RPSR1,a major quantitative trait locus for Pythium stalk rot resistance in maize  

作　　者：Shengfeng He Junbin Chen Chuang Liu Dandan Liu Lei Wang Canxing Duan Wangsheng Zhu 

机构地区：[1]State Key Laboratory of Maize Bio-breeding/College of Plant Protection/Ministry of Agriculture and Rural Affairs Key Laboratory of Surveillance and Management for Plant Quarantine Pests,China Agricultural University,Beijing 100193,China [2]Institute of Plant Sciences,University of Bern,Altenbergrain 21,3013 Bern,Switzerland [3]Institute of Crop Sciences,Chinese Academy of Agricultural Sciences,Beijing 100081,China

出　　处：《The Crop Journal》2025年第1期51-61,共11页作物学报(英文版)

基　　金：supported by National Natural Science Foundation of China(32302371 to Junbin Chen);the National Key Research and Development Program,Ministry of Science and Technology of China(2022YFD1201802 to Wangsheng Zhu);Research Program from State Key Laboratory of Maize Biobreeding(SKLMB2424 to Wangsheng Zhu).

摘　　要：Pythium stalk rot(PSR)is a destructive disease of maize,severely affecting yield and grain quality.The identification of quantitative trait loci(QTL)or genes for resistance to PSR forms the basis of diseaseresistant hybrids breeding.In this study,a major QTL,Resistance to Pythium stalk rot 1(RPSR1),was identified from a set of recombinant inbred lines derived from MS71 and POP.Using a recombinant progeny testing strategy,RPSR1 was fine-mapped in a 472 kb interval.Through candidate gene expression,gene knock-down and knock-out studies,a leucine-rich repeat receptor-like kinase gene,PEP RECEPTOR 2(ZmPEPR2),was assigned as a PSR resistance gene.These results provide insights into the genetic architecture of resistance to PSR in maize,which should facilitate breeding maize for resistance to stalk rot.

关 键 词：MAIZE Pythium stalk rot Quantitative trait loci(QTL) LRR-RLK ZmPEPR2 

分 类 号：S435.131.4[农业科学—农业昆虫与害虫防治]