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Published online ahead of print on 9 October 2009 as doi:ijs.0.017707-0
 Int J Syst Evol Microbiol (2009); DOI 10.1099/ijs.0.017707-0
© 2009 International Union of Microbiological Societies
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Soonwooa buanensis gen. nov., sp. nov., a new member of the family Flavobacteriaceae isolated from seawater

Yochan Joung1, Jaeho Song2, Kiyoung Lee2, Hyun-Myung Oh2, Kiseong Joh1 and Jang-Cheon Cho2,3

1 Hankuk University of Foreign Studies;
2 Inha University

3 E-mail: chojc{at}inha.ac.kr

A Gram-reaction-negative, non-motile, non-gliding, strictly aerobic, pale yellow colony-forming, rod-shaped bacterial strain devoid of flagellar and gliding motility, designated HM0024T, was isolated from costal seawater of the Yellow Sea and subjected to a polyphasic taxonomy. Based on 16S rRNA gene sequence similarity analyses, strain HM0024T was most closely related to Chryseobacterium balustinum (94.4 %), Chryseobacterium scophthalmum (94.4 %) and Elizabethkingia meningoseptica (94.0 %), and shared less than 92 % sequence similarity with other members of the family Flavobacteriaceae. Phylogenetic analyses showed that strain HM0024T formed an independent phyletic line of descent within the family Flavobacteriaceae. The DNA G+C content of the strain was 29.6 mol% and its major cellular fatty acids were iso-C15:0, iso-C17:0 3-OH, iso-C17:0 {omega}7c and C16:1 {omega}6c/C16:1 {omega}7c. The major isoprenoid quinone was MK-6 and the major polar lipids were phosphatidylethanolamine and several aminolipids. Lower DNA G+C content, larger proportions of C16:1 {omega}6c/C16:1 {omega}7c, anteiso-C15:0 and iso-C16:0 3-OH, and several phenotypic characteristics differentiated strain HM0024T from phylogenetically related members of the family. On the basis of phenotypic and phylogenetic data, strain HM0024T (=KCTC 22689T =CECT 7503T) is classified in a novel genus and species, for which the name Soonwooa buanensis gen. nov., sp. nov. is proposed.






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