Chaetomium cupreum is a filamentous ascomycete fungus known for its biocontrol and biodegradation capabilities. It suppresses plant pathogens like Fusarium through antifungal metabolites and contributes to organic matter recycling via lignocellulose degradation. Its production of hydrolytic enzymes highlights its potential in sustainable agriculture and industrial biotechnology. < Microbial Species Chaetomium cupreum Chaetomium cupreum is a filamentous ascomycete fungus known for its biocontrol and biodegradation capabilities. It suppresses plant pathogens like Fusarium through antifungal metabolites and contributes… Show More Strength 1 x 10⁸ CFU per gram / 1 x 10⁹ CFU per gram Product Enquiry Download Brochure Benefits Organic Matter Decomposition Facilitates the decomposition of organic matter in the soil, enhancing nutrient availability for plants and improving soil structure. Induced Systemic Resistance (ISR) Induces systemic resistance in plants against pathogens, thereby reducing the need for chemical pesticides and promoting sustainable farming. Disease Suppression Effectively suppresses diseases like damping-off and root rot in various crops, contributing to improved plant health and yield. Biocontrol Agent Chaetomium cupreum acts as a biocontrol agent, inhibiting the growth of plant pathogens such as Fusarium and Rhizoctonia through antagonistic mechanisms. Dosage & Application Additional Info Scientific References Mode of Action FAQ Scientific References Content coming soon! Mode of Action Content coming soon! Additional Info Target pests: Phytophthora nicotianae root rot in citrus, anthracnose of coffee 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 Wettable Powder: 2 x 10⁶ CFU per gram Foliar Application: 1 Acre dose: 3-5 kg, 1 Ha dose: 7.5 - 12.5 Kg Soil Application (Soil drench or Drip irrigation): 1 Acre dose: 3-5 kg, 1 Ha dose: 7.5 - 12.5 Kg Soil Application (Soil drench or Drip irrigation) for Long duration crops / Orchards / Perennials: 1 Acre dose: 3-5 kg, 1 Ha dose: 7.5 - 12.5 Kg, Apply 2 times in 1 Year. Before onset of monsoon and after monsoon. Foliar application for Long duration crops / Orchards / Perennials: 1 Acre dose: 3-5 kg, 1 Ha dose: 7.5 - 12.5 Kg, Apply 2 times in 1 Year. Before onset of monsoon and after monsoon. Soluble Powder: 1 x 10⁸ CFU per gram Foliar Application: 1 Acre dose: 1 Kg, 1 Ha dose: 2.5 Kg Soil Application (Soil drench or Drip irrigation): 1 Acre dose: 1 Kg, 1 Ha dose: 2.5 Kg Soil Application (Soil drench or Drip irrigation) for Long duration crops / Orchards / Perennials: 1 Acre dose: 1 Kg, 1 Ha dose: 2.5 Kg, Apply 2 times in 1 Year. Before onset of monsoon and after monsoon. Foliar Application for Long duration crops / Orchards / Perennials: 1 Acre dose: 1 Kg, 1 Ha dose: 2.5 Kg, Apply 2 times in 1 Year. Before onset of monsoon and after monsoon. Soil Application Method Mix at recommended doses with compost and apply at early life stages of crop along with other biofertilizers. Mix Chaetomium Cupreum at recommended doses in sufficient water and drench soil at early leaf stage / 2-4 leaf stage / early crop life cycle. Drip Irrigation: If there are insoluble particles, filter the solution and add to drip tank. For long duration crops / Perennial / Orchard crops: Dissolve Chaetomium Cupreum at recommended doses in sufficient water and apply as a drenching spray near the root zone 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 Foliar application to be done at early disease incidence. 1-2 follow-up sprays to be done at weekly intervals. Mix Chaetomium Cupreum at recommended doses in sufficient water and spray on foliage. 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 Chaetomium Cupreum solution for more than 24 hours after mixing in water. FAQ Content coming soon! Related Products Ampelomyces quisqualis Bacillus subtilis Bacillus tequilensis Fusarium proliferatum Lactobacillus plantarum Pediococcus pentosaceus Pseudomonas spp. Trichoderma harzianum 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 Product Enquiry 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 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. Related Products Acetobacter xylinum Azospirillum brasilense Azospirillum lipoferum Azospirillum spp. Azotobacter vinelandii Beijerinckia indica Bradyrhizobium japonicum Gluconacetobacter diazotrophicus More Products Resources Read all

Boost soil health with Multi-Bio microbial blend from Indogulf BioAg. 100% organic, effective, and certified. Enhance plant growth with our premium solution. < Microbial Blends Multi-Bio Multi-Bio is a dual-action bio-fertilizer with beneficial mycorrhiza fungi and essential nutrients. It supports organic nutrient absorption and promotes optimal soil productivity for healthy plant growth. Product Enquiry Download Brochure Benefits Provides positive residual effect for subsequent crops Leaves beneficial effects for future planting cycles. Fast Seed Germination, Flowering, and Maturity in Crop Accelerates growth stages, improving crop cycle efficiency. Restores natural fertility Enhances soil health and fertility, promoting sustainable agricultural practices. Pollution-free and eco-friendly Does not harm the environment and promotes sustainable farming practices. Components Amount Pantoea spp. 2×10⁷ Bacillus spp. 2×10⁷ Azotoacter spp. 2×10⁷ Rhizobium spp. 2×10⁷ Cyanobacteria 2×10⁷ LB Planetarium 1×10⁷ Plant Growth Promoting Rhizobacteria (PGPR) 2×10⁷ Composition Dosage & Application Additional Info Dosage & Application Powder Usage Mix 40 grams of MULTI-BIO powder in 500 liters of water. Apply through a drip irrigation system or as a spray for one acre of crop. It is preferable to apply before using any anti-weed or anti-fungal products. Liquid Usage Mix 40 ml of MULTI-BIO liquid in 500 liters of water for one acre of crop. Apply before using any anti-weed or anti-fungal products. Liquid Dosage Seed Treatment: For cereals like Paddy, Wheat, Maize, Barley, Oats, Millets, etc., mix 20 ml of Multi-Bio Liquid in 500 ml of water. Thoroughly coat 15 kgs of seeds with this mixture. Dry the seeds in shade before sowing. Root Dip Treatment: Mix 40 ml of Multi-Bio Liquid in 5 liters of water. Dip the roots before planting for one acre. Alternatively, prepare a small bed in the field, add 40 ml of Multi-Bio Liquid with water (half-inch depth), and dip the roots of plants to be planted for one acre in this suspension for 8 to 12 hours before planting. Main Field Application: Mix 40 ml in 20 liters of water and apply to the soil via drip system for one acre of land. Application Frequency For main field application, treat the soil before sowing and again at the flowering stage. Additional Info Mode of Action PGPR (Plant Growth Promoting Rhizobacteria) facilitates plant growth and development both directly and indirectly. Direct stimulation includes providing plants with fixed nitrogen, phytohormones, iron sequestered by bacterial siderophores, and soluble phosphate. Indirect stimulation involves biocontrol of phytopathogens, promoting overall plant growth and development. PGPR perform these functions through specific enzymes that induce morphological and physiological changes, enhancing nutrient and water uptake in plants. Recommended Crops Cotton, Sugarcane, Rice, Tea, Coffee, Carrot, Lettuce, Tomato, Pepper, Legumes, Peanuts Shelf Life & Packaging Storage: Store in a cool, dry place at room temperature Shelf Life: 24 months from the date of manufacture at room temperature Packaging: 1 kg pouch / 1 litre bottle Related Products Fermacto Micro-Manna Microm More Products Resources Read all

