1887

Abstract

Two moderately halophilic sulfate-reducing bacteria were isolated from an African oil pipeline and designated strains SEBR 3640 and SEBR 2840 (T = type strain). Both of these strains possessed traits that define the genus . The cells of both isolates were motile curved rods that had a single polar flagellum and contained desulfoviridin, and both isolates utilized lactate, pyruvate, malate, fumarate, succinate, and ethanol in the presence of sulfate. Sulfite, thiosulfate, and elemental sulfur were also used as electron acceptors in the presence of lactate. However, both strains tolerated higher concentrations of NaCI (up to 17%) than all other species except , which tolerated a similar level of NaCI. The results of a 16S rRNA gene sequence analysis also placed the designated type strain, strain SEBR 2840, in the genus but revealed that this organism was significantly different from and all other validly described species. On the basis of our results, we propose that strain SEBR 2840 is a member of a new species of the genus . The type strain of is strain SEBR 2840 (= DSM 10636).

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1996-07-01
2022-11-27
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