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Microbial Species
Explore Our Library of Beneficial Microbes
Unlock the potential of your soil with our carefully selected microbial strains, engineered to enhance nutrient availability, promote plant growth, and suppress harmful pathogens, ensuring healthier crops and improved yields.
Features of Our Species Directory
Diverse Catalog
Over 100 industrially important microbial strains, including nitrogen-fixers, phosphate solubilizers, biocontrol agents, probiotics, and more.
Mechanistic Details
In-depth explanation of how each microbe interacts with plants or the environment (enzyme production, hormone stimulation, pathogen antagonism, etc.).
Application Guidance
Recommendations for use-cases and industries – which crops, soil conditions, or contamination issues each strain is best suited for.
Research & Compliance
Key literature references and regulatory status (such as OMRI-listed for organic use) provided for each species, ensuring you trust its proven performance.
Regular Updates
Continuously updated with new strains and the latest scientific findings as our R&D expands the frontier of microbial technology.
Segments We Focus On
Nitrogen Fixing Bacteria
Nitrogen-fixing bacteria are naturally occurring microorganisms central to the nitrogen cycle. They convert inert atmospheric nitrogen (N₂) — a form plants cannot use directly — into bioavailable ammonia (NH₃) and ammonium (NH₄⁺) through a process called biological nitrogen fixation. Depending on the species, this happens inside plant root nodules (symbiotic strains like Rhizobium and Bradyrhizobium), independently in the soil (free-living strains like Azotobacter), around plant roots (associative strains like Azospirillum), or inside plant tissue itself (endophytic strains like Gluconacetobacter). The result is improved soil fertility, less reliance on synthetic nitrogen fertilizer, and a more sustainable path to consistent yields.
IndoGulf BioAg develops non-GMO nitrogen-fixing bacterial strains across all four of these categories, each formulated and quality-tested for specific crops and application methods — from seed treatments for legumes to soil-applied inoculants for cereals and row crops. The sections below cover the science behind how these bacteria work, the field-level benefits they deliver, and how to apply them.
IndoGulf BioAg develops non-GMO nitrogen-fixing bacterial strains across all four of these categories, each formulated and quality-tested for specific crops and application methods — from seed treatments for legumes to soil-applied inoculants for cereals and row crops. The sections below cover the science behind how these bacteria work, the field-level benefits they deliver, and how to apply them.
Phosphorous Solubilizing Bacteria
Phosphorous Solubilizing Bacteria convert insoluble phosphates into soluble forms that plants can absorb, improving phosphorus availability and promoting stronger root development.
Potash Solubilizing Bacteria
Potash Solubilizing Bacteria convert insoluble potassium compounds in the soil into forms that plants can absorb, improving potassium availability and supporting plant metabolic processes.
Sulphur Solubilizing Bacteria
Sulphur-solubilizing bacteria convert elemental sulphur and other reduced sulphur compounds into plant-available sulphate, supporting soil sulphur cycling and crop nutrition under suitable conditions.
Silica Solubilizing Bacteria
Silica Solubilizing Bacteria make silica available to various plants by converting insoluble forms into readily absorbable forms, which can significantly enhance plant strength, growth, and resistance to environmental stress.
Manganese Solubilizing Bacteria
Manganese Solubilizing Bacteria make manganese more available to plants by converting insoluble forms into absorbable forms, aiding in chlorophyll production and other vital functions.
Iron Solubilizing Bacteria
Iron-solubilizing bacteria are a functional group of microorganisms that can influence the mobility and biological availability of iron in the root zone. Depending on the strain and environmental conditions, they may act through siderophore production, rhizosphere acidification, organic metabolites or iron-reduction processes.
Biocontrol
Biocontrol is the use of beneficial natural organisms to control agricultural pests and diseases, such as root nematodes, powdery mildew, and whiteflies. By minimizing the reliance on chemical pesticides, biocontrol promotes sustainable farming practices, enhances soil health, and protects the environment.
Biofungicides
Biofungicides are effective biological agents that specifically control various fungal diseases in plants, significantly reducing the incidence of infections and promoting healthier, more resilient agricultural crops.
Larvicides
Larvicides are highly effective solutions for managing the larval stages of harmful pests in agriculture and public health. By targeting larvae directly, larvicides disrupt pest life cycles, reducing populations and minimizing damage to crops and the environment. These products offer a sustainable and precise alternative to broad-spectrum pesticides, especially when integrated with environmentally conscious farming practices.
Bionematicides
Bionematicides are innovative biological agents designed to control plant-parasitic nematodes (PPNs) in agricultural soils. These products work by targeting nematodes ( i.e root knot nematodes) directly or improving the resilience of crops against nematode attacks. By protecting plant roots, bionematicides help enhance crop health, boost yields, and promote sustainable farming practices.
