PJB-2021-549
Characterization and effects of rhizobacteria isolated from rhizosphere of rice grown in saline sodic field
Afeefa Maqsood
Abstract
The objective of this research was to isolate the bacteria from the rhizosphere of rice grown in saline sodic soil of Pindi Bhattian and to investigate the effects of these isolates on growth of rice seedlings in pots. Five bacterial strains, Pseudomonas corrugate. Acinetobacter sp. Bacillus sp. Proteobacterium. Exiguobacterium acetylicum were isolated, purified and their colony morphologies were recorded. The isolates were positive for catalase and oxidase tests. These isolates showed antifungal activity against Helminthosporium sativum, Fusarium solani and also exhibit P-soloubilization potential. The isolated strains were sequenced using 16SrRNA. All these isolates were studied for their effects on growth of rice seedling in a pot experiment. Almost all the inoculants showed significant increases in shoot and root dry weight. Isolate Proteobacterium and Exiguobacterium acetylicum were positive for P solubilizing potential and can also be used for P deficient soil or unstressed soil where P is fixed and becomes unavailable to plants.
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