gen. nov., sp. nov., isolated from deep-sea water of the Indian Ocean.

A taxonomic study was carried out of strain K7, which was isolated from deep-sea water collected from the Indian Ocean. The bacterium was Gram-stain-negative, aerobic, oxidase-negative, catalase-positive, rod-shaped and non-motile. Growth was observed at salinities of 0.5-10 % (optimum, 3 %), at a pH range of pH 6.0-10.0 (optimum, pH 7.0) and at temperatures of 10-40 °C (optimum, 28 °C). Results of phylogenetic analysis based on 16S rRNA gene sequences indicated that strain K7 belonged to the family , with the high sequence similarities to the genera (92.2 %-94.4 %), (91.9 %-93.2 %), (92.1 %-92.6 %), (92.1 %-92.3 %), (91.9 %-92.1 %) and (91.8 %-92.1 %). The principal fatty acids were iso-C (28.4 %), iso-CG (14.2 %), summed feature 9 (iso-C ω and/or C 10-methyl; 11.6 %), iso-C 3-OH (10.0 %) and summed feature 3 (C 7 and/or C 6; 9.6 %). The G+C content of the chromosomal DNA was 35.8 mol%. The respiratory quinone was determined to be MK-6 (100 %). Phosphatidylethanolamine, two unidentified aminolipids, two unidentified phospholipid and four unidentified lipids were detected. The combined genotypic and phenotypic data show that strain K7 represents a novel species of a novel genus, for which the name gen. nov., sp. nov. is proposed, with the type strain K7 (=MCCC 1A01093=KCTC 52325).