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Abstract

Two Gram-negative, motile, non-spore-forming bacterial strains, SW-353 and SW-369, were isolated from seawater from the East Sea, Korea, and their taxonomic positions were investigated by means of a polyphasic study. Strains SW-353 and SW-369 grew optimally at 30–37 °C and pH 7.0–8.0. Strains SW-353 and SW-369 contained Q-8 as the predominant ubiquinone and contained C, C 7 and C 7 and/or iso-C 2-OH as the major fatty acids. The DNA G+C contents were 50.1 and 50.5 mol%. Strains SW-353 and SW-369 exhibited no differences in their 16S rRNA gene sequences and showed a mean DNA–DNA relatedness level of 91 %. Phylogenetic analyses based on 16S rRNA gene sequences showed that strains SW-353 and SW-369 belong to the genus . Similarity values between the 16S rRNA gene sequences of the two isolates and the type strains of the recognized species were in the range 96.6–97.9 %. DNA–DNA relatedness data and differential phenotypic properties, together with the phylogenetic distinctiveness, demonstrated that strains SW-353 and SW-369 differ from the recognized species. On the basis of phenotypic, phylogenetic and genetic data, therefore, strains SW-353 and SW-369 represent a novel species of the genus , for which the name sp. nov. is proposed. The type strain is SW-353 (=KCTC 12840=JCM 14331).

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2007-07-01
2020-01-26
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vol. , part 7, pp. 1386 - 1390

Cellular fatty acid compositions (%) of strains SW-353 and SW-369. [PDF](19 KB)



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