Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1007/s00792-013-0582-0
Volltext Shareable Link
Titel (primär) Disproportionation of elemental sulfur by haloalkaliphilic bacteria from soda lakes
Autor Poser, A.; Lohmayer, R.; Vogt, C.; Knoeller, K.; Planer-Friedrich, B.; Sorokin, D.; Richnow, H.-H.; Finster, K.
Quelle Extremophiles
Erscheinungsjahr 2013
Band/Volume 17
Heft 6
Seite von 1003
Seite bis 1012
Sprache englisch
Keywords Elemental sulfur; Disproportionation; Soda lakes; Alkaliphilic; Polysulfides; Desulfurivibrio
UFZ Querschnittsthemen RU3;

Microbial disproportionation of elemental sulfur to sulfide and sulfate is a poorly characterized part of the anoxic sulfur cycle. So far, only a few bacterial strains have been described that can couple this reaction to cell growth. Continuous removal of the produced sulfide, for instance by oxidation and/or precipitation with metal ions such as iron, is essential to keep the reaction exergonic. Hitherto, the process has exclusively been reported for neutrophilic anaerobic bacteria. Here, we report for the first time disproportionation of elemental sulfur by three pure cultures of haloalkaliphilic bacteria isolated from soda lakes: the Deltaproteobacteria Desulfurivibrio alkaliphilus and Desulfurivibrio sp. AMeS2, and a member of the Clostridia, Dethiobacter alkaliphilus. All cultures grew in saline media at pH 10 by sulfur disproportionation in the absence of metals as sulfide scavengers. Our data indicate that polysulfides are the dominant sulfur species under highly alkaline conditions and that they might be disproportionated. Furthermore, we report the first organism (Dt. alkaliphilus) from the class Clostridia that is able to grow by sulfur disproportionation.

dauerhafte UFZ-Verlinkung
Poser, A., Lohmayer, R., Vogt, C., Knoeller, K., Planer-Friedrich, B., Sorokin, D., Richnow, H.-H., Finster, K. (2013):
Disproportionation of elemental sulfur by haloalkaliphilic bacteria from soda lakes
Extremophiles 17 (6), 1003 - 1012 10.1007/s00792-013-0582-0