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Tsukamurella spongiae sp. nov., a novel actinomycete isolated from a deep-water marine sponge

¹ Department of Biological Sciences, University of Alabama, Tuscaloosa, AL 35487, USA
² Harbor Branch Oceanographic Institution, Division of Biomedical Marine Research, 5600 US 1 North, Fort Pierce, FL 34946, USA
³ Department of Biology, University of Alabama at Birmingham, Birmingham, AL 35294, USA

Correspondence
Julie B. Olson
jolson{at}bama.ua.edu

A Gram-positive, rod-shaped, non-spore-forming bacterium (strain K362^T) was isolated from a deep-water marine sponge collected off the coast of Curaçao in the Netherlands Antilles. On the basis of 16S rRNA gene sequence similarities, strain K362^T was shown to belong to the genus Tsukamurella, being most closely related to Tsukamurella pulmonis (99.2 %), Tsukamurella tyrosinosolvens (98.9 %), Tsukamurella strandjordii (98.8 %), Tsukamurella pseudospumae (98.8 %) and Tsukamurella spumae (98.8 %). A combination of the substrate utilization patterns, the fatty acid and mycolic acid profiles and the DNA–DNA hybridization results supported the affiliation of strain K362^T to the genus Tsukamurella and enabled the genotypic and phenotypic differentiation of strain K362^T from the seven recognized Tsukamurella species. Strain K362^T therefore represents a novel species of the genus Tsukamurella, for which the name Tsukamurella spongiae sp. nov. is proposed. The type strain is K362^T (=DSM 44990^T=NRRL B-24467^T).

The fatty acid profiles of strain K362^T and other species of the genus Tsukamurella are presented in a supplementary table with the online version of this paper.