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Abstract

An aerobic, coccoid to short rod, yellow-pigmented, non-sporulating and Gram-staining-negative bacterium, designated NH6-79, was isolated from surface seawater of the South China Sea. The isolate was motile with a polar flagellum. Growth was observed at 4–42 °C (optimum 37 °C), at pH 6.0–8.5 (optimum pH 7.0), and with 0.5–11 % (w/v) NaCl (optimum 4.5 %) and 1.5–17 % (w/v) sea salt (optimum 3.5–5 %). Strain NH6-79 could decompose peptone to produce HS, but could not hydrolyse skimmed milk. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain NH6-79 had the closest affinity to the genus , sharing the highest 16S rRNA gene sequence similarity with ‘’ JLT2013 (94.1 %), CC-MMS-1 (93.4 %), SH25 (92.9 %) and HTCC2503 (92.7 %), and lower sequence similarities (<90 %) with all other genera. The dominant fatty acids were C 7 and C. The polar lipid profile was mainly composed of three unidentified glycolipids. The predominant isoprenoid quinone was ubiquinone-10. The DNA G+C content was 60.7 mol%. Based on the polyphasic taxonomic characterization, strain NH6-79 is considered to represent a novel species of the genus , for which the name sp. nov. is proposed. The type strain is NH6-79 (=CGMCC 1.14984=JCM 30557=MCCC 1K00277).

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2016-09-01
2020-01-17
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