1887

Abstract

Two aerobic, rod-shaped, non-motile, non-sporulating and Gram-staining-negative bacterial strains, namely NH6-24 and Za3-11, were isolated from the surface seawater of the South China Sea and the estuary of the Yangtze River, respectively. The two isolates grew at 14–44 °C (optimum 37–40 °C) and pH 6.0–8.5 (optimum pH 7.0–7.5). The sea salt ranges for growth were 0.5–10 % (w/v) (optimum 1–2.5 %) for strain NH6-24 and 0–12 % (w/v) (optimum 0.5–4.5 %) for strain Za3-11.Both strains could grow in the absence of NaCl. Results of phylogenetic analysis based on 16S rRNA gene sequences indicated that the two isolates showed closest affinity to the genera (96.0 %) and (94.1–95.1 %) and formed a single lineage in the cluster of the family . The predominant isoprenoid quinone was ubiquinone-8.The major fatty acids were Cω7, iso-C and C.The dominant polar lipids were diphosphatidylglycerol, phosphatidylglycerol and phosphatidylethanolamine. The DNA G+C content was 65 mol%. Based on the polyphasic taxonomic characterization, strains NH6-24 and Za3-11 are considered to represent a novel species of a novel genus, for which the name gen. nov., sp. nov. is proposed. The type strain of the type species is NH6-24 ( = CGMCC 1.10815 = JCM 17607) and an additional strain is Za3-11 ( = CGMCC 1.10816 = JCM 17606).

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2015-10-01
2019-12-15
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