Journal article
Ubiquity of ToxA and absence of ToxB in Australian populations of Pyrenophora tritici-repentis
Australasian Plant Pathology, Vol.39(1), pp.63-68
2010
Abstract
Pyrenophora tritici-repentis, the causal organism of the necrotrophic foliar wheat disease tan spot [also known as yellow (leaf) spot in Australia] is an important disease in Australia and in many parts of the world. North American isolates of the pathogen have been shown to produce combinations of three host-specific toxins, ToxA, ToxB and ToxC. Each toxin interacts with a host sensitivity locus, respectively Tsn1, Tsc2 and Tsc1. The virulence of an isolate is partially correlated with the presence of these toxins and resistance in the host is associated with absence of the sensitivity loci. Breeding for resistance to tan spot can, therefore, be aided by knowledge of the prevalence of the toxin-encoding genes in local pathogen populations. Two of the toxins, A and B, are encoded by known genes and molecular tests for the genes have been developed. We screened a diverse collection of 119 tan spot isolates collected between 1984 and 2008 and from all affected regions of Australia (Queensland, New South Wales, Victoria and Western Australia). In all cases, the gene for ToxA was present and the gene for ToxB was absent. The implications for resistance breeding and epidemiology of the disease are discussed. We also define a diagnostic molecular marker for P. tritici-repentis.
Details
- Title
- Ubiquity of ToxA and absence of ToxB in Australian populations of Pyrenophora tritici-repentis
- Authors/Creators
- E.A. Antoni (Author/Creator) - Murdoch UniversityK. Rybak (Author/Creator) - Murdoch UniversityM.A. Tucker (Author/Creator) - Murdoch UniversityJ.K. Hane (Author/Creator) - Murdoch UniversityP.S. Solomon (Author/Creator) - Australian National UniversityA. Drenth (Author/Creator) - The University of QueenslandM. Shankar (Author/Creator) - Agriculture and FoodR.P. Oliver (Author/Creator) - Murdoch University
- Publication Details
- Australasian Plant Pathology, Vol.39(1), pp.63-68
- Publisher
- CSIRO Publishing
- Identifiers
- 991005542209407891
- Copyright
- © Australasian Plant Pathology Society 2010
- Murdoch Affiliation
- School of Veterinary and Biomedical 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
46 Record Views
InCites Highlights
These are selected metrics from InCites Benchmarking & Analytics tool, related to this output
- Collaboration types
- Domestic 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