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Volume 41, Issue 1

gen. nov., sp. nov., a Halophilic Sulfate-Reducing Bacterium from Sediments of a Hypersaline Lake in Senegal Free

Abstract

Sulfate-reducing bacterial strain HR was isolated from sediments of Retba Lake, a pink hypersaline lake in Senegal. The cells were motile, nonsporulating, and rod shaped with polar flagella and incompletely oxidized a limited range of substrates to acetate and CO. Acetate and vitamins were required for growth and could be replaced by Biotrypcase or yeast extract. Sulfate, sulfite, thiosulfate, and elemental sulfur were used as electron acceptors and were reduced to HS. Growth occurred at pH values ranging from 5.5 to 8.0. The optimum temperature for growth was 37 to 40°C. NaCl and MgCl were required for growth; the optimum NaCl concentration was near 10%. The guanine-plus-cytosine content of the DNA was 57.1 ± 0.2 mol%. On the basis of the morphological and physiological properties of this strain, we propose that it should be classified in a new genus, , which includes a single species, . The type strain is strain DSM 5692.

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Copyright © 1991 International Union of Microbiological Societies
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1991-01-01
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Desulfohalobium retbaense gen. nov., sp. nov., a Halophilic Sulfate-Reducing Bacterium from Sediments of a Hypersaline Lake in Senegal
Int J Syst Evol Microbiol 41, 74 (1991); https://doi.org/10.1099/00207713-41-1-74
/content/journal/ijsem/10.1099/00207713-41-1-74
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