摘要
Rice blast, which is caused by the fungus Magnaporthe oryzae, is a widespread and destructive plant disease that greatly reduces yield and grain quality worldwide. The use of host resistance is the most effective and economic way to control plant diseases. Many studies on blast resistance genes have focused on the nucleotide-binding site leucine-rich repeat （NB-LRR） resistance （called typical R） genes that mediate effector-triggered immunity. However, incorporating these R genes into rice varieties has not achieved durable blast resistance, because R-gene-mediated resistance is race-specific and often breaks down owing to the appearance of fungal variants that escape host recognition. Thus, the deployment of genes conferring non-race-specific du- rable resistance is highly desired by breeders. In plants, several genes conferring non-race-specific durable resistance genes have been isolated, but only a few of the molecular mechanisms responsible for resistance have been determined.
Rice blast, which is caused by the fungus Magnaporthe oryzae, is a widespread and destructive plant disease that greatly reduces yield and grain quality worldwide. The use of host resistance is the most effective and economic way to control plant diseases. Many studies on blast resistance genes have focused on the nucleotide-binding site leucine-rich repeat （NB-LRR） resistance （called typical R） genes that mediate effector-triggered immunity. However, incorporating these R genes into rice varieties has not achieved durable blast resistance, because R-gene-mediated resistance is race-specific and often breaks down owing to the appearance of fungal variants that escape host recognition. Thus, the deployment of genes conferring non-race-specific du- rable resistance is highly desired by breeders. In plants, several genes conferring non-race-specific durable resistance genes have been isolated, but only a few of the molecular mechanisms responsible for resistance have been determined.
