Role of APS reductase in biogeochemical sulfur isotope fractionation [PDF]
Nature Communications, 2019 Changes in S-isotope ratios over time provide clues to understanding the co-evolution of Earth and its biosphere. Here the authors determine the isotope effect of the first reductive enzyme in the sulfate respiration pathway and reinterpret sedimentary S-
Min Sub Sim +6 more
doaj +8 more sources
Large sulfur isotope fractionation by bacterial sulfide oxidation. [PDF]
Sci Adv, 2019 The microbial oxidation of sulfide can produce large enrichments in the stable isotopes of sulfur.
Pellerin A +7 more
europepmc +6 more sources
Diversity of Sulfur Isotope Fractionations by Sulfate-Reducing Prokaryotes [PDF]
Applied and Environmental Microbiology, 2001 ABSTRACT Batch culture experiments were performed with 32 different sulfate-reducing prokaryotes to explore the diversity in sulfur isotope fractionation during dissimilatory sulfate reduction by pure cultures. The selected strains reflect the phylogenetic and physiologic diversity of presently known sulfate reducers and cover a ...
Jan Detmers +3 more
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Microbial Sulfur Isotope Fractionation in the Chicxulub Hydrothermal System. [PDF]
Astrobiology, 2021 Target lithologies and post-impact hydrothermal mineral assemblages in a new 1.3 km deep core from the peak ring of the Chicxulub impact crater indicate sulfate reduction was a potential energy source for a microbial ecosystem (Kring et al., 2020 ).
Kring DA, Whitehouse MJ, Schmieder M.
europepmc +3 more sources
U mobilization and associated U isotope fractionation by sulfur-oxidizing bacteria [PDF]
Frontiers in Microbiology, 2023 Uranium (U) contamination of the environment causes high risk to health, demanding for effective and sustainable remediation. Bioremediation via microbial reduction of soluble U(VI) is generating high fractions (>50%) of insoluble non-crystalline U(IV)
C. D. Rosendahl +3 more
doaj +2 more sources
Sulfur isotope fractionation during heterogeneous oxidation of SO2 on mineral dust [PDF]
Atmospheric Chemistry and Physics, 2012 Mineral dust is a major fraction of global atmospheric aerosol, and the oxidation of SO2 on mineral dust has implications for cloud formation, climate and the sulfur cycle.
P. Hoppe +5 more
doaj +2 more sources
Fractionation of Sulfur Isotopes during Oxidation [PDF]
Bulletin of the Chemical Society of Japan, 1958 The fractionation process of sulfur isotopes during oxidation and the distribution of sulfur isotopes in nature using sulfur-35 as a tracer were examined. Zinc sulfide labeled with S/sup 35/ was prepared from hydrogen sulfide and zinc acetate, and about 1/10 of the total was oxidized to the sulfur.
Iwaji Iwasaki +2 more
openalex +2 more sources
Molecular insights into the dynamic relationship between respiration rate and sulfur isotope effect [PDF]
Applied and Environmental MicrobiologyMicrobial sulfate reduction and its resulting sulfur isotope effects are crucial for understanding the past and present sulfur cycle. Microbial S-isotope effects have often been explained by their inverse correlation with the cell-specific sulfur ...
Dong Kyun Woo +4 more
doaj +2 more sources
Influence of Phosphorus and Cell Geometry on the Fractionation of Sulfur Isotopes by Several Species of Desulfovibrio during Microbial Sulfate Reduction [PDF]
Frontiers in Microbiology, 2017 We investigated the influence of organic substrates and phosphate concentration on the rates of dissimilatory microbial sulfate reduction and the 34S/32S isotopic fractionation produced by several Desulfovibrio species.
Shikma Zaarur +3 more
doaj +2 more sources
Isotopic fractionation of sulfur during COS hydrolysis
, 2023 Carbonyl Sulfide (COS) is the most abundant sulfur-containing gas in the atmosphere, and it is used as a proxy for terrestrial gross primary productivity (GPP). There are uncertainties in the COS fluxes estimations that limit this approach. Oceans are the major source of COS to the atmosphere.
Yasmin Avidani +3 more
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