Marinobacter fonticola sp. nov., isolated from deep sea cold seep sediment

In this study, we report a novel Gram-negative bacterium, designated as strain CS412 , isolated from deep-sea sediment collected in a cold seep area of the South China Sea. Growth of strain CS412 occurred at 4-40 °C (optimum, 28 °C), pH 5.0-11.0 (optimum, pH 6.0) and with 0-19 % (w/v) NaCl (optimum, 1-2 %). Phylogenetic analysis based on 16S rRNA gene sequence data indicated that strain CS412 belonged to the genus . The closest phylogenetic neighbours of strain CS412 were HS225 (96.9 %), NTU-104 (96.8%), NKSG1 (96.4%) and dd-M3 (96.3 %). The genomic DNA G+C content of strain CS412 was 58.0 mol%. The principal respiratory quinone was ubiquinone-9 (Q-9). The polar lipids of CS412 contained diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, aminophospholipidand and four glycolipids. The major fatty acids of CS412 contained cyclo-C ω8 , C , C ω7 and C ω7 11-methyl. The results of phylogenetic, physiological, biochemical and morphological analyses suggested that strain CS412 represents a novel species of the genus , and the name sp. nov. is proposed with the type species CS412 (=CCTCC AB 2019197 =KCTC 72475 ).