Unlike traditional chemical nematicides, bionematicides are derived from naturally occurring microorganisms—such as nematophagous fungi and beneficial bacteria—or bioactive compounds from plants and microbes. These agents offer an eco-friendly, residue-free alternative, making them a vital part of modern integrated pest management (IPM) systems.
Unlike traditional chemical nematicides, bionematicides are derived from naturally occurring microorganisms—such as nematophagous fungi and beneficial bacteria—or bioactive compounds from plants and microbes. These agents offer an eco-friendly, residue-free alternative, making them a vital part of modern integrated pest management (IPM) systems.
Antifeedant
Antifeedants are natural or synthetic substances that deter pests from feeding on plants by making the plants unpalatable or toxic to them, thus effectively protecting crops from damage.
Post Harvest Treatment
Post Harvest Treatments involve biological or chemical methods applied to harvested crops to prevent spoilage, extend shelf life, and maintain quality during storage and transportation.
Denitrification
Denitrification is a complex microbial process that plays a central role in the nitrogen cycle, facilitating the transformation of nitrates (NO₃⁻) and nitrites (NO₂⁻) into gaseous forms such as nitrogen gas (N₂), nitric oxide (NO), and nitrous oxide (N₂O). This reduction process is carried out predominantly by facultative anaerobic bacteria under oxygen-limited (anoxic) conditions.
The pathway involves multiple enzymatic steps mediated by specialized enzymes, each catalyzing a specific reduction reaction:
Nitrate reductase (Nar or Nap): Reduces nitrate (NO₃⁻) to nitrite (NO₂⁻).
Nitrite reductase (Nir): Converts nitrite to nitric oxide (NO).
Nitric oxide reductase (Nor): Reduces NO to nitrous oxide (N₂O).
Nitrous oxide reductase (Nos): Converts N₂O to dinitrogen gas (N₂), completing the process.
The pathway involves multiple enzymatic steps mediated by specialized enzymes, each catalyzing a specific reduction reaction:
Nitrate reductase (Nar or Nap): Reduces nitrate (NO₃⁻) to nitrite (NO₂⁻).
Nitrite reductase (Nir): Converts nitrite to nitric oxide (NO).
Nitric oxide reductase (Nor): Reduces NO to nitrous oxide (N₂O).
Nitrous oxide reductase (Nos): Converts N₂O to dinitrogen gas (N₂), completing the process.
Bio Compost Degrading
Bio Compost Degrading microorganisms accelerate the decomposition of organic matter in compost, enhancing the production of nutrient-rich compost for use in soil improvement and plant growth.
Plant Growth Promoters
Plant Growth Promoters products, often containing beneficial microorganisms or natural compounds, promote overall plant health and development, enhancing growth rates and crop yields.
Probiotics
We provide diverse bacterial and yeast probiotic strains sourced from natural habitats. Available in individual forms or ready-to-fill blends, our probiotics range from 5 billion to 200 billion CFU/g, supporting gut health for humans and animals.
Bioremediation
Bioremediation is an eco-friendly process that uses microorganisms to break down or neutralise pollutants in soil, water, and air. By harnessing the natural metabolic processes of bacteria, fungi, and other microbes, bioremediation helps clean up contaminants such as oil spills, heavy metals, and industrial waste, making it an effective solution for environmental restoration.
Arbuscular Mycorrhizal Fungi
Arbuscular mycorrhizal fungi (AMF) establish mutualistic associations with the roots of approximately 80% of terrestrial plant species. Through an extensive extraradical hyphal network, AMF significantly expand the absorptive surface area of root systems, facilitating enhanced uptake of essential nutrients—particularly phosphorus, nitrogen, and micronutrients—beyond the depletion zones of roots. In addition to nutrient acquisition, AMF play a key role in improving plant tolerance to abiotic stresses such as drought, salinity, and heavy metal toxicity by modulating physiological responses and maintaining water balance.
At the ecosystem level, AMF contribute to soil aggregation and long-term fertility by secreting glomalin and stabilizing soil particles. This symbiosis forms a foundational component of belowground biodiversity and function, offering a biologically-driven pathway to improved plant performance and soil resilience in both natural and managed systems.
At the ecosystem level, AMF contribute to soil aggregation and long-term fertility by secreting glomalin and stabilizing soil particles. This symbiosis forms a foundational component of belowground biodiversity and function, offering a biologically-driven pathway to improved plant performance and soil resilience in both natural and managed systems.
