中文
New Publications
Cloning southern corn rust resistant gene RppK and its cognate gene AvrRppK from Puccinia polysora
2022-07-31

Gengshen Chen,Bao Zhang,Junqiang Ding,Hongze Wang,Ce Deng,Jiali Wang,Qianhui Yang,Qianyu Pi,Ruyang Zhang,Haoyu Zhai,Junfei Dong,Junshi Huang,Jiabao Hou,Junhua Wu,Jiamin Que,Fan Zhang,Wenqiang Li,Haoxuan Min,Girma Tabor,Bailin Li,Xiangguo Liu,Jiuran Zhao,Jianbing Yan &Zhibing Lai

Abstract

Broad-spectrum resistance has great values for crop breeding. However, its mechanisms are largely unknown. Here, we report the cloning of a maize NLR gene, RppK, for resistance against southern corn rust (SCR) and its cognate Avr gene, AvrRppK, from Puccinia polysora (the causal pathogen of SCR). The AvrRppK gene has no sequence variation in all examined isolates. It has high expression level during infection and can suppress pattern-triggered immunity (PTI). Further, the introgression of RppK into maize inbred lines and hybrids enhances resistance against multiple isolates of P. polysora, thereby increasing yield in the presence of SCR. Together, we show that RppK is involved in resistance against multiple P. polysora isolates and it can recognize AvrRppK, which is broadly distributed and conserved in P. polysora isolates.

全文链接:https://doi.org/10.1038/s41467-022-32026-4