Recent advances in broad-spectrum resistance to the rice blast disease

Weitao Li, Mawsheng Chern, Junjie Yin, Jing Wang,  Xuewei Chen

Current Opinion in Plant Biology（IF=7.349，TOP），2019，50：114-120

https://www.sciencedirect.com/science/article/pii/S1369526618301808

Abstract

Blast is arguably the most devastating fungal disease of rice. Systematic studies of this disease have made significant progress and identified many genes. Broad-spectrum resistance is highly preferred in agricultural practice. Here, we focus our discussion on resistance (R) and defense-regulator (DR) genes that confer broad-spectrum resistance to Magnaporthe oryzae, in particular those potentially causing no significant yield penalties. Recent advances show that broad-spectrum resistance can be achieved without significant yield penalties, or even with yield benefits. Cross talks of defense signaling mediated by these genes are present that may allow the host to integrate different anti-fungal factors against M. oryzae infection. We also summarize possible mechanisms underlying broad-spectrum resistance to rice blast.