broader implications: Integration of B. elkanii inoculation into farming systems supports UN Sustainable Development Goal 12 (Responsible Consumption and Production) and Goal 13 (Climate Action) Can Bradyrhizobium elkanii help with climate change mitigation? Direct contributions: Reduced N₂O emissions: Elite strains carrying N₂O reductase (nos genes) reduce soil N₂O emissions by ~70% compared to standard strains Fertilizer reduction: Each kilogram of synthetic nitrogen avoided saves ~5 kg CO₂ equivalent from production and transport Soil carbon sequestration: Enhanced root exudation and legume residue decomposition increases soil carbon stocks Example calculation: Soybean field (50 ha) with B. elkanii inoculation Replaces 100 kg N/ha with biological fixation Avoids: 5,000 kg CO₂ equivalent (from fertilizer production), 100 kg N₂O equivalent (20 kg CO₂ equivalent), 250 kg CO₂ (from transport/application) Total mitigation: ~5,370 kg CO₂ equivalent per season Product Selection and Application Strategies How should Bradyrhizobium elkanii products be stored? Storage Conditions: Temperature: 4–15°C (cool, dry storage) Light: Darkness (UV light reduces viability by ~50% per week) Humidity: Sealed containers; humidity <70% Duration: Up to 1 year from manufacturing date Storage best practices: Keep in original sealed containers Store in dedicated cool storage (not with agrochemicals or fertilizers) Avoid direct sunlight, heat exposure Do not refrigerate below 4°C (cold stress reduces viability) Check for discoloration, foul odor, or contamination before use Discard products exceeding shelf life or showing signs of degradation Pre-application checks: Verify CFU concentration (should be ≥10⁸ CFU/g) Confirm expiration date Check for clumping or separation (sign of degradation) What is the optimal application timing for Bradyrhizobium elkanii? Timing Strategy: Best: Seed treatment 3–14 days before sowing (allows infection thread formation before water stress from germination) Good: At-planting seed treatment (simultaneous with sowing) Acceptable: Soil application 2–3 weeks before sowing (establishes soil population) Last resort: Early V2–V4 application (later than ideal but still effective) Seasonal considerations: Spring planting: Warmer soils favor infection; apply when soil temperature ≥15°C Monsoon crops: Ensure good soil drainage; waterlogged soils reduce nodulation Dry seasons: Apply post-irrigation or pre-monsoon for optimal soil moisture Sequential plantings: If crop residue is retained (no-till), residual soil population often supports second-year crops; re-inoculation beneficial only if populations fall below 10⁴ CFU/g soil Can organic farmers use Bradyrhizobium elkanii? Organic Certification Status: Yes, fully approved for certified organic production Bradyrhizobium elkanii is a naturally occurring, non-GMO soil bacterium Meets IFOAM (International Federation of Organic Agriculture Movements) standards Complies with organic certification requirements (USDA National Organic Program, EU Organic Regulation, others) Organic system benefits: Eliminates synthetic nitrogen fertilizer requirement Supports crop rotation strategies Improves soil biological diversity Aligns with organic philosophy of biological nutrient cycling Recommendations for organic farmers: Use seed treatments rather than synthetic fungicide combinations Apply biological inoculants early (seed or pre-plant) Avoid synthetic fungicides during critical nodulation period (first 4–6 weeks) Incorporate into comprehensive organic management (crop rotation, adequate organic matter, proper pH) Connecting B. elkanii and P. azotofixans While Bradyrhizobium elkanii and Paenibacillus azotofixans represent distinct nitrogen-fixing strategies, both contribute to agricultural sustainability: Characteristic B. elkanii P. azotofixans Nitrogen fixation strategy Symbiotic (nodulation) Free-living soil Host range Legumes (highly specific) Broad host range (all crops) Nitrogen contribution 100–300 kg N/ha/season 20–50 kg N/ha/season Nodule formation Yes; essential No PGPR functions Limited (nodulation-focused) Multiple (IAA, GA, biocontrol) Best use Legume crops Non-legumes and supplementary legume inoculation Interaction Can compete for nodule occupancy Complementary; enhances B. elkanii effectiveness via IAA production Integrated Approach: In diversified farming systems, B. elkanii inoculant for legume crops followed by P. azotofixans for non-legume crops creates a comprehensive biological nitrogen management strategy. Conclusion Bradyrhizobium elkanii represents a cornerstone microorganism for sustainable legume production. Its sophisticated molecular mechanisms for host recognition, infection, and nitrogen fixation, combined with practical agricultural benefits, make it indispensable for modern sustainable agriculture. With proper strain selection, timing, and integration with complementary practices, B. elkanii inoculation can significantly improve crop yields, reduce fertilizer dependency, and enhance soil health across diverse agroecosystems. Sustainability Advantage Related Products Acetobacter xylinum Azospirillum brasilense Azospirillum lipoferum Azospirillum spp. Azotobacter vinelandii Beijerinckia indica Bradyrhizobium japonicum Gluconacetobacter diazotrophicus More Products Resources Read all