A sulfate-reducing bacterium, strain HDv(T = type strain), was isolated from an anoxic ricefield soil. Cells were Gram-negative, non-sporulating curved rods motile by means of a single polar flagellum. Cytochrome and desulfoviridin were present. In the presence of sulfate, glycerol, 1,2- and 1,3-propanediol, dihydroxyacetone, pyruvate, lactate, fumarate, maleate, malate and succinate were incompletely oxidized mainly to acetate. Sulfite, thiosulfate, elemental sulfur, fumarate, maleate and malate were utilized as alternative electron acceptors. In the absence of added electron acceptors, pyruvate, fumarate, maleate, malate and dihydroxyacetone were fermented. The DNA base composition was 67 mol% G+C. The phylogenetic, phenotypic and physiological characteristics of strain HDvindicate that it is a new species of the genus , for which the name sp. nov is proposed; the type strain is HDv(= DSM 6830). Phylogenetic analysis confirmed that was a distinct species supporting the previously published phenotypic data.


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