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Abstract

A Gram-stain-negative, strictly aerobic, motile, non-gliding, oxidase-positive, catalase-positive, rod-shaped bacterium, designated strain YBW34, was isolated from seawater from the bottom of the Yellow Sea at station H12 (−73m in depth). Growth occurred at 10–45 °C (optimum 28 °C), in the presence of 1–12 % NaCl (w/v, optimum 4 %) and at pH 6.0–8.0 (optimum pH 7.0). The major fatty acids (>10 %) were C ω7 and C. The major polar lipids comprised phosphatidylcholine, phosphatidylglycerol, phosphatidylethanolamine and three unidentified aminolipids. The major respiratory quinone was ubiquinone-10 (Q-10). The DNA G+C content of strain YBW34 was 64.2 mol%. The most closely related species was JCM 14837 with 95.8 % sequence similarity in . It showed 16S rRNA gene sequence similarities of 93.03–95.49, 93.03–95.49 and 95.31–95.32 % to species of genera , and , respectively. Nevertheless, strain YBW34 formed a distinct lineage in the trees which did not join the genera mentioned above in the phylogenetic dendrogram based on 16S rRNA gene sequences. The phenotypic, chemotaxonomic and phylogenetic data indicated that strain YBW34 represents a novel genus and species, for which the name gen. nov., sp. nov. is proposed. The type strain is YBW34 (=JCM 31462=KCTC 52366=MCCC 1K03203).

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2017-09-01
2020-01-21
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