Balance Your Soil with Beneficial Microbes
Unlock the potential of your soil with our carefully selected microbial strains, engineered to enhance nutrient availability, promote plant growth, and suppress harmful pathogens. Our proprietary formulations ensure healthier crops and improved yields across diverse agricultural settings.
Soil Nutrient Solubilizers
Nitrogen Cyclers
Plant Growth Promoters & Biocontrol Agents
Fungal Activators & Biocontrol
FAQ
FAQ
What are microbial strains used for?
Microbial strains are applied as biofertilizers, biopesticides, and soil conditioners. They enhance nutrient cycling, suppress pathogens, and stimulate plant growth by producing hormones and solubilizing minerals.
How do microbial strains help in agriculture?
By fixing atmospheric nitrogen, solubilizing phosphorus and iron, decomposing organic waste, and out-competing soil pathogens, microbial strains improve nutrient availability, crop health, and yield stability.
Are microbial strains safe for organic farming?
Yes. All our microbial products are approved for organic agriculture. They are naturally derived, non-toxic, and free of synthetic chemicals, aligning with sustainable and eco-friendly farming practices.
What are examples of microbial strains?
Common examples include Azospirillum brasilense (nitrogen fixer), Bacillus amyloliquefaciens (plant growth promoter), and Ampelomyces quisqualis (biocontrol of powdery mildew).
Nitrogen Cyclers
Alcaligenes denitrificans
Performs denitrification, reducing nitrates (NO₃⁻) to nitrogen gas (N₂) in anoxic zones. Ideal for mitigating nitrate pollution in runoff and wastewater.
Azospirillum brasilense & Azospirillum lipoferum
Nitrogen-fixing bacteria that colonize cereal roots to improve nutrient uptake, root development, and yields by up to 29% under optimized conditions.
Azotobacter vinelandii
A free-living diazotroph that enhances soil nitrogen levels for non-legumes, reducing dependence on synthetic fertilizers.
Plant Growth Promoters & Biocontrol Agents
Bacillus amyloliquefaciens
Produces auxins and lytic enzymes to stimulate growth and suppress soil-borne pathogens. Safe for non-targets.
Bacillus circulans
Solubilizes phosphorus and synthesizes indoleacetic acid for improved root growth and stress tolerance.
Bacillus firmus
Enhances phosphorus availability, stimulates fruit quality, and provides barrier protection against nematodes.
Soil Nutrient Solubilizers
Acidithiobacillus ferrooxidans
A biofertilizer that solubilizes iron, making it available in iron-deficient soils and boosting chlorophyll synthesis.
Acidithiobacillus novellus
Oxidizes sulfur, improving sulfur availability and correcting deficiencies to increase yield and plant health.
Acidithiobacillus thiooxidans
Converts elemental sulfur and sulfide minerals into sulfate. Its acidophilic nature also aids in bioremediation of acid mine drainage and heavy-metal neutralization.
Fungal Activators & Biocontrol
Ampelomyces quisqualis
A mycoparasitic fungus targeting powdery mildew. It infects pathogen reproductive structures, reducing disease spread without chemical fungicides.
Aspergillus awamori, A. niger & A. oryzae
Produce a suite of enzymes (cellulases, amylases, proteases) to accelerate composting, improve soil organic matter breakdown, and support bioremediation of pollutants.
Our Products
Acetobacter xylinum
Acetobacter xylinum is a beneficial bacterium known for producing bacterial cellulose, a biopolymer with valuable applications in agriculture. Its presence in soil enhances plant growth and resilience by improving soil structure, increasing moisture retention, and enhancing nutrient availability. These benefits are especially valuable in arid and challenging environments.
Acidithiobacillus ferrooxidans
Acidithiobacillus Ferrooxidans acts as a biofertilizer, enhancing nutrient availability by solubilizing soil iron, crucial for plants in iron-deficient soils.
Acidithiobacillus novellus
Acidithiobacillus novellus sulfur oxidation in soil, improving nutrient availability for crops, particularly aiding in sulfur deficiency in soils, thereby boosting yield and plant health.
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. 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.
Alcaligenes denitrificans
Alcaligenes denitrificans is a denitrifying bacterium that plays a crucial role in the nitrogen cycle. It reduces nitrates (NO₃⁻) to nitrogen gas (N₂) under anoxic conditions, effectively mitigating nitrate pollution in agricultural runoff and wastewater. This bacterium is also utilized in bioremediation projects to address nitrogen-related contamination, contributing to sustainable water management and soil health. Its activity helps balance nitrogen levels, reducing environmental impacts and supporting ecosystem stability.
