The taxonomic status of a marine actinomycete isolated from the sponge sp. collected from Cebu, Philippines, was established using both phenotypic and genotypic data. Strain SPE 10-1 exhibited chemotaxonomic and morphological characteristics that were consistent with those of members of the genus . It showed a strict requirement for salt and is the first obligate marine bacterium of the genus to be isolated. The principal isoprenoid quinone detected was MK-9(H). The fatty acid pattern consisted mainly of terminally branched iso and anteiso fatty acids. The DNA G+C content was 72.6 mol%. Analysis of the 16S rRNA gene sequence supported affiliation of the strain with the genus ; the type strain of was the closest phylogenetic relative (96 % sequence similarity). Sequence similarities of strain SPE 10-1 to other type strains of this genus were 93–95 %. It is proposed that strain SPE 10-1 should be classified in the genus as a representative of sp. nov. The type strain of is SPE 10-1 (=DSM 45019=CIP 109355).


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