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Int J Syst Evol Microbiol 59 (2009), 1609-1614; DOI  10.1099/ijs.0.006866-0
© 2009 International Union of Microbiological Societies

Tenacibaculum crassostreae sp. nov., isolated from the Pacific oyster, Crassostrea gigas

Young Sun Lee1, Keun Sik Baik1, So Yeon Park1, Eun Mi Kim1,2, Dong-Heon Lee3, Hyung-Yeel Kahng3, Che Ok Jeon4 and Jae Sung Jung1

1 Department of Biology, Sunchon National University, Suncheon 540-742, Republic of Korea
2 Department of Dental Hygiene, Gwangju Health College University, Gwangju 506-701, Republic of Korea
3 Department of Environmental Education, Sunchon National University, Suncheon 540-742, Republic of Korea
4 Department of Life Science, Chung-Ang University, Seoul 156-756, Republic of Korea

Correspondence
Jae Sung Jung
jjung{at}sunchon.ac.kr

A rod-shaped, yellow-pigmented, aerobic, Gram-negative bacterium, designated strain JO-1T, was isolated from an apparently healthy Pacific oyster, Crassostrea gigas, collected at Wan Island, Korea. It grew at 15–37 °C (optimum 30 °C) only in the presence of sea salts. Strain JO-1T hydrolysed casein, Tween 80 and starch. The major fatty acids were iso-C15 : 0 (23.8 %), summed feature 3 (comprising C16 : 1{omega}7c and/or iso-C15 : 0 2-OH; 14.5 %) and iso-C15 : 1 G (14.1 %). Analysis of the 16S rRNA gene sequence indicated that strain JO-1T was a member of the genus Tenacibaculum in the family Flavobacteriaceae, with sequence similarity of 94.6–97.8 % to the type strains of recognized members of the genus. The G+C content of the genomic DNA was 31.4 mol%. DNA–DNA relatedness levels between strain JO-1T and the five closest relatives, Tenacibaculum litoreum KCCM 42115T, T. lutimaris KCTC 12302T, T. aestuarii KCTC 12569T, T. mesophilum DSM 13764T and T. adriaticum JCM 14633T, were less than 28 %. Phylogenetic analyses and differences in physiological and biochemical characteristics suggested that strain JO-1T (=KCTC 22329T =JCM 15428T) should be classified as the type strain of a novel species within the genus Tenacibaculum, for which the name Tenacibaculum crassostreae sp. nov. is proposed.

The GenBank accession number for the 16S rRNA gene sequence of strain JO-1T is EU428783.

A scanning electron micrograph of cells of strain JO-1T is available as a supplementary figure with the online version of this paper.






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