Rice sl-MH-1 mutant induces cell death and confers blast resistance via the synergistic roles of signaling systems
文献类型： 外文期刊
作者： Tian, Dagang 1 ; Lin, Yan 1 ; Li, Shengping 2 ; Cao, Yiyang 2 ; Li, Gang 1 ; Guo, Xinrui 1 ; Chen, Ziqiang 1 ; Chen, Zaijie 1 ; Wang, Feng 1 ; Wang, Zonghua 2 ;
作者机构： 1.Fujian Acad Agr Sci, Biotechnol Res Inst, Fujian Key Lab Genet Engn Agr, Fuzhou 350003, Fujian, Peoples R China
2.Fujian Agr & Forestry Univ, Plant Immun Ctr, State Key Lab Ecol Control Fujian Taiwan Crop Pest, Key Lab Minist Educ Genet Breeding & Multiple Util, Fuzhou 350003, Fujian, Peoples R China
关键词： Sekiguchi lesion; Cell death; Phytohormone; M; oryzae; Rice
期刊名称：CROP JOURNAL （ 影响因子：4.647； 五年影响因子：5.781 ）
ISSN： 2095-5421
年卷期： 2022 年 10 卷 6 期
页码：
收录情况： SCI
摘要： Serotonin is ubiquitous across all forms of life and functions in responses to biotic and abiotic stresses. In rice, the conversion of tryptamine to serotonin is catalyzed by Sekiguchi lesion (SL). Previous studies have identified an sl mutation (a null mutation of SL) in several rice varieties and confirmed its increase of resistance and cell death. However, a systematic understanding of the reprogrammed cellular processes causing cell death and resistance is lacking. We performed a multi-omics analysis to clarify the funda-mental mechanisms at the protein, gene transcript, and metabolite levels. We found that cell death and Magnaporthe oryzae (M. oryzae) infection of the sl-MH-1 mutant activated plant hormone signal transduction involving salicylic acid (SA), jasmonic acid (JA), and abscisic acid (ABA) in multiple regula-tory layers. We characterized the dynamic changes of several key hormone levels during disease progres-sion and under the cell death conditions and showed that SA and JA positively regulated rice cell death and disease resistance. SL-overexpressing lines confirmed that the sl-MH-1 mutant positively regulated rice resistance to M. oryzae. Our studies shed light on cell death and facilitate further mechanistic dissec-tion of programmed cell death in rice.(c) 2022 Crop Science Society of China and Institute of Crop Science, CAAS. Production and hosting by Elsevier B.V. on behalf of KeAi Communications Co., Ltd. This is an open access article under the CC BY-NC -ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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