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Abstract

A Gram-stain-negative, aerobic, catalase-positive, oxidase-positive, motile by a single polar flagellum, rod-shaped strain, designated DSW25-10, was isolated from the deep-sea water of the East Sea, Republic of Korea. Strain DSW25-10grew at 4–35 °C (optimum, 20–35 °C), at pH 5.5–9.0 (optimum, pH 7.0) and in the presence of 0–6.0 % NaCl (optimum, 0.5–2 %), and could assimilate valerate, but not assimilate d-mannitol and 3-hydroxy-butyrate. Comparative 16S rRNA gene sequence analysis showed that strain DSW25-10 belongs to the genus Zhongshania in the family Spongiibacteraceae and is most closely related to Zhongshania guokunii ZS6-22, Zhongshania borealis CL-AS9, Zhongshania aliphaticivorans SM-2 and Zhongshani antarctica ZS5-23 with a similarities of 97.1, 97.0, 96.7 and 96.6 %, respectively. The G+C content of genomic DNA was 49.1 mol% and the major respiratory quinone was ubiquinone-8. Phosphatidylethanolamine, phosphatidylglycerol and diphosphatidylglycerol were identified as the major cellular polar lipids. The predominant cellular fatty acids in strain DSW25-10 were summed feature 3 (comprising C16 : 1ω7c and/or C16 : 1ω6c), summed feature 8 (comprising C18 : 1ω7c and/or C18 : 1ω6c), C16 : 0 and C17 : 1ω8c. The DNA–DNA relatedness values between strain DSW25-10 and related strains were clearly lower than 70 %. On the basis of evidence from a polyphasic analysis, strain DSW25-10 is proposed to represent a novel species, Zhongshania marina sp. nov. The type strain is DSW25-10 (=KCCM 43273=JCM 17372).

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2018-12-20
2019-10-15
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