gen. nov., sp. nov., a novel marine bacterium of the group isolated from surface water of the central Baltic Sea Free

Abstract

A bacterial isolate from the Baltic Sea, BA160, was characterized for its physiological and biochemical features, fatty acid profile, G+C content and phylogenetic position based on 16S rRNA gene sequences. The strain was isolated from the surface water of the central Baltic Sea during the decay of a plankton bloom. Phylogenetic analyses of the 16S rRNA gene sequence revealed a clear affiliation with the family ‘’, and showed the closest phylogenetic relationship with the species and . The G+C content of the DNA was 38·4 mol%. The strain was red-coloured due to carotenoids, Gram-negative, rod-shaped, and catalase- and oxidase-positive. Growth was observed at salinities from 0 to 6 %, with an optimum around 1·5 %. Temperature for growth ranged from 4 to 40 °C, with an optimum around 30 °C. The fatty acids were dominated by branched-chain fatty acids (>87 %), with a high abundance of iso-C (23 %) and anteiso-C (19 %). According to its morphology, physiology, fatty acid composition, G+C content and 16S rRNA gene sequence, strain BA160 is considered to represent a new genus of the family ‘’. Due to its aquatic origin, the name gen. nov, sp. nov. is suggested for the type species (type strain, BA160=DSM 16537=LMG 22565=CIP 108445) of the new genus.

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2004-11-01
2024-03-29
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