title: Classification of acidophilic, neutrotolerant and neutrophilic streptomycetes by nucleotide sequencing of 5S ribosomal RNA.
abstract: Complete 5S ribosomal RNA sequences were obtained for four acidophilic actinomycetes, seven neutrophilic streptomycetes and a strain of Streptoverticillium baldaccii. All of the organisms contained RNAs belonging to the 120 nucleotide type. An evolutionary tree was generated after combining the test data with results from similar studies on representative Gram-positive bacteria. The acidophilic, neutrotolerant and neutrophilic actinomycetes were recovered in a distinct cluster that was equated with the genus Streptomyces. The sequence data support the view that the genera Chainia, Elytrosporangium, Kitasatoa and Microellobosporia should be considered as synonyms of the genus Streptomyces. The recovery of the Streptoverticillium baldaccii strain on the fringe of the Streptomyces cluster is also consistent with current trends in the taxonomy of these organisms. Further work is needed to determine the taxonomic status of the two streptomycete subgroups that comprised the streptomycete cluster.
authors.affiliation: Korean Collection for Type Cultures, Korea Institute of Science and Technology, Daejeon.
authors.forename: Y H
authors.initials: YH
authors.lastname: Park
authors.forename: D G
authors.initials: DG
authors.lastname: Yim
authors.forename: E
authors.initials: E
authors.lastname: Kim
authors.forename: Y H
authors.initials: YH
authors.lastname: Kho
authors.forename: T I
authors.initials: TI
authors.lastname: Mheen
authors.forename: J
authors.initials: J
authors.lastname: Lonsdale
authors.forename: M
authors.initials: M
authors.lastname: Goodfellow
mesh_terms: D000192:Actinomycetales / Q000145:classification / Q000235:genetics; D001483:Base Sequence; D005075:Biological Evolution; D006863:Hydrogen-Ion Concentration; D008969:Molecular Sequence Data; D010802:Phylogeny; D012329:RNA, Bacterial / Q000235:genetics; D012341:RNA, Ribosomal, 5S / Q000235:genetics*; D012689:Sequence Homology, Nucleic Acid; D013302:Streptomyces / Q000145:classification / Q000235:genetics; D013306:Streptomycetaceae / Q000145:classification* / Q000235:genetics
chemical_list: D012329:RNA, Bacterial; D012341:RNA, Ribosomal, 5S