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Brevibacterium marinum sp. nov., isolated from seawater

Department of Science Education, Cheju National University, Jeju 690-756, Republic of Korea

Correspondence
Soon Dong Lee
sdlee{at}cheju.ac.kr

A novel yellow-pigmented actinobacterium was isolated from seawater collected from Hwasun Beach in Jeju, Republic of Korea. A comparative analysis of the 16S rRNA gene sequence indicated that the organism, designated HFW-26^T, was closely related to members of the genus Brevibacterium. As found for other species of the genus Brevibacterium, strain HFW-26^T possessed meso-diaminopimelic acid as the diagnostic cell-wall diamino acid, contained MK-8(H₂) as the major menaquinone, contained polar lipids that included diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol and an unknown phospholipid, and had anteiso-C_{15 : 0} and anteiso-C_{17 : 0} as the predominant fatty acids. The G+C content of the DNA was 71.4 mol%. The phylogenetically closest relative was Brevibacterium picturae DSM 16132^T (99.0 % 16S rRNA gene sequence similarity). However, DNA–DNA hybridization of strain HFW-26^T showed 35.1–43.7 % relatedness with respect to B. picturae DSM 16132^T. The novel isolate could be clearly distinguished from B. picturae DSM 16132^T on the basis of some cultural, physiological and biochemical characteristics. A battery of phenotypic and genetic data obtained in this study suggest that strain HFW-26^T represents a novel species of the genus Brevibacterium, for which the name Brevibacterium marinum sp. nov. is proposed. The type strain is HFW-26^T (=JBRI 2001^T=KCTC 19221^T=DSM 18964^T).

Transmission electron micrographs of cells of strain HFW-26^T are available as a supplementary figure with the online version of this paper.

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