Novel Microorganisms Contribute to Biosulfidogenesis in the Deep Layer of an Acidic Pit Lake.

ABSTRACT: Cueva de la Mora is a permanently stratified acidic pit lake with extremely high concentrations of heavy metals at depth. In order to evaluate the potential for in situ sulfide production, we characterized the microbial community in the deep layer using metagenomics and metatranscriptomics. We retrieved 18 high quality metagenome-assembled genomes (MAGs) representing the most abundant populations. None of the MAGs were closely related to either cultured or non-cultured organisms from the Genome Taxonomy or NCBI databases (none with average nucleotide identity >95%). Despite oxygen concentrations that are consistently below detection in the deep layer, some archaeal and bacterial MAGs mapped transcripts of genes for sulfide oxidation coupled with oxygen reduction. Among these microae

SUBMITTER: Ayala-Munoz D 

PROVIDER: S-EPMC9326234 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature