Abstract
Determinative studies were carried out on an obligatory anaerobic, sulfate- reducing bacterium (strain No. 61) isolated from a pond water in Skarvs Nes district in the East Antarctica. This sulfate-reducing bacterium was nonsporulating, sigmoid or straight rods with a single polar flagellum, gram negative, and possessed cytochrome c3 and desulfoviridin, characteristic of the genus Desulfovibrio. It could grow with lactate, malate, pyruvate, or choline when sulfate was present in the culture medium and had a stable sodium chloride requirement. These observations dinicated that strain No. 61 closely resembled Desulfovibrio desulfuricans var. aestuarii.
