Biodiv Sci ›› 2001, Vol. 09 ›› Issue (2): 129-137.  DOI: 10.17520/biods.2001020

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Classification of Streptomyces with the V2 variable region in 16S rDNA

XU Ping,ZHANG Li-Ping,YU Li-Yan   

  1. 1 The College of Life Science , Hebei University , Baoding 071002
    2 Instit ute of Medical Biotechnology , Chinese Academy of Medical Sciences , Beijing 100050
  • Received:2001-01-02 Revised:2001-03-19 Online:2001-05-20 Published:2001-05-20

Abstract: Partial nucleotide sequences (120 bp) of the 16S rRNA gene (rDNA) containing V22 variable region were compared in 357 strains of Streptomyces . Most of the Streptomyces strains fell into one large cluster-group. By sharing the same 16S rDNA sequences or very high similarity , they were clustered into five major , three middle and eight minor clusters , and 19 strains recovered as single member clusters. The result demonst rated that the phenotypic clusters , which contains st rains that are different in terms of morphologic characteristics , such as spore color and spore surface , is very heterogeneous from a molecular systematic stand point .