Influence of Kosakonia sp. on the Growth of Arachis hypogaea L. on Arid Soil

The current study focused on enumerating the potential plant growth-promoting rhizobacteria (PGPR) from rhizosphere of Arachis hypogaea L. Among several colonies grown an Ashby plate, only seven isolates (Ah1 to Ah7) had nitrogen-fixing potential. Ah4 isolate showed higher for (PGP) activities than other isolates. This was recognized as Kosakonia sp. MGR1 through 16S rRNA sequencing with 99.7% similarity genus and 61% match K. cowanii in phylogenetic tree analysis. produce excellent quantity (26.17 µg·mL−1) indole-3-acetic acid (IAA) 6% tryptophan-enriched media concentrations (2%, 4%, 8%, 10%). Additionally, it contained remarkable phosphate-solubilizing efficiency tricalcium phosphate (29.3 5 days incubation. growth conditions were optimized 35 °C, pH 7.5, 48 h incubation glucose. produced 96.35 ± 3.45, 89.6 5.61, 99.21 5.24 µg·mL−1 IAA, nitrogen, soluble phosphate, respectively. Furthermore, enhance biomolecule contents A. results concluded that admirable PGP activities; hence, a significant impact active biomolecules