Boost crop health with RootX from Indogulf BioAg. High-quality, organic root growth enhancer. Trusted by farmers globally for vibrant, thriving crops. < Crop Kits Dates Pro Dates PRO is an organic alternative to urea, providing essential nutrients that enhance plant health, strengthen crops, and boost overall yield. Product Enquiry Download Brochure Comprehensive Nutrient Coverage Ensures all essential nutrients in organic form for balanced plant growth. Enhanced Stress Tolerance Supports resilience against environmental stresses and promotes robust plant development. Improved Quality and Taste Enhances organoleptic qualities, improving flavor and sensory attributes of produce. Enhanced Flowering and Yield Promotes better flowering, reduces flower dropping, and enhances grain and fruit formation. Benefits Components DATES PRO consists of bioactive humic and fulvic substances of vermicompost origin. It consists of cytokinins, auxins, betaines and gibberellins that are derived from seaweed fermentation. It consists of biologically derived N,P,K and trace elements from vermi compost and seaweed which aid in better root and shoot growth and supplement the plant with essential nutrients at critical stages of crop growth. Free from Salmonella, Shigella , E.Coli. Composition Dosage & Application Additional Info Dosage & Application Drip System: Mix 12 liters of DATE PRO thoroughly with plain water and apply to a 1-hectare planting area using drip irrigation. Apply once at planting and again at the flowering stage. Drenching System: Apply DATE PRO dropwise to the main water source for planting. Let normal water run for up to 10 minutes, then begin applying the soaked DATE PRO. Dosage: 12 Liters / Hectare Apply once at planting or at the flowering stage. Additional Info Shelf Life & Packaging Storage: Store in a cool, dry place at room temperature Shelf Life: 24 months from the date of manufacture at room temperature Packaging: 1 litre bottle Related Products Aminomax SP Annomax BioProtek Biocupe Neem Plus Seed Protek Silicomax BloomX More Products Resources Read all

Indogulf BioAg’s Neem Powder: 100% organic, effective soil treatment. Enhance plant health with our premium, eco-friendly neem powder. Certified & trusted. < Soil Fertilizers Neem Powder The residue from crushed Neem seed kernels used for oil extraction. It contains high levels of nutrients like NPK, nortriterpenoids, and isoprenoids. Product Enquiry Download Brochure Benefits Completely Organic & Biodegradable Derived from the neem tree, it breaks down quickly, enhancing natural plant growth and reducing chemical fertilizer demand by 25 to 30% in the first year. Better Yield Than Conventional Urea Provides superior yields compared to urea while enriching soil quality and maintaining soil fertility. Rich Source of NPK and Micro Nutrients Contains essential nutrients and micro nutrients that enhance soil quality and increase humus content, ideal for improving low organic matter soils. Nematode Prevention Controls a broad spectrum of nematodes and soil pests, promoting nutrient absorption and improving crop yields. Dosage & Application Kit Contents Composition Key Benefits FAQ Additional Info Dosage & Application Neem Powder is applied when preparing your soil for sowing. Plough the soil deeply and mix the Neem Powder thoroughly during this process. This method will yield better results with your harvest. Neem Powder works as both an organic fertilizer and a natural pesticide. If you are transitioning from chemical fertilizer to Neem Powder, apply both over time. Gradually reduce the amount of chemical fertilizer until you are using only Neem Powder. Water the plants after applying Neem Powder to help the nutrients get well absorbed into the soil. Additional Info Shelf Life & Packaging: Storage: Store in a cool, dry place at room temperature Shelf Life: 24 months from the date of manufacture at room temperature Packaging: 1 kg FAQ Content coming soon! Kit Contents Content coming soon! Composition Content coming soon! Key Benefits Content coming soon! Related Products Bio-Manna Bio-Manure Fermogreen Revive Bio More Products Resources Read all

Lactobacillus paracasei supports immune function, aids digestion, and helps maintain a balanced gut microbiome for improved gut health. < Microbial Species Lactobacillus paracasei Lactobacillus paracasei supports immune function, aids digestion, and helps maintain a balanced gut microbiome for improved gut health. Strength 1 x 10⁸ CFU per gram / 1 x 10⁹ CFU per gram Product Enquiry Download Brochure Benefits Digestive Health Support This probiotic helps maintain a balanced gut microbiota, alleviating symptoms of gastrointestinal discomfort and promoting overall digestion. Stress Reduction This strain may contribute to reduced stress and anxiety levels, promoting mental well-being through the gut-brain axis. Immune System Enhancement It enhances immune function by stimulating the production of antibodies and improving the body’s ability to combat infections. Support for Lactose Digestion It aids in the digestion of lactose, making it beneficial for individuals with lactose intolerance. Dosage & Application Additional Info Scientific References Mode of Action 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! Related Products Bifidobacterium animalis Bifidobacterium bifidum Bifidobacterium breve Bifidobacterium infantis Bifidobacterium longum Clostridium butyricum Lactobacillus acidophilus Lactobacillus bulgaricus More Products Resources Read all

< Crop Kits Seed Protek SeedProtek is a seed treatment with Mycorrhiza, PGPR, and nutrient-mobilizing microbes for germination and stress tolerance. Product Enquiry Download Brochure Improved Nutrient Uptake Mobilizes key nutrients including nitrogen, phosphorus, potassium, and micronutrients through specialized microbial strains. Stronger Germination and Disease Defense Promotes uniform seed germination and suppresses soil-borne diseases, ensuring healthier early-stage development. Enhanced Root Proliferation Stimulates vigorous root growth through PGPR and mycorrhizae, improving nutrient access and plant anchorage. Increased Stress Tolerance Boosts drought resistance and helps plants withstand both biotic and abiotic stress via mycorrhizal symbiosis and beneficial metabolites. Benefits Content coming soon! Composition Dosage & Application Additional Info Dosage & Application Seed dressing for crops: Wheat, Barley, Rice, Soybean, Peanuts, and similar crops with seed rate of 100–120 Kg / Ha. Apply 2 mL/kg seed Additional Info Mode of Action Microbes in SeedProtek multiply as the roots grow in a three-dimensional way around the root system. Biofertilizers: Nitrogen-fixing bacteria help fix atmospheric nitrogen into the soil Phosphorus-solubilizing bacteria assist in better solubilization of fixed phosphorus Potassium-mobilizing bacteria : Potash is an expensive element and usually gets leached out. The bacteria mobilize potassium and make it available to the plant Mycorrhiza colonizes the root system and extends hyphae beyond the root system, reaching into zones not normally accessed by the root. This ensures plants get more phosphorus and other micronutrients from ‘far away’ zones. Mycorrhiza offers unique biostimulant properties that enhance tolerance to biotic and abiotic stress PGPR (Plant Growth Promoting Rhizobacteria): Silica-solubilizing bacteria impart drought tolerance and promote robust growth Bacillus spp promotes a healthy root system and has a fungistatic action Trichoderma spp enhances root growth and has a fungistatic action Organic acids and enzymes secreted by the microbes help mobilize various fixed elements in the soil Storage Requirements Store below 40°C in a cool, dry, well-ventilated place. Keep away from sunlight, children, and animals. Do not store in metallic containers. Keep tightly closed when not in use. Handling Precautions Use standard hygiene and safety practices for agricultural products. Related Products Aminomax SP Annomax BioProtek Biocupe Neem Plus Silicomax Dates Pro BloomX More Products Resources Read all

Acidithiobacillus thiooxidans is a highly efficient sulfur-oxidizing bacterium that converts elemental sulfur and sulfide minerals into sulfate, enhancing soil nutrient availability and supporting crop growth. Its acidophilic nature allows it to thrive in extreme environments, making it a vital tool for bioremediation efforts, such as treating acid mine drainage and neutralizing soil contamination caused by heavy metals. Additionally, A. thiooxidans is widely used in bioleaching processes to extract valuable metals from low-grade ores, contributing to sustainable industrial and environmental practices. < Microbial Species Acidithiobacillus thiooxidans Acidithiobacillus thiooxidans is a highly efficient sulfur-oxidizing bacterium that converts elemental sulfur and sulfide minerals into sulfate, enhancing soil nutrient availability and supporting crop growth.… Show More Strength 1 x 10⁸ CFU per gram / 1 x 10⁹ CFU per gram Product Enquiry Download Brochure Benefits Enhanced Nutrient Absorption Facilitates sulfur solubilization in soil for better nutrient uptake by plants. Improved Plant Health Vital for photosynthesis and biological nitrogen fixation, promoting overall plant vigor. Increased Germination Rate Promotes higher percentage of seed germination, ensuring robust crop establishment. Stress Resistance Reduces plant stress and improves tolerance to adverse environmental conditions, enhancing yield stability. Dosage & Application Additional Info Scientific References Mode of Action FAQ Scientific References IndoGulf BioAg. "Thiobacillus Thiooxidans Manufacturer & Exporter." https://www.indogulfbioag.com/microbial-species/thiobacillus-thiooxidans IndoGulf BioAg. "Sulphur Solubilizing Bacteria - Manufacturer & Exporter." https://www.indogulfbioag.com/sulphur-solubilizing-bacteria IndoGulf BioAg. "Thiobacillus and Acidithiobacillus: Role, Uses, and Benefits in Mining, Soil, and Environment." https://www.indogulfbioag.com/post/thiobacillus-and-acidithiobacillus-role-uses-and-benefits-in-mining-soil-and-environment IndoGulf BioAg. "Acidithiobacillus ferrooxidans - Microbial Species." https://www.indogulfbioag.com/microbial-species/acidithiobacillus-ferrooxidans IndoGulf BioAg. "Bioremediation - Manufacturer & Exporter." https://www.indogulfbioag.com/bioremediation IndoGulf BioAg. "Acidithiobacillus ferrooxidans: The Extremophile Revolutionizing Agriculture and Bioleaching." https://www.indogulfbioag.com/post/acidithiobacillus-ferrooxidans-the-extremophile-revolutionizing-agriculture-and-bioleaching IndoGulf BioAg. "Biotech Solutions for Mining Industry." https://www.indogulfbioag.com/mining IndoGulf BioAg. "Microbial Wastewater Treatment: Types of Microorganisms, Functions, and Applications." https://www.indogulfbioag.com/post/microbial-wastewater-treatment-types-of-microorganisms-functions-and-applications-for-reclaim IndoGulf BioAg. "Thiobacillus thioparus - Bioremediation Microbial Species." https://www.indogulfbioag.com/microbial-species/thiobacillus-thioparus Zhi-Hui, Y., et al. (2010). "Elemental Sulfur Oxidation by Thiobacillus spp. and Acidithiobacillus thiooxidans." Science Direct . https://www.sciencedirect.com/science/article/pii/S1002016009602848 ACS Agricultural Science & Technology. (2025). "Encapsulation of Acidithiobacillus thiooxidans in Sulfur Particles." https://pubs.acs.org/doi/full/10.1021/acsagscitech.5c00025 Soil Science and Plant Nutrition. (2005). "Sulfur Oxidation and Bioavailability in Agricultural Soils." Vol 51, No 3. https://www.tandfonline.com/doi/abs/10.1111/j.1747-0765.2005.tb00043.x Universal Microbes. (2026). "Uses of Thiobacillus Thiooxidans in Agriculture and Soil Management." https://www.universalmicrobes.com/post/uses-of-thiobacillus-thiooxidans-in-agriculture OSTI.GOV . "Bacterial Leaching of Sulfide Ore by Thiobacillus ferrooxidans and Thiobacillus thiooxidans." https://www.osti.gov/biblio/7141232 Oregon State University Digital Repository. "Iron Oxidation by Thiobacillus ferrooxidans." https://ir.library.oregonstate.edu/downloads/6t053k34d Sulfur Oxidation Pathways in Acidithiobacillus Species. (2012). PubMed Central . https://pubmed.ncbi.nlm.nih.gov/22854612/ Liu, Y., et al. (2020). "Effect of Introduction of Exogenous Strain Acidithiobacillus thiooxidans A01 on Copper Leaching Efficiency." Frontiers in Microbiology , 11, 3034. https://www.frontiersin.org/journals/microbiology/articles/10.3389/fmicb.2019.03034/full Valdés, J., et al. (2008). "Acidithiobacillus ferrooxidans Metabolism: From Genome Sequence to Industrial Applications." BMC Genomics . https://pmc.ncbi.nlm.nih.gov/articles/PMC2621215/ Ibáñez, A., et al. (2023). "Unraveling Sulfur Metabolism in Acidithiobacillus Genus." PMC . https://pmc.ncbi.nlm.nih.gov/articles/PMC10531304/ Baker, B.J., et al. (2003). "Microbial Communities in Acid Mine Drainage." FEMS Ecology , 44(2), 139-152. https://academic.oup.com/femsec/article/44/2/139/546507 Rawlings, D.E. (1994). "Molecular Genetics of Thiobacillus ferrooxidans." Molecular Microbiology , 13(4), 695-706. https://pmc.ncbi.nlm.nih.gov/articles/PMC372952/ Science Direct. "Acidithiobacillus thiooxidans - An Overview." https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/acidithiobacillus-thiooxidans Wang, J., et al. (2014). "Bioleaching of Low-Grade Copper Sulfide Ores by Acidithiobacillus Species." Journal of Central South University , 21(5), 1995-3010. https://journal.hep.com.cn/jocsu/EN/10.1007/s11771-014-1995-3 Crop Nutrition. (2023). "Sulfate Sulfur vs. Elemental Sulfur Part II: Characteristics of Sulfur Oxidation." https://www.cropnutrition.com/resource-library/sulfate-sulfur-vs-elemental-sulfur-part-ii-characteristics-of-s-oxidation/ Mode of Action 1. Sulfur Oxidation Pathway Primary Biochemical Mechanism: Acidithiobacillus thiooxidans employs a multi-enzyme network to oxidize reduced inorganic sulfur compounds (RISCs) into sulfate. Elemental Sulfur Oxidation: Initiation enzyme: Sulfur dioxygenase (SDO; EC 1.13.11.18) Reaction: 2S⁰ + 3O₂ + 2H₂O → 2H₂SO₄ Rate: 2-8 mg S/g dry biomass/day (soil conditions); up to 100 mg/L in culture pH change: Gradual reduction from neutral to acidic conditions Intermediate Sulfur Oxidation: Thiosulfate oxidation: Involves thiosulfate dehydrogenase and tetrathionate intermediate formation Polysulfide oxidation: Direct oxidation of polysulfide chains Sulfite oxidation: Complete oxidation via sulfite oxidase enzymes Energy Generation: The oxidation reactions serve as the exclusive energy source for A. thiooxidans, powering ATP production through electron transport chain mechanisms: Electrons derived from S⁰ oxidation flow through cytochrome complexes Oxidative phosphorylation generates ATP for biosynthetic processes CO₂ fixation via the Calvin cycle provides organic carbon from atmospheric CO₂ 2. Acidification Mechanism Sulfuric Acid Production: The complete oxidation of elemental sulfur to sulfate produces sulfuric acid, which dissociates in soil solution: H₂SO₄ → 2H⁺ + SO₄²⁻ pH reduction: Typically 7.0-8.0 (alkaline) → 5.5-6.5 (slightly acidic) Localized vs. bulk: Bacterial aggregation creates micro-acidic environments around sulfur particles Controlled Acidification Advantage: Unlike rapid chemical acidification (e.g., adding mineral acids), biological sulfur oxidation provides: Gradual pH change preventing root damage Localized acid production concentrated around sulfur particles Sustained effect throughout growing season pH regulation prevents over-acidification through buffering interactions with soil minerals Soil Buffering and Sustainability: The acidification process continues as long as elemental sulfur particles remain available and moisture and oxygen conditions are adequate. In alkaline soils, acid production is partially neutralized by carbonate reactions: CaCO₃ + H₂SO₄ → CaSO₄ + H₂O + CO₂ Net effect: Sustained pH reduction despite buffering capacity 3. Nutrient Mobilization Mechanisms Primary and Secondary Micronutrient Release: Iron Mobilization: Lowered soil pH converts insoluble ferric hydroxide (Fe(OH)₃) to soluble ferrous iron (Fe²⁺) Ferrous iron is readily absorbed by plant roots and transported through vascular tissues pH-dependent availability: Each 1.0 pH unit decrease increases Fe availability 10-100 fold Zinc Mobilization: Zinc silicates and oxides become soluble at pH <7.0 Complexation with organic acids (produced during sulfur oxidation) further enhances Zn bioavailability 25-40% increase in Zn concentration in soil solution Manganese and Copper Mobilization: Similar pH-dependent solubility increases Chelation effects from organic acids enhance bioavailability 20-35% increase in plant-available micronutrients Phosphorus Availability: Improved soil pH reduces phosphate fixation by iron and aluminum oxides Secondary effect improving overall nutrient balance 4. Biofilm Formation and Rhizosphere Colonization Biofilm Architecture: A. thiooxidans forms biofilms on elemental sulfur particles and soil mineral surfaces, enhancing sulfur oxidation efficiency: Extracellular polymeric substances (EPS): Polysaccharides and proteins trap water and nutrients Cell aggregation: Biofilms can reach 10⁸-10⁹ CFU per gram of biofilm Oxygen gradient management: Biofilm structure enables anaerobic bacterial zones with access to oxygen at biofilm surface Nutrient concentration: Localized nutrient accumulation in biofilm matrix Rhizosphere Persistence: Colonization density: 10⁶-10⁸ CFU per gram of rhizosphere soil Persistence period: 8-16 weeks under favorable conditions; periodic re-inoculation recommended for sustained benefit Root surface colonization: Bacteria attach to root epidermis; hyphal invasion not observed (non-pathogenic) 5. Metabolic Flexibility and Environmental Adaptation Chemolithoautotrophic Metabolism: A. thiooxidans survives on inorganic substrates exclusively: Energy source: Elemental sulfur or sulfide minerals Carbon source: CO₂ (fixed via Calvin cycle) Electron acceptor: Oxygen (aerobic); some studies suggest ferric iron under oxygen-limited conditions Nutrient requirements: Minimal (nitrogen, phosphorus, trace metals) Acid Tolerance Mechanisms: pH homeostasis: Internal pH maintained at ~6.0-6.5 despite external pH <2.0 Proton pumps: ATP-driven expulsion of excess H⁺ ions Protective proteins: Acid-resistant structural proteins in cell wall and membrane DNA repair: Enhanced mechanisms preventing acid-induced damage Optimal Growing Conditions: pH range: 2.0-7.0; optimal 3.0-5.0 Temperature: 5-45°C; optimal 25-35°C Moisture: Requires adequate soil moisture (60-80% field capacity) Oxygen: Obligate aerobe; requires dissolved oxygen >0.5 mg/L Nutrient availability: Nitrogen, phosphorus, trace metals required for biosynthesis 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 Seed Coating/Seed Treatment : Coat 1 kg of seeds with a slurry mixture of 10 g of Acidithiobacillus Thiooxidans and 10 g of crude sugar in sufficient water. Seedling Treatment : Dip the seedlings into a mixture of 100 grams Acidithiobacillus Thiooxidans and sufficient water. Soil Treatment : Mix 3-5 kg per acre of Acidithiobacillus Thiooxidans with organic manure/organic fertilizers. Irrigation : Mix 3 kg per acre of Acidithiobacillus Thiooxidans in a sufficient amount of water and run into the drip lines. FAQ What is Thiobacillus thiooxidans used for? Agricultural Uses: Thiobacillus thiooxidans (now reclassified as Acidithiobacillus thiooxidans) is primarily used in agriculture to convert elemental sulfur into plant-available sulfate ions (SO₄²⁻). This sulfur-oxidizing bacterium is applied as a biofertilizer component for: Sulfur deficiency correction: Enables plant uptake of sulfur from elemental sulfur fertilizers applied to the soil Micronutrient mobilization: Lowers soil pH, making iron, zinc, manganese, and other micronutrients more bioavailable in alkaline soils Enhanced nitrogen efficiency: Improved sulfur nutrition supports better nitrogen assimilation and protein synthesis Sustainable fertilizer strategy: Reduces dependence on chemical fertilizers while improving soil health Non-Agricultural Uses: Bioremediation: Treatment of contaminated soils and wastewater Bioleaching: Industrial extraction of metals from low-grade ores (copper, zinc, gold) Odor control: Removal of hydrogen sulfide from sewage and industrial waste streams Environmental remediation: Acid mine drainage treatment and heavy metal sequestration Where is Acidithiobacillus ferrooxidans found? Natural Environments: Acidithiobacillus ferrooxidans inhabits highly acidic, iron-rich environments worldwide: Primary Habitats: Acid mine drainage (AMD): The organism is the dominant bacterium in AMD systems from both active and abandoned mines Pyrite oxidation zones: Natural oxidation of iron sulfide minerals in geological formations Acidic mineral deposits: Iron-rich mineral seams and ore bodies Acidic soils: Sulfide-containing soils; particularly enriched in mining-affected regions Sulfuric acid springs: Natural geothermal areas with acidic hot springs Coal and mineral processing sites: Industrial settings where mineral oxidation occurs Geographic Distribution: Americas: Abundant in mining regions of Peru, Chile, Mexico, and Canada Europe: Common in mining areas of Spain, Germany, and Eastern Europe Asia: Identified in mining regions across China, India, and Central Asia Africa: Present in metal mining regions of South Africa, Zambia, and the Democratic Republic of Congo pH and Redox Requirements: Optimal pH range: 1.5-2.5 (highly acidic) Functional range: pH 1.0-5.0 Requires oxidizing conditions (dissolved oxygen or ferric iron as electron acceptor) Laboratory Isolation: A. ferrooxidans can be isolated from mine drainage samples, pyrite-bearing soils, or ore leaching environments using standard 9K medium formulated for extremely acidophilic bacteria. What does Thiobacillus ferrooxidans do? Biochemical Functions: Thiobacillus ferrooxidans (now Acidithiobacillus ferrooxidans) is a chemolithoautotrophic bacterium that performs two primary oxidative functions: 1. Iron Oxidation: Reaction: 4Fe²⁺ + O₂ + 4H⁺ → 4Fe³⁺ + 2H₂O Mechanism: Oxidation rate ~500,000 times faster than abiotic processes Biological significance: Converts insoluble ferrous iron to soluble ferric iron Industrial application: Drives bioleaching of iron-containing minerals 2. Sulfur/Sulfide Oxidation: Reaction: 2S⁰ + 3O₂ + 2H₂O → 2H₂SO₄ Products: Sulfuric acid and sulfate ions Environmental impact: Major contributor to acid mine drainage formation Metabolic flexibility: Can oxidize thiosulfate, polysulfides, and other reduced sulfur forms Energy and Carbon Metabolism: Energy source: Inorganic electron donors (Fe²⁺, S⁰, etc.) Carbon source: Atmospheric CO₂ (autotrophic; Calvin cycle) ATP generation: Oxidative phosphorylation via electron transport chain Biosynthesis: De novo amino acid and nucleotide synthesis from CO₂ Agricultural Applications: Iron solubilization: Makes unavailable iron forms plant-accessible Crop yield: 58% shoot length increase, 54% root length increase, 79% iron concentration increase Stress tolerance: Improves plant tolerance to iron deficiency, drought, and salinity Environmental Impacts: Beneficial: Bioremediation of contaminated soils; metal recovery from wastes Problematic: Acid mine drainage formation; potential heavy metal leaching in uncontrolled settings Is Thiobacillus thiooxidans harmful or beneficial? Beneficial Aspects (Overwhelming Evidence): Agricultural Benefits: Sulfur mobilization: Converts immobile elemental sulfur to plant-available sulfate Soil enrichment: Sustainable nutrient supply without chemical residues Micronutrient release: Improves iron, zinc, manganese, and other micronutrient availability through pH reduction Crop productivity: 20-40% yield increases in sulfur-deficient and alkaline soils Soil health: Stimulates beneficial soil microbial communities Non-toxic: Safe for plants, animals, beneficial insects, and soil organisms Environmental Benefits: Bioremediation: Breaks down sulfur-rich contaminants and hydrogen sulfide Sustainable mining: Enables bioleaching processes with lower environmental impact than chemical leaching Waste treatment: Effective in wastewater and sludge treatment Odor control: Oxidizes hydrogen sulfide from sewage treatment and landfills Harmful Aspects (Negligible in Controlled Agricultural Use): Potential Concerns (Under Specific Conditions): Acid formation: Produces sulfuric acid, potentially over-acidifying soils if applied excessively pH management: Requires monitoring in naturally acidic soils Nutrient competition: High sulfur oxidation rates can temporarily increase competition for nitrogen between bacteria and plants Mitigation Strategies: Proper application rate: 2-5 kg/acre prevents over-acidification Soil testing: Assess pH before application; unsuitable for acidic soils (pH <5.5) Monitoring: Regular soil pH checks ensure optimal conditions Nitrogen supplementation: May be needed during high oxidation rates in nitrogen-deficient soils Safety Assessment: Non-pathogenic: No human, animal, or plant pathogens identified Organic certified: Approved for organic farming under NPOP and USDA-NOP standards Environmental benign: No bioaccumulation; biodegrades naturally Regulatory status: No restrictions on agricultural use in any major regulatory jurisdiction Conclusion: Thiobacillus thiooxidans is definitively beneficial when properly applied to sulfur-deficient and alkaline agricultural soils, with negligible harmful effects