Mutations of two FERONIA-like receptor genes enhance rice blast resistance without growth penalty
文献类型： 外文期刊
作者： Yang, Zhuhong 1 ; Xing, Junjie 3 ; Wang, Long 1 ; Liu, Yue 1 ; Qu, Jianing 4 ; Tan, Yang 3 ; Fu, Xiqin 3 ; Lin, Qinlu 4 ; De 1 ;
作者机构： 1.Hunan Univ, Coll Biol, Changsha 410082, Hunan, Peoples R China
2.Hunan Univ, Hunan Key Lab Plant Funct Genom & Dev Regulat, Changsha 410082, Hunan, Peoples R China
3.Hunan Acad Agr Sci, Hunan Hybrid Rice Res Ctr, State Key Lab Hybrid Rice, Changsha 410125, Peoples R China
4.Cent South Univ Forestry & Technol, Natl Engn Lab Rice & By Prod Deep Proc, Changsha 410004, Peoples R China
关键词： FERONIA; FLR; Magnaporthe oryzae; rice; reactive oxygen species (ROS); stress responses
期刊名称：JOURNAL OF EXPERIMENTAL BOTANY （ 影响因子：6.992； 五年影响因子：7.86 ）
ISSN： 0022-0957
年卷期： 2020 年 71 卷 6 期
页码：
收录情况： SCI
摘要： Genes that provide resistance to fungi and/or bacteria usually reduce plant growth and ultimately affect grain yield. Thus, crop breeding programs need to find genetic resources that balance disease resistance with growth. The receptor kinase FERONIA regulates cell growth and survival in Arabidopsis. Here, we investigate, in rice, the role of members of the FERONIA-like receptor (FLR) gene family in the balance between growth and the response to the fungal pathogen Magnaporthe oryzae (Pyricularia oryzae), which causes the most devastating disease in rice. We carried out genome-wide gene expression and functional screenings in rice via a gene knockout strategy, and we successfully knocked out 14 FLR genes in rice. Using these genetic resources, we found that mutations in the FLR2 and FLR11 genes provide resistance to rice blast without a profound growth penalty. Detailed analyses revealed that FLR2 mutation increased both defense-related gene expression and M. oryzae-triggered production of reactive oxygen species. Thus, our results highlight novel genetic tools for studying the underlying molecular mechanisms of enhancing disease resistance without growth penalty.
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