Large sulfur isotope fractionation by bacterial sulfide oxidation | Zendy

André Pellerin | Zendy; Gilad Antler | Zendy; Simon Agner Holm | Zendy; Alyssa Findlay | Zendy; Peter W. Crockford | Zendy; Alexandra V. Turchyn | Zendy; Bo Barker Jørgensen | Zendy; Kai Finster | Zendy

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Large sulfur isotope fractionation by bacterial sulfide oxidation

Author(s) -

André Pellerin,

Gilad Antler,

Simon Agner Holm,

Alyssa Findlay,

Peter W. Crockford,

Alexandra V. Turchyn,

Bo Barker Jørgensen,

Kai Finster

Publication year - 2019

Publication title -

science advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.928

H-Index - 146

ISSN - 2375-2548

DOI - 10.1126/sciadv.aaw1480

Subject(s) - sulfur , sulfide , fractionation , isotope , environmental chemistry , isotope fractionation , isotopes of sulfur , sulfur cycle , radiochemistry , chemistry , biochemistry , chromatography , organic chemistry , physics , amino acid , quantum mechanics , methionine

A sulfide-oxidizing microorganism, (DA), generates a consistent enrichment of sulfur-34 ( ) in the produced sulfate of +12.5 per mil or greater. This observation challenges the general consensus that the microbial oxidation of sulfide does not result in large enrichments and suggests that sedimentary sulfides and sulfates may be influenced by metabolic activity associated with sulfide oxidation. Since the DA-type sulfide oxidation pathway is ubiquitous in sediments, in the modern environment, and throughout Earth history, the enrichments and depletions in in sediments may be the combined result of three microbial metabolisms: microbial sulfate reduction, the disproportionation of external sulfur intermediates, and microbial sulfide oxidation.

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