under recommended application rates. How does Thiobacillus thiooxidans help in bioleaching? Bioleaching Definition: Bioleaching is the use of microorganisms to extract soluble metal ions from solid ore or mineral matrices, enabling recovery of valuable metals from low-grade or waste materials. Thiobacillus thiooxidans Role in Bioleaching: 1. Sulfide Mineral Oxidation: The bacterium oxidizes reduced sulfur in sulfide minerals (pyrite, chalcopyrite, sphalerite, etc.): Reaction: FeS₂ + 3.5O₂ + H₂O → Fe²⁺ + 2SO₄²⁻ + 2H⁺ (initially) Product: Elemental sulfur as intermediate product Sequential step: T. thiooxidans oxidizes elemental sulfur to sulfate Mechanism: Creates acidic microenvironment facilitating further mineral dissolution 2. Acid Production: Sulfuric acid generation: 2S⁰ + 3O₂ + 2H₂O → 2H₂SO₄ pH reduction: Rapid drop to pH 2.0-3.0 in leaching systems Metal solubilization: Acid directly dissolves metal oxides and sulfides Iron mobilization: Produced Fe³⁺ acts as additional oxidant for metallic minerals 3. Complementary Bioleaching: T. thiooxidans works synergistically with T. ferrooxidans (iron oxidizer) in mixed cultures: Division of labor: T. ferrooxidans oxidizes Fe²⁺ to Fe³⁺; T. thiooxidans oxidizes S⁰ Enhanced efficiency: 18.5% higher copper recovery with both organisms than either alone Mineral-specific advantages: Copper/Zinc-rich ores: T. thiooxidans shows superior Cu extraction (2× higher Cu/Zn ratio) Iron-rich ores: T. ferrooxidans dominates; T. thiooxidans secondary contributor Mixed sulfides: Both organisms essential for complete metal recovery 4. Industrial Metal Recovery: Metal Recovery Rate (T. thiooxidans) Industrial Significance Copper 40-65% from chalcopyrite Critical for electronics, renewable energy Zinc 50-75% from sphalerite Essential for alloys, galvanization Gold (auxiliary) 25-40% from arsenopyrite Minor component; enhances overall recovery Rare Earth Elements 70-95% from ion-adsorption ores Emerging application; high value 5. Process Optimization: Factors maximizing T. thiooxidans bioleaching efficacy: Sulfur particle size: Fine particles (25-50 μm) maximize surface area Mineral abundance: 10-20% ore concentration optimal pH management: Maintaining 2.0-3.0 enhances both oxidation and metal solubility Oxygen availability: Sufficient aeration critical (O₂ dissolution) Temperature: 25-35°C optimal; thermophilic strains available for higher temperatures Culture inoculation: Early inoculation (days 0-10) maximizes colonization 6. Environmental Sustainability: Bioleaching advantages over chemical methods: Lower chemical input: Minimal external reagents required Reduced toxic waste: Fewer byproducts requiring disposal Lower energy intensity: Ambient temperature processing vs. high-temperature smelting Smaller environmental footprint: Suitable for remote mining sites with limited infrastructure Selective extraction: Can target specific metals from complex ore matrices Challenges and Limitations: Slow process: Bioleaching requires 30-120 days vs. 1-2 days for chemical leaching Metal concentration sensitivity: Very high metal concentrations can inhibit bacterial growth Oxygen dependence: Requires continuous aeration; suitable mainly for heap leaching Sulfide preference: Most efficient on sulfide ores; less effective on oxide ores Conclusion: Thiobacillus thiooxidans is essential for bioleaching processes targeting sulfide minerals, particularly copper, zinc, and emerging rare earth element recovery, offering sustainable alternatives to environmentally damaging chemical extraction methods. Can Thiobacillus species improve soil fertility? Soil Fertility Definition: Soil fertility encompasses the capacity of soil to supply essential plant nutrients in optimal amounts and proportions. It encompasses both nutrient content and nutrient availability. Thiobacillus species Contributions to Soil Fertility: 1. Direct Nutrient Mobilization: Sulfur Availability: Deficiency problem: 40% of agricultural soils lack adequate available sulfur despite total sulfur presence T. thiooxidans solution: Converts S⁰ → SO₄²⁻ (plant-available form) Benefit: 40-60% improvement in sulfur utilization from elemental sulfur applications Crop impact: Protein synthesis improvement; nitrogen assimilation enhancement Micronutrient Release: Iron: 30-50% increase in available iron through pH-dependent solubility Zinc: 25-40% increase through pH reduction and chelation Manganese: 20-35% increase; critical for chlorophyll synthesis Copper: 15-30% increase; cofactor in many plant enzymes Phosphorus Availability: Mechanism: Improved soil pH (7.0-8.0 → 5.5-6.5) reduces P fixation by Fe/Al oxides Benefit: 15-30% increase in plant-available phosphorus Dual advantage: Works synergistically with phosphate-solubilizing bacteria 2. Soil pH Management and Buffer Capacity: Alkaline Soil Remediation: Problem soils: Calcareous and alkaline soils (pH >7.5) limit nutrient availability T. thiooxidans strategy: Gradual pH reduction through controlled sulfuric acid production Advantage over chemicals: Sustainable pH management without risk of over-acidification Duration: Sustained effect throughout growing season as sulfur oxidation continues pH-Dependent Nutrient Availability Chart: pH 5.0-6.0 (optimal for T. thiooxidans effects): Maximum Fe, Mn, Zn, Cu availability pH 6.5-7.5: Balanced nutrient availability; T. thiooxidans role moderate pH >8.0: Multiple micronutrients immobile; T. thiooxidans essential for remediation 3. Organic Matter and Humus Formation: Indirect Benefit: Improved pH: Facilitates decomposition of plant residues and organic matter Microbial stimulation: Enhanced soil microbial activity during and after T. thiooxidans colonization Nutrient cycling: Improved cycling of organic-bound nutrients Carbon sequestration: Increased microbial biomass and soil organic matter storage 4. Symbiotic Relationships: T. thiooxidans enhances activity of complementary organisms improving fertility: Nitrogen-Fixers (Rhizobium, Azospirillum): Mechanism: Improved sulfur status enhances nitrogen fixation rate by 15-25% Reason: Sulfur is critical cofactor in nitrogenase enzyme Benefit: Legume crops achieve 20-30% higher nitrogen fixation Phosphate-Solubilizers (Bacillus, Pseudomonas): Mechanism: Lowered pH enhances phosphate-solubilization efficacy Synergy: Combined inoculation achieves 1.5-2.0× greater phosphorus availability than single organism Mycorrhizal Fungi (Rhizophagus, Funneliformis): Mechanism: Improved nutrient availability supports hyphal growth and nutrient transfer Benefit: Enhanced nutrient acquisition through fungal-plant interface 5. Crop Productivity and Yield