Genomic evidence for sulfur intermediates as new biogeochemical hubs in a model aquatic microbial ecosystem.

ABSTRACT:

Background

The sulfur cycle encompasses a series of complex aerobic and anaerobic transformations of S-containing molecules and plays a fundamental role in cellular and ecosystem-level processes, influencing biological carbon transfers and other biogeochemical cycles. Despite their importance, the microbial communities and metabolic pathways involved in these transformations remain poorly understood, especially for inorganic sulfur compounds of intermediate oxidation states (thiosulfate, tetrathionate, sulfite, polysulfides). Isolated and highly stratified, the extreme geochemical and environmental features of meromictic ice-capped Lake A, in the Canadian High Arctic, provided an ideal model ecosystem to resolve the distribution and metabolism of aquatic sulfur cycling microorganis

SUBMITTER: Vigneron A 

PROVIDER: S-EPMC7887784 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature