JOURNAL ARTICLE

Flavobacterium maotaiense sp. nov., isolated from freshwater

Qingqing Feng, Yuan Gao, Yuichi Nogi, Xu Tan, Lu Han, Yali Zhang, Jie Lv
International Journal of Systematic and Evolutionary Microbiology 2015, 65: 171-6
25313092
Two novel strains, T9(T) and T10, were isolated from water samples collected from Chishui River flowing through Maotai town, Guizhou, south-west China. The isolates were yellow-pigmented, Gram-reaction-negative, rod-shaped, non-motile and aerobic. Phylogenetic analysis based on 16S rRNA gene sequences showed that the isolates belonged to the genus Flavobacterium, and showed highest similarities to Flavobacterium hibernum DSM 12611(T) (97.0 %), followed by Flavobacterium granuli Kw05(T) (96.7 %) and Flavobacterium pectinovorum DSM 6368(T) (96.7 %). The novel strains were able to grow at 20-37 °C (optimum 25 °C), pH 7.0-10.0 (optimum pH 7.0-8.0) and with 0-0.5 % (w/v) NaCl (optimum 0.5 %). The predominant fatty acids were iso-C15 : 0, C16 : 1ω7c, anteiso-C15 : 0, C15 : 0, iso-C15 : 0 3-OH and iso-C15 : 1ω10c, and menaquinone-6 (MK-6) was the main respiratory quinone. The major polar lipids were phosphatidylethanolamine, one unknown glycolipid, two unknown aminolipids and two unidentified lipids. The DNA G+C contents of strains T9(T) and T10 were 37.7 and 36.4 mol%, respectively. According to the phenotypic and genetic data, strains T9(T) and T10 represent a novel species in the genus Flavobacterium, for which the name Flavobacterium maotaiense sp. nov. is proposed. The type strain is T9(T) ( = CGMCC 1.12712(T) = JCM 19927(T)).

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