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Abstract

A Gram-stain-negative, rod-shaped, facultatively aerobic strain, motile by a monotrichous (polar or lateral) flagellum, designated BSS09, was isolated from surface sediment of the Bohai Sea, PR China. Growth was observed at 10–45 °C (optimum 32 °C), in the presence of 1.0–7.0 % (w/v) NaCl (optimum 4.0 %) and at pH 5.0–8.0 (optimum pH 6.0). Phylogenetic analysis, based on 16S rRNA gene sequences, revealed that strain BSS09 belonged to the genus Roseibium and showed the highest sequence similarity of 96.5 % to Roseibium hamelinense JCM 10544. The significant dominant fatty acid was C18 : 1ω7c. The polar lipids comprised one phosphatidylcholine, one phosphatidylmonomethylethanolamine, one unidentified aminolipid, one phosphatidylglycerol, one phosphatidylethanolamine and one unidentified polar lipid. The major respiratory quinone was Q-10. The DNA G+C content of strain BSS09 was 57.1 mol%. On the basis of evidence from this polyphasic study, strain BSS09 is proposed to represent a novel species of the genus Roseibium , for which the name Roseibium sediminis sp. nov. is proposed. The type strain is BSS09 (=KCTC 52373=MCCC 1K03201).

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2017-08-31
2019-10-14
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