Yamamura, H., H. Ashizawa, Y. Nakagawa, M. Hamada, Y. Ishida, M. Otoguro, T. Tamura & M. Hayakawa 2011: Actinomycetospora iriomotensis sp. nov., a novel actinomycete isolated from a lichen sample. - Journal of Antibiotics 64(4): 289-292. [RLL List # 223 / Rec.# 33014] Abstract: An actinomycete strain, IR73-Li102T, was isolated from a lichen sample obtained from Iriomote Island, Japan, and subsequently characterized using a polyphasic approach. Comparative 16S rRNA gene sequence analysis revealed that strain IR73-Li102Thad the highest sequence similarities with Actinomycetospora chiangmaiensis YIM 0006T(98.3%), A. corticola 014-5T(98.1%) and A. rishiriensis RI109-Li102 T (98.0%). However, DNA-DNA hybridization assays, as well as physiological and biochemical analyzes, showed that strain IR73-Li102T could be clearly differentiated from its closest phylogenetic relatives. The strain contained meso-diaminopimelic acid, and arabinose and galactose were present in whole-cell hydrolysates. The predominant menaquinone was MK-8(H 4), and the diagnostic phospholipids were phosphatidylethanolamine, phosphatidylcholine, phosphatidylinositol and diphosphatidylglycerol. The major cellular fatty acid was iso-C 16:0 (58%). The chemotaxonomic properties of strain IR73-Li102 T were consistent with those shared by members of the genus Actinomycetospora. On the basis of the phenotypic features and DNA-DNA hybridization data, strain IR73-Li102 T ( NBRC 106365T KCTC 19783T) represents a novel species of the genus Actinomycetospora, for which the name Actinomycetospora iriomotensis sp. nov. is proposed.
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