Taxonomic status of Kitasatosporia, and proposed unification with Streptomyces on the basis of phenotypic and 16S rRNA analysis and emendation of Streptomyces Waksman and Henrici 1943, 339AL

Int J Syst Bacteriol. 1992 Jan;42(1):156-60. doi: 10.1099/00207713-42-1-156.


Species classified within the genus Kitasatosporia share many of the phenotypic characteristics typical of streptomycetes. By using a probabilistic identification scheme, they were identified with Streptomyces exfoliatus cluster 5, a species group within Streptomyces. The four species studied hybridized with a 16S rRNA genus probe for Streptomyces spp., indicating a close relationship between the two genera. The kitasatosporias were resistant to selected polyvalent streptomycete phages tested. Quantitative analysis showed that meso-diaminopimelic acid varied from 49 to 89% in Kitasatosporia species and from 1 to 16% in Streptomyces species depending on growth conditions. On the basis of 16S rRNA analysis, it is proposed to reduce Kitasatosporia to synonymy with Streptomyces. As a result, the new names proposed are Streptomyces mediocidicus comb. nov., Streptomyces phosalacineus comb. nov., Streptomyces setae comb. nov., and Streptomyces griseolosporeus comb. nov., nom. nov.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Base Sequence
  • Cell Wall / chemistry
  • Diaminopimelic Acid / analysis
  • Molecular Sequence Data
  • Phenotype
  • RNA Probes
  • RNA, Bacterial / chemistry*
  • RNA, Ribosomal, 16S / chemistry*
  • Sequence Homology, Nucleic Acid
  • Streptomyces / classification*
  • Streptomyces / genetics
  • Terminology as Topic


  • RNA Probes
  • RNA, Bacterial
  • RNA, Ribosomal, 16S
  • Diaminopimelic Acid