Race status, resistance mechanisms, and new sources of resistance to Phytophthora clandestina, a major threat to subterranean clover production.

自20世纪70年代末以来，由疫霉根腐病引起的毁灭性疾病的暴发表明，该病有能力严重影响澳大利亚南部的三叶草牧草生产，特别是随着新的疫霉小种迅速出现，以克服所有商业品种的抗性。这项拟议的研究旨在划分新的病原菌小种，鉴定表达对疫霉根腐病抗性的组织学和生化机制，并确定新的寄主抗性来源。这项拟议的研究将首次使育种者能够将多种类型的抗性和对不同小种的抗性纳入新的寄主品种。

Devastating outbreaks of disease caused by Phytophthora clandestina (Phytophthora root rot) since the late 1970s demonstrated the capacity of this disease to impact severely on clover pasture production across southern Australia, particularly as new races of Phytophthora have rapidly emerged to overcome the resistance of all commercial cultivars. The proposed research seeks to delineate new races of the pathogen, to identify the histological and biochemical mechanisms by which resistance to Phytophthora root rot is expressed, and to identify new sources of host resistance. This proposed research will enable breeders, for the first time, to incorporate multiple types of resistance and against different races into new host varieties.