title: Mesoflavibacter aestuarii sp. nov., a zeaxanthin-producing marine bacterium isolated from seawater.
abstract: An orange, rod-shaped, Gram-reaction-negative, aerobic and gliding bacterial strain devoid of flagella, designated strain KYW614(T), was isolated from seawater collected from Gwangyang Bay, Republic of Korea. Zeaxanthin was the major carotenoid pigment produced and flexirubin-type pigments were not produced. Phylogenetic analysis based on 16S rRNA gene sequences indicated that strain KYW614(T) belonged to the family Flavobacteriaceae and it was most closely related to Mesoflavibacter zeaxanthinifaciens TD-ZX30(T) (96.5%, sequence similarity). The predominant cellular fatty acids of strain KYW614(T) were iso-C(15 : 1) G (10.5%), summed feature 3 (C(16 : 1)ω7c/C(16 : 1)ω6c; 10.0%), iso-C(15 : 0) (9.5%), C(15 : 0) (7.5%) and iso-C(17 : 0) 3-OH (7.4%). MK-6 was the only isoprenoid quinone and the DNA G+C content was 32.6 mol%. Data from a polyphasic taxonomic study suggested that the isolate represents a novel species in the genus Mesoflavibacter, for which the name Mesoflavibacter aestuarii sp. nov. is proposed. The type strain is KYW614(T) ( = KCTC 32269(T) = JCM 19524(T)).
authors.affiliation: Department of Biology, College of Life Science and Natural Resources, Sunchon National University, Suncheon 540-950, Republic of Korea.
authors.forename: Ji Hee
authors.initials: JH
authors.lastname: Lee
authors.affiliation: Department of Biology, College of Life Science and Natural Resources, Sunchon National University, Suncheon 540-950, Republic of Korea.
authors.forename: Yeoung Min
authors.initials: YM
authors.lastname: Hwang
authors.affiliation: Division of Life Sciences, Korea Basic Science Institute, Daejeon 305-806, Republic of Korea.
authors.forename: Keun Sik
authors.initials: KS
authors.lastname: Baik
authors.affiliation: Department of Science and Technology, College of Life Science and Natural Resources, Sunchon National University, Suncheon 540-950, Republic of Korea.
authors.forename: Kap Seong
authors.initials: KS
authors.lastname: Choi
authors.affiliation: Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-742, Republic of Korea.
authors.forename: Jong-Ok
authors.initials: JO
authors.lastname: Ka
authors.affiliation: Department of Biology, College of Life Science and Natural Resources, Sunchon National University, Suncheon 540-950, Republic of Korea.
authors.forename: Chi Nam
authors.initials: CN
authors.lastname: Seong
mesh_terms: D015373:Bacterial Typing Techniques; D001482:Base Composition; D004269:DNA, Bacterial / Q000235:genetics; D005227:Fatty Acids / Q000737:chemistry; D041965:Flavobacteriaceae / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification; D008969:Molecular Sequence Data; D010802:Phylogeny; D010858:Pigmentation; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D056910:Republic of Korea; D012623:Seawater / Q000382:microbiology*; D017422:Sequence Analysis, DNA; D024482:Vitamin K 2 / Q000031:analogs & derivatives / Q000737:chemistry; D024341:Xanthophylls / Q000096:biosynthesis*; D065146:Zeaxanthins
chemical_list: D004269:DNA, Bacterial; D005227:Fatty Acids; D012336:RNA, Ribosomal, 16S; D024341:Xanthophylls; D065146:Zeaxanthins; D024482:Vitamin K 2; C042455:menaquinone 6