Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 372002
Title Sulfidogenesis under extremely haloalkaline conditions by Desulfonatronospira thiodismutans gen. nov., sp. nov., and Desulfonatronospira delicata sp. nov. - a novel lineage of Deltaproteobacteria from hypersaline soda lakes
Author(s) Sorokin, D.Y.; Tourova, T.P.; Henstra, A.M.; Stams, A.J.M.; Galinski, E.A.; Muyzer, G.
Source Microbiology 154 (2008)Pt 5. - ISSN 1350-0872 - p. 1444 - 1453.
Department(s) Microbiological Laboratory
Publication type Refereed Article in a scientific journal
Publication year 2008
Keyword(s) sulfate-reducing bacterium - inorganic sulfur-compounds - deoxyribonucleic acid - disproportionation - california - reduction - diversity - sediments - pathways - growth
Abstract High rates of sulfidogenesis were observed in sediments from hypersaline soda lakes. Anaerobic enrichment cultures at 2 M Na(+) and pH 10 inoculated with sediment samples from these lakes produced sulfide most actively with sulfite and thiosulfate as electron acceptors, and resulted in the isolation of three pure cultures of extremely natronophilic sulfidogenic bacteria. Strain ASO3-1 was isolated using sulfite as a sole substrate, strain AHT 8 with thiosulfate and formate, and strain AHT 6 with thiosulfate and acetate. All strains grew in a mineral soda-based medium by dismutation of either sulfite or thiosulfate, as well as with sulfite, thiosulfate and sulfate as acceptors, and H(2) and simple organic compounds as electron donors. The acetyl-CoA pathway was identified as the pathway for inorganic carbon assimilation by strain ASO3-1. All strains were obligately alkaliphilic, with an optimum at pH 9.5-10, and grew in soda brines containing 1-4 M total Na(+) (optimum at 1.0-2.0 M). The cells accumulated high amounts of the organic osmolyte glycine betaine. They formed a new lineage within the family Desulfohalobiaceae (Deltaproteobacteria), for which the name Desulfonatronospira gen. nov. is proposed. Strains ASO3-1(T) and AHT 8 from Kulunda Steppe formed Desulfonatronospira thiodismutans sp. nov., and strain AHT 6(T) from Wadi al Natrun is suggested as Desulfonatronospira delicata sp. nov
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