Ensifer adhaerens for heavy metal bioaccumulation, biosorption, and phosphate solubilization under metal stress condition

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In this study, a bacterial strain was recovered from the chickpea root surface and its heavy metal tolerance ability, bioaccumulation, biosorption, chromium reduction potential, and phosphate solubilization activity were determined. Bacterial strain (OS3) was molecularly characterized through 16S rRNA partial gene sequencing and confirmed strain sequences belonged to the Ensifer adhaerens, inveterate by the BLASTn and phylogenetic analysis and achived accession number from Genbank# HE681418. 1. Strain OS3 was able to tolerate up to 250 µg/ml Cd, 500 µg/ml Cr, 800 µg/ml each of Cu and Zn and 1000 µg/ml Ni. Moreover, strain OS3 was able to bioaccumulate and biosorb varying concentrations of heavy metals and showed maximum accumulation of Ni (95%) and least accumulation of Pb (74%) at a temperature of 34° C and pH 7. The Langmuir and Freundlich adsorption

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