Journal article
Population genetic structure and cryptic species of Plasmopara viticola in Australia
Phytopathology, Vol.109(11), pp.1975-1983
2019
Abstract
Downy mildew of grape caused by Plasmopara viticola is a global pathogen of economic importance to commercial viticulture. In contrast to populations in the northern hemisphere, few studies have investigated the population biology, genetic diversity, and origin of the pathogen in Australian production systems. DNA was extracted from 381 P. viticola samples from Vitis vinifera and alternate hosts collected via fresh and herbarium leaves from populations within Australia and Whatman FTA cards from North America, Brazil, and Uruguay. A total of 32 DNA samples were provided from a French population. The populations were genotyped using 16 polymorphic microsatellite markers. Representative samples from within Australia, Brazil, and Uruguay were also genotyped to determine which of the cryptic species (clades) within the P. viticola species complex were present. Our findings suggest the Australian and South American populations of P. viticola are more closely related to the European population than the North American population, the reported source of origin of the pathogen. The Western Australian population had similarities to the South Australian population, and the tight clustering of samples suggests a single introduction into Western Australia. P. viticola clade aestivalis was the only clade detected in Australian and South American populations. Analysis of the Western Australian population suggests that it is reproducing clonally, but additional research is required to determine the mechanism as to how this is occurring.
Details
- Title
- Population genetic structure and cryptic species of Plasmopara viticola in Australia
- Authors/Creators
- A.S. Taylor (Author/Creator) - Murdoch UniversityB.J. Knaus (Author/Creator) - Horticultural Crops Research LaboratoryN.J. Grünwald (Author/Creator) - Horticultural Crops Research LaboratoryT. Burgess (Author/Creator) - Murdoch University
- Publication Details
- Phytopathology, Vol.109(11), pp.1975-1983
- Publisher
- The American Phytopathological Society
- Identifiers
- 991005541772007891
- Copyright
- © 2019 The American Phytopathological Society
- Murdoch Affiliation
- School of Veterinary and Life Sciences
- Language
- English
- Resource Type
- Journal article
UN Sustainable Development Goals (SDGs)
This output has contributed to the advancement of the following goals:
Source: InCites
Metrics
51 Record Views
InCites Highlights
These are selected metrics from InCites Benchmarking & Analytics tool, related to this output
- Collaboration types
- Domestic collaboration
- International collaboration
- Citation topics
- 3 Agriculture, Environment & Ecology
- 3.97 Plant Pathology
- 3.97.636 Fungal Plant Pathogens
- Web Of Science research areas
- Plant Sciences
- ESI research areas
- Plant & Animal Science