Race status, sources of resistance and mechanisms of resistance to Peronospora parasitica, a major threat to oilseed Brassica production in Australia.

通过对Peronospora parasitica小种抗性机制和分子特征的成功鉴定，以及对这些小种的宿主抗性来源的鉴定，育种者将第一次能够开发出具有抗性的栽培品种，以抵抗发生在澳大利亚南部的寄生小种的全谱抗性。其好处包括防止油菜籽因霜霉病而遭受严重损失，减少对杀菌剂的依赖，提高生产的可行性和可持续性。这项研究解决了国家研究重点“一个环境可持续发展的澳大利亚”和“改造现有产业”的优先目标，并将特别有利于澳大利亚南部的农村社区。

Through successful identification of mechanisms and molecular characterisation of resistance to Peronospora parasitica races and the identification of sources of host resistance against these races, breeders, for the first time, will be able to develop cultivars with resistance against the full spectrum of P. parasitica races occurring across southern Australia. Benefits include prevention of severe losses in canola from downy mildew, and more viable and sustainable production with less reliance upon fungicides. This research addresses the National Research Priority 'An Environmentally Sustainable Australia' and the Priority Goal of 'Transforming existing industries', and will particularly benefit southern Australian rural communities.