Pseudomonas striata
Pseudomonas striata improves soil health, enhances root systems, increases plant drought tolerance, optimizes soil nutrition for sustained crop productivity. Compatible with bio-pesticides and bio-fertilizers.
Strength
1 x 10⁸ CFU per gram / 1 x 10⁹ CFU per gram
Benefits
Improves Soil and Plant Health
Enhances both soil fertility and plant vigor, leading to healthier crops.
Enhances Root System
Promotes the development of robust root systems, improving nutrient and water uptake.
Increases Plant Tolerance to Stress
Boosts plant resilience to environmental stresses like drought and disease.
Promotes Sustainable Agriculture
Supports sustainable farming practices by reducing the need for chemical inputs and enhancing soil biodiversity.
FAQ
1. What is Pseudomonas striata?
Pseudomonas striata is a soil bacterium known for its ability to solubilize phosphate and promote plant growth. It is commonly used as a biofertilizer and biocontrol agent in sustainable agriculture.
2. How does P. striata make phosphorus more available to plants?
It releases organic acids such as tartaric, gluconic, and citric acids that break down insoluble phosphate compounds in the soil, converting them into forms plants can absorb (Gaind, 2013).
3. Does P. striata improve plant growth?
Yes. It produces the plant hormone indole-3-acetic acid (IAA), enhances nutrient uptake, and increases root and shoot biomass in crops like soybean, pearl millet, and mungbean (Dubey, 1996), (Khan et al., 2016).
4. Can it control plant pests or diseases?
Yes. P. striata culture filtrates can suppress nematodes like Meloidogyne javanica, reducing egg hatch by up to 95%, making it a promising biocontrol agent (Ansari et al., 2002).
5. Is P. striata safe and environmentally friendly?
Yes. It is naturally occurring in soils and supports eco-friendly farming by reducing reliance on chemical fertilizers and pesticides.
6. Does P. striata have industrial applications?
It produces enzymes like amidases and amino acid racemases that can degrade organic pollutants and may be useful in biodegradation and biochemical processing (Hsiung et al., 1975).
Scientific References
1. Phosphorus Solubilization & Soil Fertility Enhancement
P. striata solubilizes phosphate by producing organic acids like tartaric and gluconic acid, and also produces extracellular phytase and indole-3-acetic acid (IAA), enhancing phosphorus availability and plant growth in pearl millet. Gaind, 2013 – Journal of Crop Improvement
Application of P. striata with rock phosphate significantly increased phosphorus uptake and yield in soybean, suggesting cost-effective alternatives to chemical fertilizers. Dubey, 1996 – Journal of the Indian Society of Soil Science
2. Plant Growth Promotion
Inoculation with P. striata enhances root and shoot biomass, nutrient uptake, and productivity in crops like sorghum and mungbean, especially in phosphorus-deficient soils. Saxena & Mohan, 2010 – Field trial study
Combined inoculation with Piriformospora indica and P. striata showed synergistic effects on chickpea biomass, though phosphorus uptake remained unaffected. Meena et al., 2010 – Biology and Fertility of Soils
3. Biocontrol & Nematode Suppression
Culture filtrates of P. striata reduced egg hatch of the root-knot nematode Meloidogyne javanica by up to 95%, suggesting strong nematicidal potential. Ansari et al., 2002 – Laboratory study
P. striata also suppressed nematode infections in mungbean and improved nodulation and nutrient uptake in synergy with Bradyrhizobium. Khan et al., 2016 – Biological Control
4. Enzymatic Activity & Biochemical Potential
P. striata produces amino acid racemases and amidases capable of breaking down compounds like acetanilide into aniline and acetic acid, indicating use in biodegradation. Hsiung et al., 1975 – Biochemical and Biophysical Research Communications
Enzyme studies revealed broad-substrate amino acid racemase activity, with potential in biochemical conversions. Roise et al., 1984 – Biochemistry
5. Environmental Monitoring & Biosensing
P. striata was used in developing zinc-selective membrane biosensors due to its cell membrane sensitivity to metal ions. Datta et al., 2009 – Indian Journal of Science and Technology
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Mode of Action
Phosphate Solubilization
P. striata secretes organic acids like tartaric, gluconic, citric, and malic acids that chelate calcium and release bound phosphorus from insoluble forms (like tricalcium and rock phosphate), making it available for plant uptake. It also produces extracellular phytase, which helps mineralize organic phosphate (Gaind, 2013).
2. Plant Growth Promotion
The bacterium produces indole-3-acetic acid (IAA), a phytohormone that promotes root elongation and plant biomass. Its growth-promoting effect has been observed in crops like soybean, pearl millet, chickpea, and mungbean (Dubey, 1996), (Meena et al., 2010).]
3. Biocontrol of Soil Pathogens
P. striata produces metabolites that suppress root-knot nematodes (Meloidogyne spp.), significantly reducing egg hatching and juvenile survival. This makes it a potential eco-friendly nematicide (Ansari et al., 2002), (Khan et al., 2016).
4. Enzyme Production and Biodegradation
The bacterium synthesizes enzymes such as:
Aryl amidases, which hydrolyze compounds like acetanilide into aniline and acetic acid, useful in organic pollutant degradation (Hsiung et al., 1975).
Amino acid racemases, which catalyze D/L amino acid interconversion, showing promise in biochemical applications (Roise et al., 1984).
5. Rhizosphere Colonization
P. striata establishes well in the rhizosphere, maintaining populations throughout plant growth stages even under varying fertilizer levels, ensuring sustained benefits to plants (Rajkumar et al., 2008).
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: 1 kg of seeds will be coated with a slurry mixture of 10 g of Pseudomonas striata and 10 g of crude sugar in sufficient water. The coated seeds will then be dried in shade and sow or broadcast in the field.
Seedling Treatment: Dip the seedlings into the mixture of 100 grams of Pseudomonas striata and sufficient amount of water.
Soil Treatment: Mix 3-5 kg per acre of Pseudomonas striata with organic manure/organic fertilizers. Incorporate the mixture and spread into the field at the time of planting/sowing.
Irrigation: Mix 3 kg per acre of Pseudomonas striata in a sufficient amount of water and run into the drip lines.