Impact: Field Performance Data: Cereals (wheat, maize, rice): 15-25% yield increase Legumes (chickpea, lentil, bean): 20-30% yield increase Oilseeds (soybean, canola): 25-35% yield increase Vegetables (tomato, pepper, onion): 20-40% yield increase Spices (turmeric, ginger): 30-45% yield increase in alkaline regions Cost-Benefit Analysis: Product cost: $15-25/kg Application rate: 2-5 kg/acre Total cost: $40-100/acre Revenue increase: $100-400/acre (at typical commodity prices) ROI: 200-400% return on investment 6. Long-Term Soil Health Benefits: Sustainable Fertility: Chemical independence: Reduces synthetic fertilizer requirement by 25-40% Soil biology: Stimulates diverse microbial populations supporting nutrient cycling Soil structure: Improved organic matter supports better aggregation and water-holding capacity Environmental safety: No chemical residues; suitable for organic farming Quantified Sustainability Metrics: Nitrogen fertilizer reduction: 20-30% decrease in synthetic N requirement Phosphorus efficiency: 30-40% improvement in P utilization from applied fertilizers Sulfur cycling: Continuous conversion of applied elemental sulfur reducing annual application needs Soil organic matter: 15-25% increase over 2-3 years through enhanced microbial activity 7. Crop-Specific Fertility Improvements: Crop Sulfur Response Micronutrient Response Overall Yield Increase Wheat Very high (deficient soils) High (alkaline soils) 15-25% Chickpea High (S-responsive crop) Moderate 20-30% Soybean Moderate High (Zn, Fe-responsive) 25-35% Tomato Moderate High (quality driver) 20-40% Groundnut High (S-responsive) Very high 30-40% Conclusion: Thiobacillus thiooxidans significantly improves soil fertility through direct nutrient mobilization, sustainable pH management, and enhancement of complementary beneficial microorganisms, delivering 20-40% productivity increases with simultaneous reductions in chemical fertilizer dependency. Are Thiobacillus bacteria used in wastewater treatment? Wastewater Treatment Applications: Yes, Thiobacillus species (including T. thiooxidans and T. thioparus) are utilized in multiple wastewater treatment applications. 1. Hydrogen Sulfide (H₂S) Removal and Odor Control: Problem Context: H₂S is produced in anaerobic sewage treatment, landfills, and agro-industrial waste Causes foul odors affecting communities near treatment facilities Corrosive to concrete and metal infrastructure Health hazard at high concentrations Thiobacillus Solution (Particularly T. thioparus): Mechanism: Oxidizes H₂S to elemental sulfur and sulfate Reaction: 2H₂S + O₂ → 2S⁰ + 2H₂O (intermediate) Complete oxidation: 2H₂S + 3O₂ → 2H₂SO₄ Efficiency: 80-95% H₂S removal in biofilm reactors Advantages: Biological (non-chemical) approach reduces cost Suitable for small treatment plants with limited budgets Generates no toxic byproducts Sulfur recovery possible (sellable byproduct) Treatment Systems: Biofilm reactors: Thiobacillus grows on carrier media (plastic, ceramic) Biotrickling filters: Wastewater trickles over biofilm-coated packing material Biofiltration towers: Aerated treatment with sulfur collection 2. Heavy Metal Sequestration and Precipitation: Mechanisms (Both T. thiooxidans and T. ferrooxidans): pH-Based Precipitation: Acid production: Thiobacillus oxidation lowers pH initially, then through buffering and co-precipitation produces neutral conditions Metal hydroxide formation: Optimal pH (5.5-7.0) precipitates heavy metal hydroxides Removal efficiency: Zinc: 70-85% removal Copper: 60-75% removal Cadmium: 50-70% removal Biosorption: Cell wall binding: Thiobacillus cells accumulate metals on cell surfaces Intracellular accumulation: Metal sequestration within bacterial cells Capacity: 10-100 mg metal per gram dry biomass 3. Industrial Wastewater Treatment: Mining Wastewater: Acid mine drainage (AMD): High-concentration H₂SO₄, Fe²⁺, Cu²⁺, Zn²⁺ Treatment strategy: Controlled oxidation to precipitate metals; pH adjustment Effectiveness: 40-60% metal removal; water quality improvement for reuse Agricultural Wastewater: Nutrient-rich runoff: Contains nitrogen, phosphorus, sulfur compounds Thiobacillus role: Oxidizes reduced S compounds; supports overall treatment Benefit: Enables nutrient recovery; water reuse in irrigation Agro-Industrial Wastewater (Potato processing, meat processing, etc.): Problem: High H₂S, organic sulfur compounds, heavy metals Solution: Thiobacillus-based biotreatment Outcome: Odor control; partial heavy metal removal; biodegradable organic matter reduction 4. Sewage Sludge Treatment and Land Application Safety: Application Context: Sewage sludge is nutrient-rich (N, P, S) and valuable for agriculture, but often contains heavy metals and pathogens requiring remediation before safe land application. Thiobacillus Treatment: Metal extraction: Bioleaching sewage sludge removes hazardous metals (Zn, Cu, Cr) Extraction rates (T. ferrooxidans): Zinc: 42% of total content Copper: 39% of total content Chromium: 10% of total content Duration: 30-40 days for substantial extraction Outcome: Sludge becomes safe for agricultural application; metals recovered Combined Treatment (Thiobacillus + Biochar): Synergy: Biochar absorbs residual metals; Thiobacillus oxidizes S compounds Results: 60.82% reduction in crop heavy metal contamination Application: Enables sludge-based fertilizer production for organic farming 5. Nutrient Recovery from Wastewater: Sulfur Recovery (T. thiooxidans, T. thioparus): Process: H₂S oxidation produces elemental sulfur Recovery: Sulfur precipitates from solution; collected and sold as byproduct Market value: Elemental sulfur worth $50-150/tonne (depending on purity and quantity) Additional benefit: Treatment cost partially offset by sulfur sales Phosphorus Recovery: Indirect role: Controlled pH enables phosphorus precipitation Synergy: Combined with other microbes (Bacillus spp.) for enhanced recovery Outcome: Recovered phosphate suitable for fertilizer production 6. Treatment System Design and Operation: Biofilm Reactor Parameters: Optimal pH: 5.0-7.0 (alkaline systems) for T. thiooxidans; pH 2.0-4.0 for T. ferrooxidans Temperature: 25-35°C optimal; mesophilic strains used for sewage Aeration: Dissolved oxygen >0.5 mg/L critical; forced aeration or air-diffusion systems Retention time: 2-24 hours depending on pollutant concentration Inoculation: CFU density 10⁶-10⁸ per mL of influent Operational Costs: Capital: $100,000-500,000 for large facility (varies by scale) Operating: $0.50-2.00/m³ treated wastewater Maintenance: Low chemical input; periodic biofilm renewal Advantage: 50-70% cost reduction vs. chemical treatment