Abstract
Three strains of actinomycetes that formed spore chains were isolated from a paddy field and forest soil and subjected to a polyphasic taxonomic characterization study. The cell wall peptidoglycan contained ll-diaminopimelic acid and glycine. The major isoprenoid quinones were MK-9(H(8)) and MK-9(H(6)), and the major cellular fatty acids were iso-C(16 : 0) and anteiso-C(17 : 0). Phylogenetic analysis based on 16S rRNA gene sequences showed that these organisms belonged in a monophyletic cluster with members of the genus Catenulispora. According to the physiological, biochemical and chemotaxonomic data, the novel organisms could be differentiated from recognized members of the genus Catenulispora. Based on the phenotypic and genotypic data, the three strains are considered to represent two novel species of the genus Catenulispora, for which the names Catenulispora subtropica sp. nov. for strains TT 99-48(T) (type strain; =NBRC 103395(T)=KCTC 19328(T)) and TT 01-19 (=NBRC 103396), and Catenulispora yoronensis sp. nov. (type strain TT N02-20(T)=NBRC 103397(T)=KCTC 19327(T)) are proposed. An emended description of the genus Catenulispora is given.
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