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Owenweeksia hongkongensis gen. nov., sp. nov., a novel marine bacterium of the phylum ‘Bacteroidetes’

¹ Department of Biology, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, S. A. R., P. R. China
² Department of Biology, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, S. A. R., P. R. China

Correspondence
Madeline Wu
bomwu{at}ust.hk

An aerobic, Gram-negative, non-fermentative, rod-shaped, motile, orange-pigmented bacterium, UST20020801^T, was isolated from sea-water samples collected from Port Shelter, Hong Kong, S.A.R., China, in August 2002. The full 16S rRNA gene sequence of this strain shared only 87·5 % similarity with its nearest relative, Crocinitomix catalasitica, a species of the family Cryomorphaceae. However, strain UST20020801^T possessed menaquinone-6, a major respiratory quinone of members of the family Flavobacteriaceae. This strain contains unique fatty acids such as i15 : 1G, i17 : 19c, 2-OH 15 : 0, 15 : 16c and three unknown fatty acids of equivalent chain-length of 11·543, 13·565 and 16·582. Further analysis of its ecophysiology and biochemistry suggests that this strain represents a new genus in the phylum ‘Bacteroidetes’. The name Owenweeksia hongkongensis gen. nov., sp. nov. is proposed. The type strain is UST20020801^T (=NRRL B-23963^T=JCM 12287^T).

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of UST20020801^T is AB125062.

Micrographs of Owenweeksia hongkongensis UST20020801^T and a phylogenetic tree based on 16S rRNA gene sequences showing the relationship between strain UST20020801^T and related taxa are available as supplementary material in IJSEM Online.

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