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Int J Syst Evol Microbiol 59 (2009), 1754-1758; DOI  10.1099/ijs.0.007955-0
© 2009 International Union of Microbiological Societies

Flavobacterium chungangense sp. nov., isolated from a freshwater lake

Ju-Hyoung Kim, Ki-Yeon Kim and Chang-Jun Cha

Department of Biotechnology and BET institute, Chung-Ang University, Anseong 456-756, Republic of Korea

Correspondence
Chang-Jun Cha
cjcha{at}cau.ac.kr

A yellow-pigmented, rod-shaped, Gram-staining-negative, aerobic bacterial strain, designated CJ7T, was isolated from a freshwater lake at Chung-Ang University in Anseong, South Korea. Results from 16S rRNA gene sequence analysis revealed that the isolate was phylogenetically affiliated with members of the genus Flavobacterium. Strain CJ7T showed sequence similarity values of 91.5–98.0 % to the type strains of recognized Flavobacterium species. The DNA–DNA relatedness between strain CJ7T and Flavobacterium hercynium DSM 18292T, which showed the highest 16S rRNA gene sequence similarity, was 25.4 %. The predominant cellular fatty acids were iso-C15 : 0 (18.3 %), summed feature 3 (comprising iso-C15 : 0 2-OH and/or C16 : 1{omega}7c) (16.1 %), iso-C17 : 0 3-OH (8.9 %), iso-C15 : 0 3-OH (7.2 %), iso-C17 : 1{omega}9c (6.1 %) and iso-C15 : 1 (5.9 %). Flexirubin-type pigments were absent. The major isoprenoid quinone was menaquinone-6. The DNA G+C content was 34.5 mol%. The results obtained from this study, with a polyphasic taxonomic approach, suggested that strain CJ7T represents a novel species of the genus Flavobacterium for which the name Flavobacterium chungangense sp. nov. is proposed. The type strain is CJ7T (=KACC 13353T=JCM 15651T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain CJ7T is EU924275.

A transmission electron micrograph of cells of strain CJ7T is available as supplementary material with the online version of this paper.






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