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Virgibacillus dokdonensis sp. nov., isolated from a Korean island, Dokdo, located at the edge of the East Sea in Korea

Korea Research Institute of Bioscience and Biotechnology (KRIBB), PO Box 115, Yusong, Taejon, South Korea

Correspondence
Tae-Kwang Oh
otk{at}kribb.re.kr
Jung-Hoon Yoon
jhyoon{at}kribb.re.kr

A Gram-variable, motile, endospore-forming, slightly halophilic bacterial strain, DSW-10^T, was isolated from Dokdo, an island located at the edge of the East Sea, Korea, and was characterized taxonomically by using a polyphasic approach. This isolate grew optimally at 37 °C and in the presence of 4–5 % NaCl. Strain DSW-10^T had cell-wall peptidoglycan based on meso-diaminopimelic acid, MK-7 as the predominant menaquinone, and anteiso-C_{15 : 0}, iso-C_{15 : 0}, anteiso-C_{17 : 0} and iso-C_{16 : 0} as major fatty acids. Major polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine and unidentified phospholipids. The DNA G+C content was 36·7 mol%. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain DSW-10^T is phylogenetically affiliated to the genus Virgibacillus, and exhibited sequence similarity of 95·3–98·7 % to the type strains of Virgibacillus species. DNA–DNA relatedness levels between strain DSW-10^T and the type strains of some phylogenetically related Virgibacillus species were in the range 8·4–17·5 %. On the basis of phenotypic properties and phylogenetic and genetic distinctiveness, strain DSW-10^T (=KCTC 3933^T=DSM 16826^T) was classified as the type strain of a novel Virgibacillus species, for which the name Virgibacillus dokdonensis sp. nov. is proposed.

Published online ahead of print on 22 April 2005 as DOI 10.1099/ijs.0.63613-0.

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain DSW-10^T is AY822043.

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