Ampelomyces quisqualis
Ampelomyces quisqualis is a mycoparasitic fungus widely known for its ability to parasitize powdery mildew fungi, making it an important biological control agent in agriculture. It infects and disrupts the reproductive structures of powdery mildew pathogens, reducing their spread and impact on crops.
This fungus thrives on a variety of host plants, providing eco-friendly and sustainable solutions for managing powdery mildew in fruits, vegetables, and ornamental plants. Its natural mode of action minimizes the need for chemical fungicides, supporting integrated pest management strategies and promoting environmental health.
This fungus thrives on a variety of host plants, providing eco-friendly and sustainable solutions for managing powdery mildew in fruits, vegetables, and ornamental plants. Its natural mode of action minimizes the need for chemical fungicides, supporting integrated pest management strategies and promoting environmental health.
Aspergillus awamori
Aspergillus awamori solubilizes unavailable phosphorus in acidic soil, enhancing plant nutrient uptake and drought resistance. Restores soil fertility through organic matter breakdown.
Aspergillus niger
Aspergillus niger is a beneficial filamentous fungus widely used in agriculture for its ability to produce enzymes that enhance composting and improve soil fertility. Known for breaking down organic matter through enzymes - cellulases, amylases, and pectinases, Asp. niger accelerates the decomposition of agricultural waste into nutrient-rich compost. This compost acts as a natural fertilizer, enriching the soil with essential nutrients, improving its structure, and promoting water retention. Additionally, Asp. niger contributes to bioremediation by degrading harmful chemicals and pollutants, making it an eco-friendly solution for sustainable waste management. As a fungal activator, it plays a crucial role in integrated pest management by indirectly suppressing soil-borne pathogens and pests, fostering healthier and more resilient crops.
Aspergillus oryzae
Aspergillus oryzae is a filamentous fungus widely utilized in industrial and agricultural applications due to its enzymatic versatility. It plays a crucial role in food and beverage fermentation by producing amylases, cellulases, and proteases, which catalyze the breakdown of complex carbohydrates and proteins. In agriculture, A. oryzae is integral to composting processes, where its enzymatic activity accelerates the decomposition of organic matter, enhancing nutrient cycling and improving soil fertility. The ability of A. oryzae to convert agricultural waste into nutrient-rich compost makes it a critical component of sustainable farming practices and organic waste management, bridging industrial biotechnology and eco-friendly agricultural and environmental solutions.
Azospirillum brasilense
Azospirillum brasilense is a root-associated, nitrogen-fixing bacterium widely studied for use in microbial inoculants and biofertilizer formulations.
Selected strains have been investigated for biological nitrogen fixation, root development, nutrient uptake and nitrogen-use efficiency, particularly in maize, wheat and other cereal crops.
IndoGulf BioAg supplies Azospirillum brasilense in concentrated microbial formats for agricultural formulation, bulk supply and private-label development.
Azospirillum lipoferum
In agriculture Azospirillum lipoferum is used to promote root development and nitrogen fixation in various crops, leading to enhanced growth and higher agricultural productivity.
Azospirillum spp.
Azospirillum spp. a nitrogen fixing bacteria in agriculture to enhance plant growth and commonly applied to roots of cereals and grasses to improve yield.
Azotobacter vinelandii
Azotobacter vinelandii is a free-living nitrogen-fixing bacterium that supports crop growth by helping convert atmospheric nitrogen into forms plants can use. Because it works in the root zone without requiring a legume host, it is especially useful for non-leguminous crops such as cereals, vegetables, maize, sugarcane, and other field crops. By improving biological nitrogen availability in the soil, Azotobacter vinelandii can help support healthier root development, stronger plant vigour, better nutrient efficiency, and more sustainable nitrogen management.
Bacillus amyloliquefaciens
Bacillus amyloliquefaciens, produces plant growth hormones, suppresses pathogens with enzymes, acts as biofertilizer and biopesticide, improves soil fertility, safe for non-target species and humans.
Bacillus azotoformans
Used as seed inoculant, enhances germination and root development, improves water and nutrient transport, environmentally safe.
Bacillus azotoformans
Used as seed inoculant, enhances germination and root development, improves water and nutrient transport, environmentally safe.
Bacillus circulans
Bacillus circulans produces indoleacetic acid, solubilizes phosphorus improving absorption, enhances plant growth and yield, safe and eco-friendly.
Bacillus firmus
Bacillus firmus enhances phosphorus availability in soil, stimulates root growth, improves fruit quality, and protects against soil-borne diseases. Compatible with bio-pesticides and bio-fertilizers.
For personalized advice on the best strains for your needs, contact our technical team for expert support.
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