Magnaporthe oryzae systemic defense trigger 1 (MoSDT1)-mediated metabolites regulate defense response in Rice
文献类型： 外文期刊
作者： Duan, Guihua 1 ; Li, Chunqin 1 ; Liu, Yanfang 1 ; Ma, Xiaoqing 1 ; Luo, Qiong 1 ; Yang, Jing 1 ;
作者机构： 1.Yunnan Agr Univ, State Key Lab Conservat & Utilizat Bioresources Y, Kunming 650201, Yunnan, Peoples R China
2.Yunnan Agr Univ, Key Lab Agrobiodivers & Pest Management, Minist Educ, Kunming 650201, Yunnan, Peoples R China
3.Yunnan Acad Agr Sci, Qual Stand & Testing Technol Res Inst, Kunming 650205, Yunnan, Peoples R China
关键词： Rice; Magnaporthe oryzae; Metabolites; Effectors; Defense response
期刊名称：BMC PLANT BIOLOGY （ 影响因子：4.215； 五年影响因子：4.96 ）
ISSN： 1471-2229
年卷期： 2021 年 21 卷 1 期
页码：
收录情况： SCI
摘要： Background Some of the pathogenic effector proteins play an active role in stimulating the plant defense system to strengthen plant resistance. Results In this study, ultra-high performance liquid chromatography-quadrupole time-of-flight mass spectrometry (UHPLC/Q-TOF-MS) was implemented to identify altered metabolites in transgenic rice containing over-expressed M. oryzae Systemic Defense Trigger 1 (MoSDT1) that was infected at three-time points. The characterized dominating metabolites were organic acids and their derivatives, organic oxygen compounds, lipids, and lipid-like molecules. Among the identified metabolites, shikimate, galactinol, trehalose, D-mannose, linolenic acid, dopamine, tyramine, and L-glutamine are precursors for the synthesis of many secondary defense metabolites Carbohydrate, as well as amino acid metabolic, pathways were revealed to be involved in plant defense responses and resistance strengthening. Conclusion The increasing salicylic acid (SA) and jasmonic acid (JA) content enhanced interactions between JA synthesis/signaling gene, SA synthesis/receptor gene, raffinose/fructose/sucrose synthase gene, and cell wall-related genes all contribute to defense response in rice. The symptoms of rice after M. oryzae infection were significantly alleviated when treated with six identified metabolites, i.e., galactol, tyramine, L-glutamine, L-tryptophan, alpha-terpinene, and dopamine for 72 h exogenously. Therefore, these metabolites could be utilized as an optimal metabolic marker for M. oryzae defense.
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