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Abstract

Two Gram-negative, motile, non-spore-forming and slightly halophilic rods (strains SW-145 and SW-156) were isolated from sea water of the Yellow Sea in Korea. Strains SW-145 and SW-156 grew optimally at 37 and 30–37 °C, respectively, and in the presence of 2–6 % (w/v) NaCl. Strains SW-145 and SW-156 were chemotaxonomically characterized as having ubiquinone-9 as the predominant respiratory lipoquinone and C, C 9, C 9 and C 3-OH as the major fatty acids. The DNA G+C contents of strains SW-145 and SW-156 were 58 and 57 mol%, respectively. Phylogenetic analyses based on 16S rRNA gene sequences showed that strains SW-145 and SW-156 fell within the evolutionary radiation enclosed by the genus . The 16S rRNA gene sequences of strains SW-145 and SW-156 were 94·8 % similar. Strains SW-145 and SW-156 exhibited 16S rRNA gene sequence similarity levels of 94·3–98·1 and 95·4–97·7 %, respectively, with respect to the type strains of all species. Levels of DNA–DNA relatedness, together with 16S rRNA gene sequence similarity values, indicated that strains SW-145 and SW-156 are members of two species that are distinct from seven species with validly published names. On the basis of phenotypic properties and phylogenetic and genotypic distinctiveness, strains SW-145 (=KCTC 12185=DSM 16070) and SW-156 (=KCTC 12184=DSM 16072) should be placed in the genus as the type strains of two distinct novel species, for which the names sp. nov. and sp. nov. are proposed.

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2004-09-01
2019-10-21
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vol. , part 5, pp. 1799 - 1803

Cellular fatty acid profiles of strains SW-145 and SW-156 and type strains of related species. [PDF](19 KB)



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