title: Roseovarius confluentis sp. nov., isolated from estuary sediment.
abstract: A Gram-stain-negative and strictly aerobic bacterium, designated strain SAG6T, was isolated from estuary sediment in South Korea. Cells of strain SAG6T were found to be oxidase- and catalase-positive rods with gliding motility. Cell growth was observed at 15-40 °C (optimum 30 °C), at pH 6.5-10.0 (optimum pH 7.0) and in the presence of 0.5-13.0 % (w/v) NaCl (optimum 2.0 %). Ubiquinone-10 was the only detected respiratory quinone and summed feature 8 (comprising C18 : 1ω7c/C18 : 1ω6c), C16 : 0, C18 : 1ω7c 11-methyl and C12 : 0 were the major fatty acids identified (>5 % of the total fatty acids). The polar lipids of strain SAG6T consisted of phosphatidylcholine, phosphatidylglycerol, diphosphatidylglycerol, an unidentified aminolipid and two unidentified lipids. The G+C content of the genomic DNA was 66.3 mol%. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain SAG6T formed a tight phyletic lineage within the genus Roseovarius. Strain SAG6T was most closely related to Roseovarius indicus B108T with 97.6 % 16S rRNA gene sequence similarity. Based on phenotypic, chemotaxonomic and molecular features, strain SAG6T clearly represents a novel species of the genus Roseovarius, for which the name Roseovarius confluentis sp. nov. is proposed. The type strain is SAG6T (=KACC 18598T=JCM 31541T).
authors.affiliation: Department of Life Science, Chung-Ang University, Seoul 06974, Republic of Korea.
authors.forename: Xiaomeng
authors.initials: X
authors.lastname: Jia
authors.affiliation: National Research Laboratory of Molecular Microbiology and Toxicology, Department of Agricultural Biotechnology, and Center for Food Safety and Toxicology, Seoul National University, Seoul 08826, Republic of Korea.
authors.forename: Hye Rim
authors.initials: HR
authors.lastname: Kim
authors.affiliation: Department of Life Science, Chung-Ang University, Seoul 06974, Republic of Korea.
authors.forename: Baolei
authors.initials: B
authors.lastname: Jia
authors.affiliation: Department of Life Science, Chung-Ang University, Seoul 06974, Republic of Korea.
authors.forename: Hye Hee
authors.initials: HH
authors.lastname: Jeon
authors.affiliation: National Marine Biodiversity Institute of Korea, Seocheon, Chungchungnam-do 33662, Republic of Korea.
authors.forename: Kyunghwa
authors.initials: K
authors.lastname: Baek
authors.affiliation: National Research Laboratory of Molecular Microbiology and Toxicology, Department of Agricultural Biotechnology, and Center for Food Safety and Toxicology, Seoul National University, Seoul 08826, Republic of Korea.
authors.forename: Sang Ho
authors.initials: SH
authors.lastname: Choi
authors.affiliation: Department of Life Science, Chung-Ang University, Seoul 06974, Republic of Korea.
authors.forename: Che Ok
authors.initials: CO
authors.lastname: Jeon
mesh_terms: D015373:Bacterial Typing Techniques; D001482:Base Composition; D004269:DNA, Bacterial / Q000235:genetics; D063366:Estuaries; D005227:Fatty Acids / Q000737:chemistry; D019015:Geologic Sediments / Q000382:microbiology*; D010743:Phospholipids / Q000737:chemistry; D010802:Phylogeny; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D056910:Republic of Korea; D041902:Rhodobacteraceae / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D012623:Seawater / Q000382:microbiology*; D017422:Sequence Analysis, DNA; D014451:Ubiquinone / Q000737:chemistry
chemical_list: D004269:DNA, Bacterial; D005227:Fatty Acids; D010743:Phospholipids; D012336:RNA, Ribosomal, 16S; D014451:Ubiquinone; C025204:Ubiquinone Q2