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The application of plant growth-promoting rhizobacteria (PGPR) is one of the most promising alternative approaches to improve plant growth under salt stress. Among PGPR, Pseudomonas is a bacterial genus that possesses a variety of mechanisms for plant-growth-promoting and induction of biotic as well as abiotic stress tolerance. In this study, we screened three potential strains and tested the growth promotion of peanut (Arachis hypogaea) under saline conditions. All three isolates (strains) showed in vitro plant growth promoting traits such as the production of indoleacetic acid (IAA), phosphate solubilization, and nitrogen fixation. Moreover, the 3 isolates present gene encoding ACC deaminase, and an important enzyme can promote plant growth to ameliorate abiotic stresses. Peanut inoculated with the strain BT00P03 showed the increase in fresh shoot biomass in normal and saline stress conditions. Our results showed that the BT00P03 strain might be used as a biological agent for eco-friendly agricultural practices. This research is the first step to understand the microbe-plant interaction mechanism under stress and to apply these strains to agricultural practices in the future. |
