Journal of Industrial Microbiology

, Volume 17, Issue 3–4, pp 179–184 | Cite as

Genetic diversity of soil microorganisms assessed by analysis ofhsp70 (dnaK) sequences

  • W H Yap
  • X Li
  • T W Soong
  • J E Davies


The genetic diversity of a soil microbial community was assessed by analysis of clonedhsp70 sequences. A clone library was generated by polymerase chain reaction-mediated amplification of a 650-base pair fragment of thehsp70 gene, using DNA extracted from soil, without culturing the microorganisms. Fifty-five random clones were sequenced and their amino acid sequences deduced. Analysis of the amino acid sequence of the clones revealed the presence of signature sequences in common with known prokaryotic and lower eukaryotic HSP70 homologs. None of the 55 analyzed sequences were identical to each other or to a published sequence. These results confirm the presence of considerable genetic diversity within soil microbial communities, the major proportion of which remains uncharacterized.


hsp70 soil microorganisms soil DNA microbial diversity 


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Copyright information

© Society for Industrial Microbiology 1996

Authors and Affiliations

  • W H Yap
    • 1
    • 3
  • X Li
    • 1
  • T W Soong
    • 1
    • 3
  • J E Davies
    • 1
    • 2
  1. 1.West-East Centre for Microbial DiversityVancouverCanada
  2. 2.Department of MicrobiologyUniversity of British ColumbiaVancouverCanada
  3. 3.Institute of Molecular and Cell BiologyNational University of SingaporeSingaporeRepublic of Singapore

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