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Donghaeana dokdonensis gen. nov., sp. nov., isolated from sea water

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

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

A Gram-negative, non-motile, non-spore-forming and rod-shaped bacterial strain, DSW-6^T, was isolated from sea water and subjected to a polyphasic study. Strain DSW-6^T grew optimally at 25 °C, in the presence of 2 % (w/v) NaCl and at pH 7·0–8·0. It was characterized chemotaxonomically as having MK-6 as the predominant menaquinone and iso-C_{15 : 0}, anteiso-C_{15 : 0}, iso-C_{17 : 0} 3-OH and C_{15 : 0} as the major fatty acids (>10 % of total fatty acids). Major polar lipids were phosphatidylethanolamine, unidentified phospholipids and amino-group-containing lipids that are ninhydrin-positive. The DNA G+C content was 36·9 mol%. Phylogenetic analyses based on 16S rRNA gene sequences showed that strain DSW-6^T forms an independent line of descent within the family Flavobacteriaceae. The 16S rRNA gene sequence of strain DSW-6^T exhibited similarity values of less than 94·7 % to the sequences of other members of the family Flavobacteriaceae. Strain DSW-6^T could be distinguished from other phylogenetically related genera by differences in several phenotypic properties. Therefore, in view of the combined phenotypic and phylogenetic data, it is proposed that strain DSW-6^T (=KCTC 12402^T=DSM 17205^T) represents a novel genus and species, Donghaeana dokdonensis gen. nov., sp. nov.

The GenBank/EMBL/DDBJ accession number for the 16S rRNA gene sequence of strain DSW-6^T is DQ017065.

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