RT Journal Article SR Electronic(1) A1 Liu, Ying A1 Xu, Cheng-Jun A1 Jiang, Jia-Tong A1 Liu, Ying-Hao A1 Song, Xue-Feng A1 Li, Hao A1 Liu, Zhi-PeiYR 2010 T1 Catellibacterium aquatile sp. nov., isolated from fresh water, and emended description of the genus Catellibacterium Tanaka et al. 2004 JF International Journal of Systematic and Evolutionary Microbiology, VO 60 IS 9 SP 2027 OP 2031 DO https://doi.org/10.1099/ijs.0.017632-0 PB Microbiology Society, SN 1466-5034, AB A Gram-negative, rod-shaped, non-pigmented, non-spore-forming bacterial strain that was motile by a single polar flagellum, designated A1-9T, was isolated from Daqing reservoir in north-east China and its taxonomic position was studied using a polyphasic approach. Strain A1-9T was non-halophilic, strictly aerobic and heterotrophic and lacked carotenoids, internal membranes and genes for photosynthesis (puf genes). Strain A1-9T grew at 10–40 °C (optimum, 25–30 °C) and pH 5.5–9.0 (optimum, pH 6.0–6.5) and tolerated up to 1.0 % NaCl (w/v). Neither phototrophic nor fermentative growth was observed. The predominant ubiquinone was Q-10 and the major fatty acid was C18 : 1 ω7c (70 %). The DNA G+C content was 64.4 mol% (T m). Phylogenetic analyses based on the 16S rRNA gene sequence revealed that strain A1-9T, together with Catellibacterium nectariphilum AST4T, formed a deep line within the ‘Rhodobacter clade’ of the family Rhodobacteraceae and strain A1-9T showed 94.2 % 16S rRNA gene sequence similarity to C. nectariphilum AST4T. On the basis of phenotypic, chemotaxonomic and phylogenetic data, strain A1-9T is considered to represent a novel species of the genus Catellibacterium, for which the name Catellibacterium aquatile sp. nov. is proposed. The type strain is A1-9T (=CGMCC 1.7029T =NBRC 104254T)., UL https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/ijs.0.017632-0