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Streptomyces corchorusii strain UCR3-16, obtained from rice rhizospheric soils showed antifungal activities against 6 major rice fungal pathogens by diffusible and volatile compounds production. The strain was found positive for production of fungal cell wall degrading enzymes such as chitinase, β-1,3-glucanase, β-1,4-glucanase, lipase and protease.

The strain was also positive for plant growth promoting traits. It produced up to 30.5 μg/ml of IAA and solubilized a significant amount of inorganic phosphate (up to 102 μg/ml). It also produced 69% siderophore units. The strain also produced ammonia and gave positive result for ACC deaminase activity.

Highest vigor index of inoculated seedlings was observed when rice seeds were treated with cell suspension of UCR3-16 corresponding to 4.5 × 10⁸ cfu/ml. Bioinoculant-treated seeds also showed similar results under pathogen challenged conditions. In pot trial …