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Int J Syst Evol Microbiol 58 (2008), 607-611; DOI  10.1099/ijs.0.65475-0
© 2008 International Union of Microbiological Societies

Chryseobacterium aquifrigidense sp. nov., isolated from a water-cooling system

Seong Chan Park1, Mi Sun Kim1, Keun Sik Baik1, Eun Mi Kim1,2, Moon Soo Rhee3 and Chi Nam Seong1

1 Department of Biology, College of Natural Sciences, Sunchon National University, Suncheon 540-742, Republic of Korea
2 Department of Dental Hygiene, Gwangyang Health College, Gwangyang 545-703, Republic of Korea
3 Korean Collection for Type Cultures, Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-600, Republic of Korea

Correspondence
Chi Nam Seong
scnu{at}scnu.ac.kr

A non-motile, yellow-pigmented bacterium, designated strain CW9T, was isolated from a water-cooling system in Gwangyang, Republic of Korea. The cells were Gram-negative, catalase- and oxidase-positive, short rods. The major fatty acids were iso-C15 : 0 (45.5 %), iso-C17 : 1{omega}9c (14.4 %), iso-C17 : 0 3-OH (13.0 %) and summed feature 3 (comprising iso-C15 : 0 2-OH and/or C16 : 1{omega}7c; 8.8 %). The DNA G+C content was 35.6 mol%. A phylogenetic tree based on 16S rRNA gene sequences showed that strain CW9T formed a lineage within the genus Chryseobacterium and was closely related to Chryseobacterium gleum ATCC 35910T (98.4 % sequence similarity) and Chryseobacterium indologenes ATCC 29897T (97.8 % sequence similarity). Phenotypic characteristics and DNA–DNA relatedness data served to distinguish strain CW9T from these two species. On the basis of the evidence presented in this study, strain CW9T represents a novel species of the genus Chryseobacterium, for which the name Chryseobacterium aquifrigidense sp. nov. is proposed. The type strain is CW9T (=KCTC 12894T=JCM 14756T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain CW9T is EF644913.

Biolog GN2 MicroPlate results for strain CW9T are presented in a supplementary table available with the online version of this paper.






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