title: Comamonas badia sp. nov., a floc-forming bacterium isolated from activated sludge.
abstract: Strain IAM 14839, isolated from activated sludge in Japan, forms a visible floc and grows in the flocculated state. This bacterium is Gram-negative, rod-shaped, strictly aerobic and highly motile with a single polar flagellum. Both oxidase and catalase activities are positive. No growth was observed on sugars. The strain can grow at 20 degrees C, but does not grow at 37 degrees C. The G+C content of DNA is 66.3 mol% and Q-8 is the major quinone. The major cellular fatty acids are 16:1omega7c, 16:0, 18:1omega7c, 2OH 16:0, 3OH 10:0. The 16S rDNA sequence analysis indicated that the bacterium clustered within the genus Comamonas. On the basis of the phylogenetic analysis and phenotypic properties, it is proposed that the strain IAM 14839T be classified in a novel species of the genus Comamonas, Comamonas badia sp. nov. The type strain is IAM 14839T (=KCTC 12244T ).
authors.affiliation: Institute of Molecular and Cellular Biosciences, The University of Tokyo, Bunkyo-ku, Tokyo 113-0032, Japan. tagoys@iam.u-tokyo.ac.jp
authors.forename: Yoshitaka
authors.initials: Y
authors.lastname: Tago
authors.forename: Akira
authors.initials: A
authors.lastname: Yokota
mesh_terms: D001482:Base Composition; D020585:Comamonas / Q000737:chemistry / Q000145:classification / Q000302:isolation & purification*; D005227:Fatty Acids / Q000032:analysis; D010802:Phylogeny; D012722:Sewage / Q000382:microbiology*
chemical_list: D005227:Fatty Acids; D012722:Sewage