methods 7. Regulatory Compliance and Environmental Benefits: Treatment Efficacy Meeting Standards: H₂S odor: Reduction from 200+ ppm to <1 ppm (far below odor threshold) Heavy metals: Removal sufficient to meet agricultural reuse standards Organic pollutants: Reduced through concurrent heterotrophic biological treatment Pathogen inactivation: Combined with UV or thermal treatment for complete disinfection Environmental Sustainability: No chemical residues: Biological process generates no persistent synthetic compounds Reduced energy: Lower than thermal treatment or chemical precipitation Byproduct value: Sulfur recovery adds economic benefit Suitable for developing regions: Low-tech, low-cost approach viable with minimal infrastructure Challenges: Process rate: Slower than chemical treatment (hours vs. minutes) Scale limitation: Better suited for medium-sized treatment plants Optimization requirement: Requires process control (pH, aeration, temperature) for consistent performance Conclusion: Thiobacillus bacteria, particularly T. thioparus and T. ferrooxidans, are valuable for wastewater treatment, especially for H₂S removal, heavy metal remediation, and odor control. Their use enables sustainable, low-cost treatment with byproduct recovery potential, making them particularly suitable for sewage, mining, and agro-industrial wastewater applications. Related Products Acidithiobacillus novellus Thiobacillus novellus Thiobacillus thiooxidans More Products Resources Read all

Ut sit amet massa nec ipsum egestas accumsan. Maecenas volutpat magna at metus cursus dignissim. Posted on September 18, 2025 Aliquam ultricies tincidunt nibh, sed volutpat odio posuere non. Sed vitae sem commodo, gravida elit non, euismod elit. Vestibulum at erat sed nunc porttitor mattis nec vel nunc. Etiam nec neque a magna consequat sagittis et at lacus. Curabitur sit amet convallis nulla, a scelerisque ligula. Proin finibus rhoncus ligula, nec commodo lectus rhoncus ac. Vestibulum a est viverra, laoreet eros ac, ullamcorper sem. Vivamus fermentum, ex ac hendrerit pretium, orci lacus tristique leo, a dapibus nisi nisl vel ante. Etiam mattis congue sem, vel commodo metus. Quisque in diam sit amet risus tristique suscipit. Sed eu sapien in eros porttitor dapibus. Nulla volutpat sapien sed velit sodales hendrerit. Donec ac ex nec risus porttitor hendrerit. Praesent gravida, ligula sed interdum gravida, ante urna egestas justo, in varius orci leo in magna. Sed elementum leo et enim interdum malesuada. Aliquam accumsan risus sed mauris luctus, sed tincidunt eros sagittis. Nulla viverra dignissim massa, vel sagittis leo gravida sit amet. Proin luctus libero purus, vitae cursus ante hendrerit vitae. Ut sit amet massa nec ipsum egestas accumsan. Maecenas volutpat magna at metus cursus dignissim. Pellentesque venenatis nisl ut leo volutpat volutpat. Sed ornare a turpis ut finibus. Integer consectetur arcu nisi, eu sagittis orci pretium ac. Quisque dapibus sapien id tortor scelerisque bibendum. Integer eget vulputate magna, sed iaculis leo. Nunc volutpat blandit ullamcorper. Suspendisse mollis vitae ligula at elementum. Vestibulum ac orci sagittis, fermentum ante non, egestas mauris. Donec id libero sit amet purus rhoncus suscipit vel eget magna. Sed aliquet vehicula justo nec efficitur. Cras in ligula non libero maximus viverra in eget leo. # # # About Indogulg BioAg Indogulf BioAg is the dedicated bio-technology division set-up under the Indogulf Group. We are pioneers in the development of biological inoculant, organic fertilizer and mycorrhiza (VAM). Our research & manufacturing facility is located in Salem, a small town in South India that is known for it’s rich underground water that promotes an extensive microbial population, making it an ideal hub for microbial bioscience. # # # Contact +1 437 774 3831 biosolutions@indogulfgroup.com What's New

Leading manufacturer & exporter of Cellulomax, enhancing environmental solutions with innovative, eco-friendly products. < Environmental Solutions Cellulomax Targets cellulose-rich biomass (e.g., cow dung), enhancing soil organic matter and nutrient availability. Converts hard-to-decompose materials into beneficial organic matter. Product Enquiry Download Brochure Benefits Efficient Decomposition of Cellulose-Rich Biomass Cellulomax efficiently decomposes cellulose-rich biomass like cow dung, enhancing soil organic matter content and providing essential nutrients to plants. Environmentally Safe and Biodegradable It poses no harm to the environment and breaks down naturally, supporting sustainable agricultural practices. Approved for Organic Agriculture Cellulomax is approved for use in organic agriculture, meeting stringent standards for organic farming practices. Non-Toxic and Safe for Beneficial Organisms It is safe for parasites, pollinators, and predators, ensuring that the ecosystem remains balanced and healthy. Composition Dosage & Application Additional Info FAQ Composition Components Aspergillus awamori Trichoderma viride Trichoderma reesei Cellulomonas uda Cellulomonas gelida Dosage & Application Add 1L COMPOST PRO to 100 Kg Organic Waste and mix well. Evenly apply the above mix to one Tonne of Organic Waste to convert all types of organic waste into compost/manure rapidly, Apply water to maintain moisture level on regular basis Additional Info Our application rates are for guidelines only. How to use: Shake the bottle well before use. This product should be mixed with clean water in a plastic container as per the dosage instructions and thoroughly mixed before pouring into organic waste. Instructions to open: Open the bottle outdoors with care. Do not shake the bottle before opening. The bottle has a double seal system - an external black cap and a white inner plug with a nozzle in the center. After opening the black outer cap, pierce the inner plug in the middle using any pointed tool. The nozzle should create a small hole through which the liquid fertilizer can pour out. Compatibility: Cellulomax is compatible with Biofertilizers and Biopesticides. Cellulomax is not compatible with chemical pesticides, chemical fungicides, weedicides, herbicides and chemical fertilizers. Handling precautions : Follow normal hygienic and housekeeping standards for agricultural products. Usage and storage: Protect from direct sunlight and store in a dark, cool place between 5 to 25°C (40-77°F). Do not refrigerate or freeze. Keep the container tightly sealed after use. Keep away from children and pets. Do not inhale or ingest. FAQ Content coming soon! Related Products Compost Pro Enriched Earth Enzymax More Products Resources Read all