1887

Abstract

An alkaliphilic, slightly halotolerant, chemo-organotrophic, Gram-positive, rod-shaped bacterium, strain 69B4, was isolated from the sediment of the littoral zone of Lake Bogoria, Kenya. Phylogenetically, it is a member of the genus , showing less than 97·5 % sequence similarity to the type strains of other species. The highest level of similarity, albeit moderate, was found with respect to DSM 20118. Chemotaxonomic properties confirm the 16S rRNA gene-based generic affiliation, i.e. a DNA G+C content of 71·5 mol%, anteiso-C and C as the major fatty acids, MK-9(H) as the major isoprenoid quinone, a peptidoglycan containing -ornithine as the diamino acid and -aspartic acid in the interpeptide bridge and phosphatidylglycerol as the only identified main polar lipid. The strain is aerobic to facultatively anaerobic, being capable of growth under strictly anaerobic conditions. Optimal growth occurs between pH values 9·0 and 10·0. On the basis of its distinct phylogenetic position and metabolic properties, strain 69B4 represents a novel species of the genus , for which the name sp. nov. is proposed. The type strain is 69B4 (=DSM 16987=CIP 108683).

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2005-07-01
2019-12-14
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