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Int J Syst Evol Microbiol 56 (2006), 2185-2188; DOI  10.1099/ijs.0.64330-0
© 2006 International Union of Microbiological Societies

Glaciecola nitratireducens sp. nov., isolated from seawater

Keun Sik Baik1, Yoon-Dong Park2, Chi Nam Seong1, Eun Mi Kim1,3, Kyung Sook Bae4 and Jongsik Chun2

1 Department of Biology, College of Natural Sciences, Sunchon National University, Sunchon 540-742, Republic of Korea
2 School of Biological Sciences and Institute of Microbiology, Seoul National University, NS70, 56-1 Shillim-dong, Kwanak-gu, Seoul 151-742, Republic of Korea
3 Department of Dental Hygiene, Kwangyang Health College, Kwangyang 545-703, Republic of Korea
4 Korea Research Institute of Bioscience and Biotechnology, Yusung PO Box 115, Taejon 305-600, Republic of Korea

Correspondence
Jongsik Chun
jchun{at}snu.ac.kr

A marine bacterial strain, FR1064T, was isolated from a surface seawater sample collected off Jeju Island, South Korea. Phylogenetic analysis based on 16S rRNA gene sequences indicated that the isolate belonged to the Gammaproteobacteria and was related to the genus Glaciecola with 97.6 % sequence similarity to Glaciecola pallidula, its nearest phylogenetic neighbour. DNA–DNA relatedness between strain FR1064T and G. pallidula ACAM 615T was 55 %. Cells of the novel isolate were Gram-negative, aerobic, rod-shaped, motile and halophilic, with an optimum sea salts concentration of 4–7 %. The major fatty acids were straight-chain saturated (C16 : 0), summed feature 3 and monounsaturated fatty acid C18 : 1. The DNA G+C content was 44 mol%. Several phenotypic characteristics differentiated the novel isolate from all previously described members of the genus Glaciecola. The polyphasic data obtained in this study clearly demonstrate that strain FR1064T represents a novel species of the genus Glaciecola. The name Glaciecola nitratireducens sp. nov. is therefore proposed, with strain FR1064T (=KCTC 12276T=JCM 12485T) as the type strain.

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain FR1064T is AY787042.




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