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Transfer of Catellatospora koreensis Lee et al. 2000 as Catelliglobosispora koreensis gen. nov., comb. nov. and Catellatospora tsunoense Asano et al. 1989 as Hamadaea tsunoensis gen. nov., comb. nov., and emended description of the genus Catellatospora Asano and Kawamoto 1986 emend. Lee and Hah 2002

Ismet Ara, Mohammad Abdul Bakir and Takuji Kudo

Japan Collections of Microorganisms, RIKEN BioResource Center, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan

Correspondence
Ismet Ara
ismet{at}lisci.kitasato-u.ac.jp

A polyphasic taxonomic analysis of all species of the genus Catellatospora with validly published names revealed morphological, phenotypic and chemotaxonomic heterogeneity. The type species, Catellatospora citrea, and Catellatospora methionotrophica, Catellatospora chokoriensis, Catellatospora coxensis and Catellatospora bangladeshensis had similar morphological and chemotaxonomical properties. Phylogenetic studies based on 16S rRNA gene sequences showed that Catellatospora koreensis and Catellatospora tsunoense were heterogeneous and were also heterogeneous with other species of the genus Catellatospora with respect to the menaquinone composition. DNA–DNA hybridization data showed that the type strains of Catellatospora koreensis and Catellatospora tsunoense were significantly different from each other and other recognized species in the genus Catellatospora. Therefore, on the basis of phenotypic, chemotaxonomic and genomic differences, two new genera with the names Catelliglobosispora gen. nov. and Hamadaea gen. nov. are proposed to accommodate two species classified originally as belonging to the genus Catellatospora and Catelliglobosispora koreensis gen. nov., comb. nov. and Hamadaea tsunoensis gen. nov., comb. nov. are described. The type species of the genus Catelliglobosispora is Catelliglobosispora koreensis (type strain LM 042^T=JCM 10976^T=DSM 44566^T=IMSNU 50729^T) and the type species of the genus Hamadaea is Hamadaea tsunoensis (type strain 6420-P^T=JCM 9105^T=DSM 44101^T=IMSNU 22005^T).

Present address: Laboratory of Biological Functions, Department of Drug Discovery Sciences, Kitasato Institute for Life Sciences, Kitasato University, 5-9-1 Shirokane, Minato-ku, Tokyo 108-8641, Japan.

The GenBank/EMBL/DDBJ accession numbers for the 16S rRNA gene sequences of Catellatospora koreensis IMSNU 50729^T and Catellatospora tsunoense IMSNU 22005^T are AF171700 and AF152110, respectively.

Tables showing 16S rRNA gene sequence similarities and chemotaxonomic characteristics of Catelliglobosispora koreensis gen. nov., comb. nov. and Hamadea tsunoensis gen. nov., comb. nov. and recognized species of the genus Catellatospora are available as supplementary material with the online version of this paper.

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