International Journal of Systematic and Evolutionary Microbiology, Vol 50, 505-509, Copyright © 2000 by Society for General Microbiology

ARTICLES

Streptomyces thermocoprophilus sp. nov., a cellulase-free endo-xylanase-producing streptomycete

B Kim, AM Al-Tai, KS Bum, P Somasundaram and M Goodfellow
Department of Agricultural and Environmental Science, University of Newcastle, Newcastle upon Tyne NE1 7RU, UK

The taxonomic position of a thermophilic actinomycete strain isolated from poultry faeces was examined using a polyphasic approach. The isolate, designated B19(T), was assigned to the genus Streptomyces on the basis of chemotaxonomic and morphological criteria. An almost complete 16S rRNA gene (rDNA) sequence obtained for the test strain was compared with those of representative streptomycetes, notably thermophilic streptomycetes. 16S rDNA sequence data not only supported the assignment of the strain to the genus Streptomyces but also showed that the isolate formed a distinct phyletic line within the evolutionary branch composed of Streptomyces thermodiastaticus and related species. The strain was distinguished from related validly described Streptomyces species by a number of phenotypic properties. It is, therefore, proposed that strain B19(T) be classified in the genus Streptomyces as Streptomyces thermocoprophilus sp. nov.

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