数字农科院2.0

Herbivore-Induced Rice Resistance Against Rice Blast Mediated By Salicylic Acid

文献类型： 外文期刊

作者： Kang, Hou-Xiang;Li, Yun-He;Chen, Xiu-Ping;Liu, Qing-Song;Peng, Yu-Fa;Liu, Xiao-Mei;Zhang, Kai-Li;Zhang, Kai-Li;Liu, Qing-Song

作者机构：

关键词： Induced Defense; Jasmonic Acid; Plant-Insect-Pathogen Interaction; Rice; Salicylic Acid

期刊名称： Insect Science

ISSN： 1672-9609

年卷期： 2020 年 27 卷 1 期

页码：

收录情况： JCR（2021版） ; CSCD（2020-2021年度） ; 农林核心（2020版） ; 科技核心（2020版）

摘要： In agro-ecosystems, plants are important mediators of interactions between their associated herbivorous insects and microbes, and any change in plants induced by one species may lead to cascading effects on interactions with other species. Often, such effects are regulated by phytohormones such as jasmonic acid (JA) and salicylic acid (SA). Here, we investigated the tripartite interactions among rice plants, three insect herbivores (Chilo suppressalis, Cnaphalocrocis medinalis or Nilaparvata lugens), and the causal agent of rice blast disease, the fungus Magnaporthe oryzae. We found that pre-infestation of rice by C. suppressalis or N. lugens but not by C. medinalis conferred resistance to M. oryzae. For C. suppressalis and N. lugens, insect infestation without fungal inoculation induced the accumulation of both JA and SA in rice leaves. In contrast, infestation by C. medinalis increased JA levels but reduced SA levels. The exogenous application of SA but not of JA conferred resistance against M. oryzae. These results suggest that pre-infestation by C. suppressalis or N. lugens conferred resistance against M. oryzae by increasing SA accumulation. These findings enhance our understanding of the interactions among rice plant, insects and pathogens, and provide valuable information for developing an ecologically sound strategy for controlling rice blast.

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