A novel bacterium, MTT-39, was isolated from a sample of marine sediment collected at Tottori on the coast of the Sea of Japan. Cells were Gram-negative, rod-shaped and non-motile. The bacterium formed yellowish brown colonies on marine agar 2216. Although the 16S rRNA gene sequence of strain MTT-39 classified this strain as a member of the family , the maximum sequence similarity obtained was only 91.5 % (with OT-1). In the maximum-likelihood tree based on 16S rRNA gene sequences, the novel bacterium clustered with the type strains of , , and . The novel strain exhibited the following characteristics: the predominant fatty acids in cells grown on artificial seawater-based tryptic soya agar were iso-C, iso-C and iso-C 3-OH, the major respiratory quinone was MK-6 and the DNA G+C content was 35 mol%. On the basis of its distinct phenotypic traits and the phylogenetic distance between this marine isolate and other recognized taxa, strain MTT-39 represents a novel genus and species of the family , for which the name gen. nov., sp. nov. is proposed. The type strain of the type species is MTT-39 (=NBRC 102624=KCTC 22214=CGMCC 1.7058).


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