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Plant growth promotion of rice as influenced by Ochrobactrum sp. (MH685438) a Rhizospheric bacteria associated with Oryzae Sativa

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Plants subjected to different environmental stresses, of which drought is a major abiotic stress constraint for crop production. Current study, investigated the adverse effects of drought stress on growth and modulation of root system architecture of rice inoculated with drought-tolerant bacteria Ochrobactrum sp. (MH685438). Polyethylene glycol (PEG) solutions of different concentrations (5%, 10%, 15%, 20%, 25% & 30%) were used for drought stress induction artificially. It was observed that growth of bacteria significantly reduced under drought stress, while maximum reduction was caused by PEG (30%) applied. Drought-tolerant bacteria Ochrobactrum sp. (MH685438) identified based on 16S rDNA gene sequence was used to study the effect on drought stress tolerance of rice growth. Rice plants inoculated with Ochrobactrum sp. (MH685438) showed potential to withstand the drought upto 30 % of PEG, also increased the plant shoot and root length when compared to control. The bacterium also improved the germination percentage of rice seeds at different concentration of PEG 6000. Current investigation concluded that application of Ochrobactrum sp. (MH685438) may increase the tolerance capacity of crop plants especially rice against drought. | Plant growth promotion of rice as influenced by Ochrobactrum sp. (MH685438) a Rhizospheric bacteria associated with Oryzae Sativa

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