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Marixanthomonas ophiurae gen. nov., sp. nov., a marine bacterium of the family Flavobacteriaceae isolated from a deep-sea brittle star

¹ Pacific Institute of Bioorganic Chemistry, Far-Eastern Branch, Russian Academy of Sciences, Prospect 100 Let Vladivostoku 159, 690022 Vladivostok, Russia
² Laboratory of Food Science and Technology, Department of Applied Biology and Chemistry, Tokyo University of Agriculture, 1-1-1 Sakuragaoka, Setagaya-ku, Tokyo 156-8502, Japan

Correspondence
Lyudmila A. Romanenko
lro{at}piboc.dvo.ru

An aerobic, Gram-negative, non-motile, yellow-pigmented bacterium, strain KMM 3046^T, was isolated from a deep-sea brittle star from the Fiji Sea and was subjected to a polyphasic taxonomic analysis. Strain KMM 3046^T grew at 5–32 °C and in the presence of 1–12 % (w/v) NaCl. It contained MK-6 as the predominant menaquinone and 3-OH i16 : 0, 3-OH i17 : 0 and 3-OH a17 : 0 as the major fatty acids. Phylogenetic analysis based on 16S rRNA gene sequences revealed that strain KMM 3046^T forms a distinct evolutionary lineage within the family Flavobacteriaceae (phylum Bacteroidetes), displaying 92.3–91.9 % sequence similarity with respect to Salegentibacter species. On the basis of the phenotypic and phylogenetic data, strain KMM 3046^T represents a novel genus and species of the family Flavobacteriaceae, for which the name Marixanthomonas ophiurae gen. nov., sp. nov. is proposed. The type strain of Marixanthomonas ophiurae is KMM 3046^T (=NRIC 0684^T=JCM 14121^T).

A maximum-likelihood phylogenetic tree, a scanning electron micrograph and a two-dimensional thin-layer chromatogram for strain KMM 3046^T are available as supplementary material in IJSEM Online.