1887

Abstract

Phenotypic and phylogenetic studies were performed with two strains (OCh 317and OCh 318; T = type strain) of aerobic chemoheterotrophic bacteriochlorophyll-containing bacteria isolated from water of a saline lake located on the west coast of Australia. Both strains were Gram-negative, short rods and were motile by means of polar flagella. Catalase, oxidase, nitrate reductase, phosphatase and urease were produced. The cells utilized -glucose, citrate, glycolate, pyruvate and ethanol. Acids were produced from -arabinose, -fructose, -galactose, -glucose, -ribose and -xylose. The strains could grow in media containing 0·5–7·5% NaCl. Bacteriochlorophyll a was synthesized under aerobic conditions. The results of 16S rRNA gene sequence comparisons revealed that strain OCh 317represented a new lineage in the -3 group of the class . Strains OCh 317and OCh 318 were identified as strains of the same species because of their very similar phenotypic characteristics and their previously described high DNA-DNA homology. Therefore, it was concluded that the two strains should be assigned to a new genus and species, for which the name is proposed. The type strain is OCh 317(= JCM 10189).

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1999-01-01
2024-06-13
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