dc.contributor.author |
Suzuki, Hiroyuki
|
|
dc.contributor.author |
Marincowitz, Seonju
|
|
dc.contributor.author |
Roux, Jolanda
|
|
dc.contributor.author |
Wingfield, Brenda D.
|
|
dc.contributor.author |
Wingfield, Michael J.
|
|
dc.date.accessioned |
2023-02-13T07:29:15Z |
|
dc.date.issued |
2023-10 |
|
dc.description.abstract |
Species of Corymbia are increasingly being tested for plantation establishment in South Africa. During disease surveys in KwaZulu-Natal plantations in 2020, a serious canker disease was found on Corymbia henryi. The cankers were seemingly caused by a fungus belonging to the family Cryphonectriaceae. The aims of the study were to identify the fungus causing the disease, to test its pathogenicity and to determine the genetic diversity of a population of isolates from infected trees. Phylogenetic analyses using sequence data for the internal transcribed spacer, β-tubulin 1 and β-tubulin 2 gene regions showed that the causal agent of the cankers was Chrysoporthe austroafricana. This is the first record of C. austroafricana causing cankers on a Corymbia species. A pathogenicity trial demonstrated that the fungus could infect C. henryi and cause cankers. Fifteen isolates of C. austroafricana were subjected to population genetic analyses using microsatellite markers. Eleven multilocus genotypes (MLGs) were detected. Mating-type distribution was approximately equal (MAT1-1:MAT1-2 = 8:7). The results indicate that a wide diversity of genotypes of C. austroafricana have undergone a host shift to infect C. henryi. This is a similar situation to that observed for Eucalyptus in South Africa and suggests that research efforts will be required to reduce the risk of Cryphonectria canker limiting afforestation using Corymbia species in the future. |
en_US |
dc.description.department |
Biochemistry |
en_US |
dc.description.department |
Forestry and Agricultural Biotechnology Institute (FABI) |
en_US |
dc.description.department |
Genetics |
en_US |
dc.description.department |
Microbiology and Plant Pathology |
en_US |
dc.description.embargo |
2024-01-31 |
|
dc.description.librarian |
hj2023 |
en_US |
dc.description.sponsorship |
Members of the Tree Protection Cooperative
Programme (TPCP) South Africa and a postdoctoral fellowship provided to the
first author by the University of Pretoria. |
en_US |
dc.description.uri |
https://academic.oup.com/forestry |
en_US |
dc.identifier.citation |
Suzuki, H., Marincowitz, S., Roux, J. et al. 2023, 'First report of canker caused by Chrysoporthe austroafricana on the plantation-grown eucalypt Corymbia henryi in South Africa', Forestry: An International Journal of Forest Research, vol. 96, no. 4, pp. 509–517, https://doi.org/10.1093/forestry/cpac054. |
en_US |
dc.identifier.issn |
0015-752X (print) |
|
dc.identifier.issn |
1464-3626 (online) |
|
dc.identifier.other |
10.1093/forestry/cpac054 |
|
dc.identifier.uri |
https://repository.up.ac.za/handle/2263/89428 |
|
dc.language.iso |
en |
en_US |
dc.publisher |
Oxford University Press |
en_US |
dc.rights |
© The Author(s) 2023. Published by Oxford University Press on behalf of Institute of Chartered Foresters. All rights reserved. This is a pre-copy-editing, author-produced PDF of an article accepted for publication in Forestry following peer review. The definitive publisher-authenticated version is : 'First report of canker caused by Chrysoporthe austroafricana on the plantation-grown eucalypt Corymbia henryi in South Africa', Forestry: An International Journal of Forest Research, vol. 96, no. 4, pp. 509–517, 2023, https://doi.org/10.1093/forestry/cpac054 is available online at :https://academic.oup.com/forestry. |
en_US |
dc.subject |
Cryphonectriaceae |
en_US |
dc.subject |
Genetic diversity |
en_US |
dc.subject |
Pathogenicity |
en_US |
dc.subject |
Pest and disease |
en_US |
dc.title |
First report of canker caused by Chrysoporthe austroafricana on the plantation-grown eucalypt Corymbia henryi in South Africa |
en_US |
dc.type |
Postprint Article |
en_US |