What Controls the Sulfur Isotope Fractionation during Dissimilatory Sulfate Reduction?

ABSTRACT: Sulfate often behaves conservatively in the oxygenated environments but serves as an electron acceptor for microbial respiration in a wide range of natural and engineered systems where oxygen is depleted. As a ubiquitous anaerobic dissimilatory pathway, therefore, microbial reduction of sulfate to sulfide has been of continuing interest in the field of microbiology, ecology, biochemistry, and geochemistry. Stable isotopes of sulfur are an effective tool for tracking this catabolic process as microorganisms discriminate strongly against heavy isotopes when cleaving the sulfur-oxygen bond. Along with its high preservation potential in environmental archives, a wide variation in the sulfur isotope effects can provide insights into the physiology of sulfate reducing microorganisms across tempo

SUBMITTER: Sim MS 

PROVIDER: S-EPMC10125365 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature