Streptomyces bathyalis sp. nov., an actinobacterium isolated from the sponge in a deep sea.

A novel actinobacterium, designated ASO4wet, was isolated from the unidentified sponge (SO4) in the deep sea collected of the North Atlantic Ocean. Study of 16S rRNA gene sequences indicated that strain ASO4wet is a member of the genus Streptomyces and showed the closest similarities to Streptomyces karpasiensis K413 (98.87 %), Streptomyces glycovorans YIM M 10366 (98.38 %), and Streptomyces abyssalis YIM M 10400 (97.53 %). Strain ASO4wet contained MK-9(H8) as the predominant menaquinone and the major fatty acids are iso-C, anteiso-C, and iso-C. Polyphasic taxonomy was carried out between strain ASO4wet and its phylogenetically closely related Streptomyces strains, which further elucidated their relatedness and revealed that strain ASO4wet could be distinguished from currently known Streptomyces species. Strain ASO4wet clearly represents a novel species in genus Streptomyces. We propose the name Streptomyces bathyalis sp. nov., with the type strain ASO4wet (= DSM 106605 = NCCB 100657). Analysis of the whole-genome sequence of S. bathyalis revealed that genome size is 7,377,472 bp with 6332 coding sequences.