Fractionation of sulfur isotopes by the yeast Saccharomyces cerevisiae

McCready, R. G. L.; Kaplan, I. R.; Din, George A.

doi:10.1016/0016-7037(74)90119-7

Cited by 33 publications

(9 citation statements)

References 21 publications

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“…McCready et al (1974) reported that H 2 S formed in such systems was enriched in 32 S by up to 25%c and that there was a tendency for increasing discrimination as the reduction proceeded. The organic sulfur of pantothenate-deficient yeast was also enriched in 32 S in comparison with organisms grown on pantothenate-sufficient media (Table 6).…”

Section: Isotope Fractionation By Assimilatory Organismsmentioning

confidence: 96%

Microbiological fractionation of stable sulfur isotopes: A review and critique

Chambers¹,

Trudinger²

1979

Geomicrobiology Journal

407

143

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Section: Isotope Fractionation By Assimilatory Organismsmentioning

confidence: 96%

Microbiological fractionation of stable sulfur isotopes: A review and critique

Chambers¹,

Trudinger²

1979

Geomicrobiology Journal

407

143

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“…In general, the rate-limiting step is the breaking of the first S-O bond, namely the reduction of sulfate to sulfite. Early laboratory studies with pure cultures of mesophilic sulfate reducing bacteria produced sulfide depleted in 34 S by 4 up to 47 ‰ (Harrison and Thode 1957a, b;Kaplan and Rittenberg 1964;Kemp and Thode 1968;McCready et al 1974;McCready 1975;Bolliger et al 2001) and for decades this maximum value was considered to be a possible limit for the microbial dissimilatory process (e.g. Canfield and Teske 1996).…”

Section: Dissimilatory Sulfate Reductionmentioning

confidence: 99%

Isotope Fractionation Processes of Selected Elements

Hoefs

2015

Stable Isotope Geochemistry

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“…Bacterial reduction of the sulfite (Fig. 1 B) favors the light isotope and produces a fractionation of 30 to 50 per mil (McCready et al 1974). The remaining sulfite (enriched in a4S) is either oxidized to sulfate (other partly oxidized sulfur species may act as the oxidant) or is recombined with hydrogen sulfide to form thiosulfate (Fig.…”

Section: The Role Of Thiosulfate In Sulfur Isotope Fractionationmentioning

confidence: 98%

The possible role of thiosulfate in the precipitation of 34S-rich barite in some Mississippi Valley-type deposits

Spirakis

1991

Mineral. Deposita

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Abstract. The precipitation of extremely 34S-rich barite in the late stage of mineralization in the Mississippi Valleytype deposits of the Illinois-Kentucky district (U.S.A.) may be explained by reactions involving thiosulfate ($20~). Inorganic processes are known to concentrate 34S in the sulfonate site of thiosulfate and 32S in the sulfate site. In the mineralizing solution, these inorganic processes may have fractionated sulfur between the two sites by about 40 per rail. At the low temperatures of the late barite stage of mineralization, bacteria are known to metabolize thiosulfate by various reactions. In one of these, dissimilatory reduction, hydrogen sulfide and sulrite are produced. Isotopically light sulfite is preferentially reduced to sulfide by bacteria to leave a residual sulfite enriched in 34S. Part of the residual sulfite may be oxidized to form isotopically heavy sulfate; part may recombine with hydrogen sulfide to form thiosulfate. The recombination also enriches the sulfonate site in 34S and the sulfane site in 32S. Recycling the newly formed thiosulfate through the above steps further enriches sulfite and sulfate from oxidation of sulfite in 34S. During genesis of the ores, the aggregate effect of these reactions may have been the precipitation of extremely 34S-rich barite.The sequence of reactions suggested above requires the presence of organic matter. Previously proposed reactions to account for the precipitation of sulfide minerals and fluorite and for the carbonate paragenesis also require the presence of organic matter. Thus, organic matter in the host rocks may cause the various ore-zone reactions and account for the localization of the ores.

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Fractionation of sulfur isotopes by the yeast Saccharomyces cerevisiae

Cited by 33 publications

References 21 publications

Microbiological fractionation of stable sulfur isotopes: A review and critique

Microbiological fractionation of stable sulfur isotopes: A review and critique

Isotope Fractionation Processes of Selected Elements

The possible role of thiosulfate in the precipitation of 34S-rich barite in some Mississippi Valley-type deposits

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