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Abstract

A Gram-stain-negative, non-motile, non-spore-forming, rod-shaped bacterial strain, BB-Mw22, was isolated from a tidal flat sediment of the South Sea in South Korea. It grew optimally at 30–37 °C, at pH 7.0–7.5 and in the presence of 2–3 % (w/v) NaCl. Phylogenetic trees based on 16S rRNA gene sequences revealed that strain BB-Mw22 belonged to the genus and the cluster comprising species and strain BB-Mw22 was clearly separated from other taxa. Strain BB-Mw22 exhibited 95.3–98.7 % 16S rRNA gene sequence similarity to the type strains of recognized species. Strain BB-Mw22 contained Q-8 as the predominant ubiquionone and iso-C and iso-C 3-OH as the major fatty acids. The major polar lipids were phosphatidylglycerol, phosphatidylethanolamine, phosphatidylmonomethylethanolamine and one unidentified aminolipid. The DNA G+C content of strain BB-Mw22 was 48.9 mol%, and its mean DNA–DNA hybridization values with YCS-5, JCM 16211 and JCM 17727 were 14–28 %. Phylogenetic and genetic distinctiveness and differential phenotypic properties revealed that strain BB-Mw22 is distinguishable from all recognized species. On the basis of the data presented, strain BB-Mw22 is considered to represent a novel species of the genus , for which the name sp. nov. is proposed. The type strain is BB-Mw22 ( = KCTC 23892  = CCUG 62217).

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2013-03-01
2020-01-17
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