A novel Azotobacter vinellandii (SRIAz3) functions in salinity stress tolerance in rice

The plant growth promoting rhizobacteria (PGPRs) as a biofertilizer provide agricultural benefits to advance various crops productivity. Recently, we discovered a novel Azotobacter vinellandii (SRI Az 3) from rice rhizosphere, which is well competent to improve rice productivity. In this study, we i...

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Published in:Plant signaling & behavior 2014-05, Vol.9
Main Authors: Sahoo, Ranjan Kumar, Ansari, Mohammad Wahid, Pradhan, Madhusmita, Dangar, Tushar K, Mohanty, Santanu, Tuteja, Narendra
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container_title Plant signaling & behavior
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Ansari, Mohammad Wahid
Pradhan, Madhusmita
Dangar, Tushar K
Mohanty, Santanu
Tuteja, Narendra
description The plant growth promoting rhizobacteria (PGPRs) as a biofertilizer provide agricultural benefits to advance various crops productivity. Recently, we discovered a novel Azotobacter vinellandii (SRI Az 3) from rice rhizosphere, which is well competent to improve rice productivity. In this study, we investigated a role of A. vinellandii to confer salinity tolerance in rice (var. IR64). A. vinellandii inoculated rice plants showed higher proline and malondialdehyde content under 200 mM NaCl stress as compared with uninoculated one. The endogenous level of plant hormones viz., indole-3 acetic acid (IAA), gibberellins (GA 3 ), zeatint (Zt) was higher in A. vinellandii inoculated plants under high salinity. The fresh biomass of root and shoot were relatively elevated in A. vinellandii inoculated rice. Further, the macronutrient profile was superior in A. vinellandii inoculated plants under salinity as compared with non-inoculated plants. The present findings further suggest that A. vinellandii , a potent biofertilzer, potentially confer salinity stress tolerance in rice via sustaining growth and improving compatible solutes and nutrients profile and thereby crop improvement.
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title A novel Azotobacter vinellandii (SRIAz3) functions in salinity stress tolerance in rice
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