title: Characteristics of a pink-pigmented bacterium isolated from biofilm in a cooling tower in Tokyo, Japan.
abstract: Strain K-20, a Gram-negative, non-motile, non-spore-forming and strictly aerobic rod, which produces a pale pink pigment, was isolated from biofilm in a cooling tower in Tokyo, Japan. The taxonomic feature of the strain was studied using phenotypic tests and phylogenetic analysis. Phylogenetic analysis of 16S rRNA gene sequences showed that the strain was related to Roseomonas gilardii subsp. rosea, Roseomonas gilardii subsp. gilardii, Roseomonas cervicalis and Roseomonas mucosa at 94.3-94.6 sequence similarities. Growth occurred at 25-40 C and pH 5.0-10.0, optimal at 35 C and pH 7.0. Growth did not occur in the presence of >or=2% NaCl. The API 20NE identification system gave a positive result for urease, L-arabinose, potassium gluconate, adipic acid, malic acid and trisodium citrate (API code number 0201465). The predominant fatty acids of strain K-20 were C18:1Delta11 (50.8%) and C16:1 (17.2%). Cells contained ubiquinone 10 (Q-10) as the major quinone and the G+C content was 72.0 mol%. Based on phenotypic, chemotaxonomic and phylogenetic data, it was assumed that strain K-20 (=JCM 14634) is a novel species of the genus Roseomonas.
authors.affiliation: College of Environmental Health, Azabu University, Kanagawa, Japan. furuhata@azabu-u.ac.jp
authors.forename: Katsunori
authors.initials: K
authors.lastname: Furuhata
authors.forename: Keiichi
authors.initials: K
authors.lastname: Goto
authors.forename: Yuko
authors.initials: Y
authors.lastname: Kato
authors.forename: Keiko
authors.initials: K
authors.lastname: Saitou
authors.forename: Jun-ichi
authors.initials: J
authors.lastname: Sugiyama
authors.forename: Motonobu
authors.initials: M
authors.lastname: Hara
authors.forename: Shin-ichi
authors.initials: S
authors.lastname: Yoshida
authors.forename: Masafumi
authors.initials: M
authors.lastname: Fukuyama
mesh_terms: D001482:Base Composition; D001483:Base Sequence; D018441:Biofilms; D004269:DNA, Bacterial / Q000737:chemistry / Q000235:genetics; D005227:Fatty Acids / Q000032:analysis; D042082:Methylobacteriaceae / Q000145:classification / Q000235:genetics / Q000302:isolation & purification* / Q000378:metabolism; D008826:Microbial Sensitivity Tests; D008969:Molecular Sequence Data; D010802:Phylogeny; D010858:Pigmentation; D016133:Polymerase Chain Reaction; D012336:RNA, Ribosomal, 16S / Q000737:chemistry / Q000235:genetics; D016415:Sequence Alignment; D014041:Tokyo; D014871:Water Microbiology
chemical_list: D004269:DNA, Bacterial; D005227:Fatty Acids; D012336:RNA, Ribosomal, 16S