Interactions between Biotite and the Mineral-Weathering Bacterium Pseudomonas azotoformans F77.

ABSTRACT: In this study, the mineral-weathering bacterium Pseudomonas azotoformans F77, which was isolated from the soil of a debris flow area, was evaluated for its weathering activity under direct contact with biotite or without contact. Then, biotite-weathering behaviors of strain F77, mutants that had been created by deleting the gcd and adh genes (which are involved in gluconic acid metabolism and pilus formation, respectively), and the double mutant F77ΔgcdΔadh were compared. The relative gene expression levels of F77 and its mutants F77Δgcd and F77Δadh were also analyzed in the presence of biotite. Direct contact with biotite increased Fe and Al release from the mineral in the presence of F77. All strains had similar abilities to release Fe and

SUBMITTER: Wang YL 

PROVIDER: S-EPMC7082585 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature