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Feeding by Whiteflies Suppresses Downstream Jasmonic Acid Signaling by Eliciting Salicylic Acid Signaling

文献类型： 外文期刊

作者： Zhang, Peng-Jun 1 ; Li, Wei-Di 1 ; Huang, Fang 1 ; Zhang, Jin-Ming 1 ; Xu, Fang-Cheng 2 ; Lu, Yao-Bin 1 ;

作者机构： 1.Zhejiang Acad Agr Sci, Inst Plant Protect & Microbiol, State Key Lab Breeding Base Zhejiang Sustainable, Hangzhou 310021, Zhejiang, Peoples R China

2.Wenzhou Vocat Coll, Inst Ecol & Environm, Wenzhou, Peoples R China

3.Wenzhou Tech Coll, Inst Ecol & Environm, Wenzhou, Peoples R China

关键词： Bemisia tabaci;Jasmonic acid;Salicylic acid;Cross-talk;Vegetative storage protein1 (VSP1)

期刊名称：JOURNAL OF CHEMICAL ECOLOGY （ 影响因子：2.626； 五年影响因子：2.984 ）

ISSN：

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收录情况： SCI

摘要： Phloem-feeding whiteflies in the species complex Bemisia tabaci cause extensive crop damage worldwide. One of the reasons for their "success" is their ability to suppress the effectual jasmonic acid (JA) defenses of the host plant. However, little is understood about the mechanisms underlying whitefly suppression of JA-regulated defenses. Here, we showed that the expression of salicylic acid (SA)-responsive genes (EDS1 and PR1) in Arabidopsis thaliana was significantly enhanced during feeding by whitefly nymphs. Whereas upstream JA-responsive genes (LOX2 and OPR3) also were induced, the downstream JA-responsive gene (VSP1) was repressed, i.e., whiteflies only suppressed downstream JA signaling. Gene-expression analyses with various Arabidopsis mutants, including NahG, npr-1, ein2-1, and dde2-2, revealed that SA signaling plays a key role in the suppression of downstream JA defenses by whitefly feeding. Assays confirmed that SA activation enhanced whitefly performance by suppressing downstream JA defenses.

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[1]Phloem-feeding whiteflies can fool their host plants, but not their parasitoids. Zhang, Peng-Jun,Zhang, Jin-Ming,Lu, Yao-Bin,Xu, Cai-Xia,Wei, Jia-Ning,Liu, Yin-Quan,David, Anja,Boland, Wilhelm,Turlings, Ted C. J.. 2013

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[3]Role of salicylic acid in alleviating oxidative damage in rice roots (Oryza sativa) subjected to cadmium stress. Guo, B.,Liang, Y. C.,Zhu, Y. G.,Zhao, F. J..

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