Large sulfur isotope fractionation by bacterial sulfide oxidation.
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Authors
Holm, Simon Agner
Crockford, Peter W
Publication Date
2019-07Journal Title
Sci Adv
ISSN
2375-2548
Publisher
American Association for the Advancement of Science (AAAS)
Volume
5
Issue
7
Pages
eaaw1480
Language
eng
Type
Article
This Version
VoR
Physical Medium
Electronic-eCollection
Metadata
Show full item recordCitation
Pellerin, A., Antler, G., Holm, S. A., Findlay, A. J., Crockford, P. W., Turchyn, A. V., Jørgensen, B. B., & et al. (2019). Large sulfur isotope fractionation by bacterial sulfide oxidation.. Sci Adv, 5 (7), eaaw1480. https://doi.org/10.1126/sciadv.aaw1480
Abstract
A sulfide-oxidizing microorganism, Desulfurivibrio alkaliphilus (DA), generates a consistent enrichment of sulfur-34 (34 S) 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 34 S 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 34 S in sediments may be the combined result of three microbial metabolisms: microbial sulfate reduction, the disproportionation of external sulfur intermediates, and microbial sulfide oxidation.
Keywords
Deltaproteobacteria, Sulfates, Sulfur Isotopes, Chemical Fractionation, Oxidation-Reduction, Metabolic Networks and Pathways
Sponsorship
Natural Environment Research Council (NE/S001344/1)
Identifiers
External DOI: https://doi.org/10.1126/sciadv.aaw1480
This record's URL: https://www.repository.cam.ac.uk/handle/1810/296715
Rights
Attribution-NonCommercial 4.0 International
Licence URL: https://creativecommons.org/licenses/by-nc/4.0/
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