Molecular mechanisms of selenite reduction by Lactiplantibacillus plantarum BSe: An integrated genomic and transcriptomic analysis.
J Hazard Mater
; 468: 133850, 2024 Apr 15.
Article
em En
| MEDLINE
| ID: mdl-38401219
ABSTRACT
The reduction of selenite [Se(â
£)] by microorganisms is a green and efficient detoxification strategy. We found that Se(â
£) inhibited exopolysaccharide and protein secretion by Lactiplantibacillus plantarum BSe and compromised cell integrity. In this study, L. plantarum BSe reduced Se(â
£) by increasing related enzyme activity and electron transfer. Genomic analysis demonstrated that L. plantarum BSe should be able to reduce Se(â
£). Further transcriptome analysis showed that L. plantarum BSe enhanced its tolerance to Se(â
£) by upregulating the expression of surface proteins and transporters, thus reducing the extracellular Se(â
£) concentration through related enzymatic reactions and siderophore-mediated pathways. Lactiplantibacillus plantarum BSe was able to regulate the expression of related genes involved in quorum sensing and a two-component system and then select appropriate strategies for Se(â
£) transformation in response to varying environmental Se(â
£) concentrations. In addition, azo reductase was linked to the reduction of Se(â
£) for the first time. The present study established a multipath model for the reduction of Se(â
£) by L. plantarum, providing new insights into the biological reduction of Se(â
£) and the biogeochemical cycle of selenium.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Selênio
/
Ácido Selenioso
Idioma:
En
Revista:
J Hazard Mater
Assunto da revista:
SAUDE AMBIENTAL
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
China