Selenium Metabolizing Capabilities of 12 Bacterial Strains Isolated from Urban Environmental Samples.

ABSTRACT: The role of bacterial selenium metabolism in non-polluted environments remains underexplored within the selenium biogeochemical cycle. In this study, selenium-metabolizing bacteria were isolated from urban environmental samples. Among 12 isolates, 10 were identified as Citrobacter spp., while the remaining 2 were Scandinavium hiltneri and Klebsiella aerogenes. The Citrobacter isolates demonstrated high selenium-removal efficiency, removing over 95% of 5 mM selenium from the aqueous phase within one week. In contrast, S. hiltneri K24-1 and K. aerogenes K24-4 removed only 19% and 69%, respectively. A detailed investigation of five representative isolates, C. freundii K21-1, S. hiltneri K24-1, C. braakii K24-2, K. aerogenes

SUBMITTER: Kuroda M 

PROVIDER: S-EPMC12298126 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature