title: Cucumibacter marinus gen. nov., sp. nov., a marine bacterium in the family Hyphomicrobiaceae.
abstract: A Gram-negative, rod-shaped, strictly aerobic micro-organism, designated strain CL-GR60(T), was isolated from coastal seawater from the East Sea, Korea. A 16S rRNA gene sequence analysis revealed a clear affiliation with the family Hyphomicrobiaceae. Phylogenetic analyses showed that strain CL-GR60(T) formed a robust cluster with the species of the genus Devosia at sequence similarity levels of 91.1-93.1 %; no other species in the family Hyphomicrobiaceae shared more than 90 % sequence similarity with strain CL-GR60(T). The strain grew optimally in the presence of 3-4 % sea salts at 30-35 degrees C and pH 7. The major polar lipids were phosphatidylglycerol, diphosphatidylglycerol, two unidentified glycolipids, an unidentified phospholipid and an unidentified lipid. The strain contained C(18 : 1)omega7c (54.7 %), 11-methyl C(18 : 1)omega7c (19.3 %), C(18 : 0) (14.4 %) as the predominant fatty acids. Ubiquinone-10 was the major quinone. The DNA G+C content was 62.9 mol%. On the basis of physiological data, fatty acid composition and results of phylogenetic analysis of the 16S rRNA gene sequence, strain CL-GR60(T) represents a novel genus and species within the family Hyphomicrobiaceae, for which the name Cucumibacter marinus gen. nov., sp. nov. is proposed. The type strain of Cucumibacter marinus is CL-GR60(T) (=KCCM 90027(T) =DSM 18995(T)).
authors.affiliation: School of Earth and Environmental Sciences and Research Institute of Oceanography, Seoul National University, San 56-1, Shillim-dong, Kwanak-gu, Seoul 151-742, Republic of Korea.
authors.forename: Chung Y
authors.initials: CY
authors.lastname: Hwang
authors.forename: Byung C
authors.initials: BC
authors.lastname: Cho
mesh_terms: D005227:Fatty Acids / Q000378:metabolism; D041921:Hyphomicrobiaceae / Q000737:chemistry / Q000145:classification* / Q000235:genetics / Q000648:ultrastructure; D007723:Korea; D046529:Microscopy, Electron, Transmission; D008969:Molecular Sequence Data; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012623:Seawater / Q000382:microbiology*; D013045:Species Specificity
chemical_list: D005227:Fatty Acids; D012336:RNA, Ribosomal, 16S