Population structure of Heterobasidion annosum from North America and Europe

  • Authors: Otrosina, W.J.; Chase, T.E.; Cobb, F.W. Jr.; Korhonen, K.
  • Publication Year: 1993
  • Publication Series: Scientific Journal (JRNL)
  • Source: Can. J. Bot. 71:1064-1071.


Isolates of Heterobasidion annosum (Fr.) Bref. representing North American S and P and European S, P, and F intersterility groups were subjected to isozyme analysis.European S, P, and F groups had more variability than the North American S and P groups in expected heterozygosity, number of alleles per locus, and percent polymorphic loci.In contrast with the North American S and P groups, the European intersterility groups could not be distinguished from each other on the basis of individual isozyme loci, although significant differences in allele frequencies exist between European S and P groups.This suggests that evolution proceeded at different rates in the intersterility groups, or intersterility barriers appeared later in the European populations relative to the North American populations of H. annosum.Changes in climate and host species associations during the Tertiary may have been a major factor in evolution of H. annosum intersterility groups.

  • Citation: Otrosina, W.J.; Chase, T.E.; Cobb, F.W., Jr.; Korhonen, K. 1993. Population structure of Heterobasidion annosum from North America and Europe. Can. J. Bot. 71:1064-1071.
  • Posted Date: January 1, 2000
  • Modified Date: August 22, 2006
  • Print Publications Are No Longer Available

    In an ongoing effort to be fiscally responsible, the Southern Research Station (SRS) will no longer produce and distribute hard copies of our publications. Many SRS publications are available at cost via the Government Printing Office (GPO). Electronic versions of publications may be downloaded, printed, and distributed.

    Publication Notes

    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
    • Our online publications are scanned and captured using Adobe Acrobat. During the capture process some typographical errors may occur. Please contact the SRS webmaster if you notice any errors which make this publication unusable.
    • To view this article, download the latest version of Adobe Acrobat Reader.