Widespread genetic heterogeneity and genotypic grouping associated with fungicide resistance among barley spot form net blotch isolates in Australia
Article
Hassett, Kealan, Muria-Gonzalez, Mariano Jordi, Turner, Aleesha, McLean, Mark S., Wallwork, Hugh, Martin, Anke and Ellwood, Simon R.. 2023. "Widespread genetic heterogeneity and genotypic grouping associated with fungicide resistance among barley spot form net blotch isolates in Australia." G3: Genes, Genomes, Genetics. 13 (5).
Article Title | Widespread genetic heterogeneity and genotypic grouping associated with fungicide resistance among barley spot form net blotch isolates in Australia |
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ERA Journal ID | 200540 |
Article Category | Article |
Authors | Hassett, Kealan, Muria-Gonzalez, Mariano Jordi, Turner, Aleesha, McLean, Mark S., Wallwork, Hugh, Martin, Anke and Ellwood, Simon R. |
Journal Title | G3: Genes, Genomes, Genetics |
Journal Citation | 13 (5) |
Article Number | jkad076 |
Number of Pages | 11 |
Year | 2023 |
Publisher | Oxford University Press |
Place of Publication | United States |
ISSN | 2160-1836 |
Web Address (URL) | https://academic.oup.com/g3journal/article/13/5/jkad076/7099441 |
Abstract | Spot form net blotch, caused by Pyrenophora teres f. maculata, is a major foliar disease of barley worldwide. Knowledge of the pathogen's genetic diversity and population structure is critical for a better understanding of inherent evolutionary capacity and for the development of sustainable disease management strategies. Genome-wide, single nucleotide polymorphism data of 254 Australian isolates revealed genotypic diversity and an absence of population structure, either between states, or between fields and cultivars in different agro-ecological zones. This indicates there is little geographical isolation or cultivar directional selection and that the pathogen is highly mobile across the continent. However, two cryptic genotypic groups were found only in Western Australia, predominantly associated with genes involved in fungicide resistance. The findings in this study are discussed in the context of current cultivar resistance and the pathogen's adaptive potential. |
Keywords | diversity arrays technology; necrotroph; Hordeum vulgare; fungal plant pathogen |
Contains Sensitive Content | Does not contain sensitive content |
ANZSRC Field of Research 2020 | 300409. Crop and pasture protection (incl. pests, diseases and weeds) |
Byline Affiliations | Curtin University |
Agriculture Victoria | |
South Australian Research and Development Institute, Australia | |
Centre for Crop Health |
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