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Plant Growth-Promoting Rhizobacteria (PGPR)
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Azospirillum brasilense
Enhances root growth, nitrogen fixation, and phytohormone production
Rhizobium leguminosarum
Nodule formation on legumes, nitrogen fixation, improves soil fertility
Pseudomonas fluorescens
Suppresses soil pathogens, enhances phosphorus solubilization, induces systemic resistance in plants
Bacillus subtilis
Promotes plant growth, stimulates the immune system, and helps in biocontrol
Azotobacter chroococcum
Involved in nitrogen fixation, secretes growth-stimulating substances, enhances soil nutrient availability
Paenibacillus polymyxa
Improves nutrient uptake, produces antibiotics and enzymes, promotes root growth
Streptomyces griseoviridis
Biocontrol agent against fungal pathogens, enhances plant immune response, biofertilizer properties
Mycobacterium phlei
Promotes seed germination and plant growth, increases the bioavailability of phosphorus, enhances beneficial soil microbe populations
Azotobacter vinelandii
Involved in biological nitrogen fixation, secretes growth-promoting substances, enhances soil fertility
Gluconacetobacter diazotrophicus
Endophytic nitrogen fixation, promotes sugarcane and coffee plant growth, produces organic acids which solubilize phosphates
Bacillus megaterium
Phosphate solubilizing, produces plant growth-promoting hormones, increases plant nutrient absorption efficiency
Serratia marcescens
Produces plant growth regulators, improves plant resistance to stress, helps in iron chelation
Nitrobacter winogradskyi
Facilitates the nitrification process by converting nitrite to nitrate, plays a key role in nitrogen cycle, promotes healthier plant growth
Arthrobacter globiformis
Phosphate solubilization, degradation of soil pollutants, stimulates plant stress tolerance
Enterobacter aerogenes
Phosphate solubilizing, enhances root growth, produces plant growth-promoting substances
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