Please be advised that the site will be down for maintenance on Sunday, September 1, 2024, from 08:00 to 18:00, and again on Monday, September 2, 2024, from 08:00 to 09:00. We apologize for any inconvenience this may cause.
dc.contributor.author | Fru, Felix Fon![]() |
|
dc.contributor.author | Wingfield, Michael J.![]() |
|
dc.contributor.author | Roux, Jolanda![]() |
|
dc.contributor.author | Steenkamp, Emma Theodora![]() |
|
dc.date.accessioned | 2024-08-23T06:45:57Z | |
dc.date.available | 2024-08-23T06:45:57Z | |
dc.date.issued | 2023-01 | |
dc.description | DATA AVAILABILITY STATEMENT : The data supporting this study's findings are available from the corresponding author upon reasonable request. | en_US |
dc.description.abstract | Pitch canker on plantation-grown Pinus species, caused by the fungal pathogen Fusarium circinatum, first appeared in the western and southern Cape regions of South Africa. However, outbreaks have subsequently been reported from the major plantation growing regions of KwaZulu-Natal and Limpopo in the eastern, summer rainfall regions of the country. It is more than 10 years since the last detailed population genetics studies on F. circinatum in the region were conducted. To shed light on the population biology of F. circinatum in this region of South Africa, we used microsatellite markers and mating-type assays to study a collection of 296 isolates from different nurseries and plantation sites. Our results showed that populations in the region are highly diverse, but strongly interconnected, with various genotypes shared across nursery and plantation collection sites. In contrast to nursery populations, those associated with pitch canker outbreaks were characterized by the presence of relatively small numbers of dominant genotypes that were generally widespread across the region. Opposite mating-type individuals occurred in most of the isolate collections, but multilocus linkage disequilibrium analyses pointed towards clonality being the main reproductive mode of F. circinatum in the region. Most of the pathogen's genetic variation could probably have resulted from multiple different introductions into the country and more specifically, into the summer rainfall region. Because the spread and establishment of invasive pathogens are typically driven by aggressive clones, the results of this study provide important considerations for current and future Pinus disease management strategies. | 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.librarian | hj2024 | en_US |
dc.description.sdg | SDG-15:Life on land | en_US |
dc.description.sponsorship | University of Pretoria; South African National Research Foundation; South African Department of Science and Innovation; Tree Protection Cooperative Programme. | en_US |
dc.description.uri | http://www.wileyonlinelibrary.com/journal/ppa | en_US |
dc.identifier.citation | Fru, F.F., Wingfield, M.J., Roux, J. & Steenkamp, E.T. (2023) High diversity and clonality are hallmarks of Fusarium circinatum in South Africa. Plant Pathology, 72, 39–52. Available from: https://doi.org/10.1111/ppa.13644 | en_US |
dc.identifier.issn | 0032-0862 (print) | |
dc.identifier.issn | 1365-3059 (online) | |
dc.identifier.other | 10.1111/ppa.13644 | |
dc.identifier.uri | http://hdl.handle.net/2263/97832 | |
dc.language.iso | en | en_US |
dc.publisher | Wiley | en_US |
dc.rights | © 2022 British Society for Plant Pathology. This is the pre-peer reviewed version of the following article :High diversity and clonality are hallmarks of Fusarium circinatum in South Africa. Plant Pathology, 72, 39–52, 2023, doi : 10.1111/ppa.13644. The definite version is available at : http://www.wileyonlinelibrary.com/journal/ppa. | en_US |
dc.subject | Microsatellite markers | en_US |
dc.subject | Pine nurseries | en_US |
dc.subject | Pine plantations | en_US |
dc.subject | Population genetics | en_US |
dc.subject | SDG-15: Life on land | en_US |
dc.title | High diversity and clonality are hallmarks of Fusarium circinatum in South Africa | en_US |
dc.type | Postprint Article | en_US |