Forest Pathology (2013) 43, 124-131

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M. Vermeulen, M. Gryzenhout, M.J. Wingfield and J. Roux (2013)
Population structure of Chrysoporthe austroafricana in southern Africa determined using Vegetative Compatibility Groups (VCGs)
Forest Pathology 43 (2), 124-131
Abstract: Chrysoporthe austroafricana is one of the most damaging pathogens of Eucalyptus trees in southern Africa. It also occurs on non-native Tibouchina granulosa trees and native Syzygium species. Additional isolates of the pathogen from previously unstudied countries in the region have become available from survey studies. The aim of this study was to use VCGs to consider the diversity in populations of isolates collected in various countries in southern Africa (Malawi, Mozambique, Namibia, South Africa and Zambia) and from different hosts. We also wanted to determine whether there are shared VCGs among these countries and hosts in southern Africa and establish a VCG tester strain database. Results showed a high diversity amongst isolates from different countries and hosts, but suggested little movement of VCGs among countries or hosts based on the available isolates. A total of 108 VCG tester strains were identified for southern Africa.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Jolanda Roux, Michael J. Wingfield, Marieka Gryzenhout

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
surveys/sampling/distribution


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Chrysoporthe austroafricana Malawi
Chrysoporthe austroafricana Mozambique
Chrysoporthe austroafricana Namibia
Chrysoporthe austroafricana Zambia
Chrysoporthe austroafricana Eucalypt (Eucalyptus) South Africa