1887

Abstract

A Gram-negative, motile, non-spore-forming and moderately halophilic rod-shaped strain, SW-45, was isolated from sea water of the East Sea in Korea. The organism grew optimally at 30–37 °C and grew at 4 and 46 °C. It grew in the presence of 0·5–18 % (v/w) NaCl, with an optimum of 2–7 % NaCl. Strain SW-45 was chemotaxonomically characterized by having ubiquinone-9 (Q-9) as the major respiratory lipoquinone and C, C 9 and C 9 as the predominant fatty acids. The DNA G+C content was found to be 55 mol%. Phylogenetic analysis based on 16S rDNA sequences showed that strain SW-45 forms a coherent cluster with the clade comprising the two species. 16S rDNA sequence similarities between strain SW-45 and the species was 94·9 % to DSM 8798 and 95·3 % to DSM 11845. Levels of DNA–DNA relatedness between strain SW-45 and the type strains of . and . were respectively 4·3 and 5·5 %. On the basis of phenotypic properties, phylogeny and genomic data, strain SW-45 (=KCCM 41591 =JCM 11547) should be placed in the genus as a member of a novel species, for which the name sp. nov. is proposed. As part of this study, the major respiratory lipoquinone of . and . was also found to be Q-9.

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2003-03-01
2020-01-21
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