sp. nov., a novel bacterium isolated from the South China Sea.

Two Gram-stain-negative strains, designed SYSU M86414 and SYSU M84420, were isolated from marine sediment samples of the South China Sea (Sansha City, Hainan Province, PR China). These strains were aerobic and could grow at pH 6.0-8.0 (optimum, pH 7.0), 4-37 °C (optimum, 28 °C), and in the presence of 0-10 % NaCl (w/v; optimum 3 %). The predominant respiratory menaquinone of strains SYSU M86414 and SYSU M84420 was MK-6. The primary cellular polar lipid was phosphatidylethanolamine. The major cellular fatty acids (>10 %) in both strains were iso-C, iso-C G, and iso-C 3-OH. The DNA G+C content of strains SYSU M86414 and SYSU M84420 were both 42.10 mol%. Phylogenetic analyses based on 16S rRNA gene sequences and core genes indicated that these novel strains belonged to the genus and strain SYSU M86414 showed the highest 16S rRNA gene sequence similarity to JCM 11811 (98.83 %), followed by BC31-1-A7 (98.62 %), while strain SYSU M84420 had highest 16S rRNA gene sequence similarity to JCM 11811 (98.76 %) and BC31-1-A7 (98.55 %). Based on the results of polyphasic analyses, strains SYSU M86414 and SYSU M84420 should be considered to represent a novel species of the genus , for which the name sp. nov. is proposed. The type strain of the proposed novel isolate is SYSU M86414 (=GDMCC 1.3806=KCTC 102040).