Identification of the blast resistance gene Picl(t) from Chaling common wild rice (Oryza rufipogon Griff.)
文献类型： 外文期刊
作者： Zheng, Chuanqin 1 ; Jiang, Nan 1 ; Zhao, Xinhui 1 ; Yan, Tianze 1 ; Fu, Jun 1 ; Li, Yanfeng 1 ; Wu, Zhongxiu 1 ; Hu, Xiao 1 ;
作者机构： 1.Yuan Longping High Tech Agr Co Ltd, Hunan Engn Lab Dis & Pest Resistant Rice Breeding, Key Lab Southern Rice Innovat & Improvement, Minist Agr & Rural Affairs, Changsha 410128, Peoples R China
2.Hunan Normal Univ, Coll Life Sci, Dept Bot, Changsha 410081, Peoples R China
3.Hunan Agr Univ, Coll Agron, Changsha, Peoples R China
4.Hunan Hybrid Rice Res Ctr, State Key Lab Hybrid Rice, Changsha, Peoples R China
关键词： BSA-seq; Chaling common wild rice; RCA; resistance gene; rice blast
期刊名称：JOURNAL OF PHYTOPATHOLOGY （ 影响因子：1.789； 五年影响因子：1.574 ）
ISSN： 0931-1785
年卷期： 2020 年 168 卷 4 期
页码：
收录情况： SCI
摘要： Rice blast, caused by the fungal pathogen Magnaporthe oryzae (M. oryzae), is one of the most destructive and widespread plant diseases in the world. Utilization of resistance genes in rice breeding is considered to be an effective and economical method to control this disease. To identify new sources of blast resistance, a set of 1160 introgression lines (ILs) containing chromosome segments of Chaling common wild rice (Oryza rufipogon Griff.) in the genetic background of an elite indica rice variety 93-11 were developed and phenotyped in the blast nursery. Thirty-three ILs displaying stable blast resistance in three consecutive years were obtained. Among them, one line, IL1043, was subsequently found to be resistant to all of the 28 M. oryzae isolates from different regions through artificial inoculation in greenhouse. By combining bulk segregant analysis coupled with next-generation sequencing (BSA-seq) and recessive class analysis (RCA), a major blast resistance gene in IL1043, designated Picl(t), was mapped on rice chromosome 6 flanked by the markers RM527 and Indel6 with an interval of approximately 925 kb, which covers the Pi2/9 locus. These results will facilitate fine mapping and cloning of Picl(t), and the linked markers will further provide a useful tool for rice blast resistance breeding.
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