Abstract
This study was aimed to evaluate eggplant's growth-enhancing activity of chlorpyrifos and diazinon-degrading endophytic and rhizospheric soil bacteria isolated from cauliflower and tomato roots and the rhizospheric soil of rice roots, respectively. The identified endophytes belong tothe Acinetobacter,Enterobacter andKlebsiellagenera, while rhizospheric soil isolates belong toPantoea,Acinetobacter,Kosakonia,Morganella,Enterobacter, andKlebsiellagenera with species variation and genetic distances. All the strain's consumed 100% (50mg/5mL) chlorpyrifos and diazinon after 14days of exposure, except forPantoeasp. HSTU-Sny4 (84%) andKosakoniasp. HSTU-ASn39 (42%). The strain's exhibited N-fixation, P-solubilization, indole-3-acetic acid (IAA), and ACC-deaminase production capabilities. The individual strain's and consortium treatment enhanced eggplant growth at germination, seedling, vegetative and reproductive stages. Plant growth-promoting genes, e.g., nif-cluster, chemotaxis, phosphates, sulfur, abiotic stress, chemotaxis, biofilm formation and organophosphorus insecticide-degrading genes were annotated inKlebsiellasp. HSTU-Sny5 andMorganellasp. HSTU-ASny43 genomes. Importantly, the mixed consortium supplemented with 40% urea-treated eggplants demonstrated similar growth parameters compared to the 100% urea eggplants. Plenty of insecticide-degrading proteins belonged to HSTU-Sny5 andHSTU-ASny43 strain's and had interacted with 100 different insecticides as confirmed in virtual screening. This research has a significant role in reducing the application of chemical fertilizer and bioremediation of pesticides in agriculture.
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