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Abstract

A Gram-stain-negative and facultatively anaerobic bacterium, SY21, was isolated from marine sediments of the coastal area in Weihai, China (122° 0′ 37″ E 37° 31′ 33″ N). Cells of strain SY21 were 0.3–0.5 μm wide and 1.5–2.5 μm long, catalase- and oxidase-positive. Colonies on 2216E agar were transparent, beige- to pale-brown-pigmented, and approximately 0.5 mm in diameter. Growth occurred optimally at 33–37 °C, pH 7.0–7.5 and in the presence of 2–3 % (w/v) NaCl. Phylogenetic analysis of the 16S rRNA gene indicated that strain SY21 was a member of the genus within the family . The closest described neighbour in terms of 16S rRNA gene sequences identity was Fu11-5 (94.7 %). The major respiratory quinone of strain SY21 was MK-7, and the dominant fatty acids were iso-C, iso-C 3-OH and anteiso-C. The major polar lipids were phosphatidylethanolamine, aminolipid and an unidentified lipid, and the DNA G+C content was 37.9 mol%. The distinct phylogenetic position and phenotypic traits distinguished the novel isolate from Fu11-5. Phenotypic and genotypic analysis indicated that strain SY21 could be assigned to the genus . The name sp. nov. is proposed, with the type strain SY21 ( = KCTC 42260 = MCCC 1H00107).

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2015-09-01
2021-02-28
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