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Nocardioides dokdonensis sp. nov., an actinomycete isolated from sand sediment

¹ Department of Biology, College of Natural Sciences, Sunchon National University, Suncheon 540-742, Republic of Korea
² School of Biological Sciences, Seoul National University, Seoul 151-742, Republic of Korea

Correspondence
Chi Nam Seong
scnu{at}scnu.ac.kr

A strictly aerobic, non-motile, short rod-shaped actinomycete, designated strain FR1436^T, was isolated from sand sediment from a beach on Dokdo Island, Republic of Korea. The major menaquinone was MK-8(H₄), the predominant cellular fatty acid was iso-C_{16 : 0} (40.4 %) and the G+C content of the DNA was 69.1 mol%. A phylogenetic tree based on 16S rRNA gene sequences showed that strain FR1436^T formed a lineage within the genus Nocardioides and was closely related to Nocardioides marinisabuli SBS-12^T (97.8 % sequence similarity) and Nocardioides salarius CL-Z59^T (97.4 %). Phenotypic characteristics and DNA–DNA relatedness data served to distinguish strain FR1436^T from N. marinisabuli. On the basis of the evidence presented in this study, strain FR1436^T represents a novel species of the genus Nocardioides, for which the name Nocardioides dokdonensis sp. nov. is proposed. The type strain is FR1436^T (=KCTC 19309^T =JCM 14815^T).

Biolog GP2 MicroPlate results and the fatty acid composition for strain FR1436^T are available as supplementary material with the online version of this paper.

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