Biodegradation of sodium selenite by a highly tolerant strain <i>Rhodococcus qingshengii</i> PM1: Biochemical characterization and comparative genome analysis.

ABSTRACT:

Background

Rhodococcus is an important genus of soil bacteria known for its metabolic diversity and environmental adaptability under harsh and contaminated conditions. However, few studies have reported on the selenium metabolism of Rhodococcus species.

Results

Here, we isolated a highly selenite-resistance strain PM1 (up to 100 mM) from a selenium-rich mine in Enshi City. This strain reduced 50 mM sodium selenite by 99 % within 72 h. SEM and XPS revealed that PM1 reduced selenite to selenium nanorods (SeNRs). Phylogenetic analysis identified PM1 as R. qingshengii. The whole genome of strain PM1 was sequenced, and a comparative genome analysis of strain PM1with 64 other genomes of Rhodococcus was performed. Whole genome sequencing identified a tot

SUBMITTER: Wang Z 

PROVIDER: S-EPMC12264630 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature