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，由秘密疫霉（疫霉根腐病）引起的毁灭性疾病暴发表明，这种疾病严重影响了澳大利亚南部三叶草牧场的生产，特别是随着疫霉新品种的迅速出现，克服了所有商业品种的抗性。提出的研究旨在描述病原体的新小种，确定对疫霉根腐病的抗性表达的组织学和生化机制，并确定宿主抗性的新来源。这项拟议的研究将使育种者首次将多种类型的抗性和针对不同种族的抗性纳入新的寄主品种中。

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.