Mutations of two FERONIA-like receptor genes enhance rice blast resistance without growth penalty
| Autor: | Yue Liu, Junjie Xing, Yang Tan, Zhuhong Yang, Long Wang, Xiqin Fu, Huafeng Deng, Jianing Qu, Qinlu Lin, Feng Yu |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine Pyricularia ROS) Physiology FLR Plant Science Plant disease resistance medicine.disease_cause 01 natural sciences stress responses 03 medical and health sciences Ascomycota Arabidopsis Gene expression medicine Gene family Gene Disease Resistance Plant Diseases Genetics Mutation biology AcademicSubjects/SCI01210 Cell growth rice food and beverages Oryza Magnaporthe oryzae FERONIA biology.organism_classification Research Papers Magnaporthe Plant Breeding 030104 developmental biology Plant—Environment Interactions 010606 plant biology & botany |
| Zdroj: | Journal of Experimental Botany |
| ISSN: | 1460-2431 0022-0957 |
| DOI: | 10.1093/jxb/erz541 |
| Popis: | 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. The FERONIA-like receptor (FLR) is essential for the response to Magnaporthe oryzae in rice, and mutations in FLR2 and FLR11 enhance resistance in the absence of significantly growth penalty. |
| Databáze: | OpenAIRE |
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