Osa-miR162a Enhances the Resistance to the Brown Planthopper via & alpha;-Linolenic Acid Metabolism in Rice (Oryza sativa)
文献类型： 外文期刊
作者： Chen, Jie 1 ; Liu, Qin 1 ; Yuan, Longyu 1 ; Shen, Wenzhong 2 ; Shi, Qingxing 1 ; Qi, Guojun 1 ; Chen, Ting 1 ; Zhang, Zhenfei 1 ;
作者机构： 1.Guangdong Acad Agr Sci, Inst Plant Protect, Guangdong Prov Key Lab High Technol Plant Protect, Guangzhou 510640, Guangdong, Peoples R China
2.Sun Yat Sen Univ, Sch Life Sci, State Key Lab Biocontrol, Guangzhou 510275, Guangdong, Peoples R China
3.Guangdong Acad Agr Sci, Guangdong Prov Key Lab Trop, Key Lab South Subtrop Fruit Biol & Genet Resource, Guangzhou 510640, Guangdong, Peoples R China
4.Guangdong Acad Agr Sci, Subtrop Fruit Tree Res Inst, Inst Fruit Tree Res, Guangzhou 510640, Guangdong, Peoples R China
关键词： rice; brown plant hopper; microRNA; miR162a; resistance
期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：6.1； 五年影响因子：6.3 ）
ISSN： 0021-8561
年卷期： 2023 年 71 卷 31 期
页码：
收录情况： SCI
摘要： The brown planthopper (BPH) is the most serious pestcausing yieldlosses in rice. MicroRNAs (miRNAs) are emerging as key modulatorsof plant-pest interactions. In the study, we found that osa-miR162ais induced in response to BPH attack in the seedling stage and tunesrice resistance to the BPH via the & alpha;-linolenic acid metabolismpathway as indicated by gas chromatography/liquid chromatography-massspectrometry analysis. Overexpression of osa-miR162a inhibited thedevelopment and growth of the BPH and simultaneously reduced the releaseof 3-hexenal and 3-hexen-1-ol to block host recognition in the BPH.Moreover, knockdown of OsDCL1, which is targetedby osa-miR162a, inhibited & alpha;-linolenic acid metabolism to enhancethe resistance to the BPH, which was similar to that in miR162a-overexpressingplants. Our study revealed a novel defense mechanism mediated by plantmiRNAs developed during the long-term evolution of plant-hostinteraction, provided new ideas for the identification of rice resistanceresources, and promoted a better understanding of pest control.
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