title: Stable sulfur isotope fractionation during the reduction of thiosulfate by Dethiosulfovibrio russensis.
abstract: Stable sulfur isotope fractionation was investigated during reduction of thiosulfate by growing batch cultures of Dethiosulfovibrio russensis at a cell-specific reduction rate of 2.4 +/- 0.72 fmol cell(-1) d(-1) (28 degrees C). Citrate was used as carbon and energy source. The hydrogen sulfide produced by this sulfur- and thiosulfate-reducing bacterium was depleted in 34S by 11% compared to total thiosulfate sulfur, in agreement with previous results observed for sulfate-reducing bacteria. This indicates the operation of a similar pathway for thiosulfate reduction in these phylogenetically different bacteria.
authors.affiliation: Max Planck Institute for Marine Microbiology, Bremen, Germany.
authors.forename: A V
authors.initials: AV
authors.lastname: Surkov
authors.forename: M E
authors.initials: ME
authors.lastname: Böttcher
authors.forename: J
authors.initials: J
authors.lastname: Kuever
mesh_terms: D000693:Anaerobiosis; D006089:Gram-Negative Anaerobic Bacteria / Q000378:metabolism*; D010084:Oxidation-Reduction; D013440:Sulfides / Q000378:metabolism; D013460:Sulfur Isotopes / Q000378:metabolism*; D016999:Sulfur-Reducing Bacteria / Q000378:metabolism*; D013885:Thiosulfates / Q000378:metabolism*
chemical_list: D013440:Sulfides; D013460:Sulfur Isotopes; D013885:Thiosulfates