数字农科院2.0

Plant defense responses induced by Bemisia tabaci Middle EastAsia Minor 1 salivary components

文献类型： 外文期刊

作者： Yan, Ying;Zhang, HaiJing;Yang, YiTing;Zhang, Yan;Guo, JianYang;Liu, WanXue;Wan, FangHao;Wan, FangHao

作者机构：

关键词： whitefly saliva;salicylic acid pathway;jasmonic acid pathway;pathogenesis-related protein;protective enzyme;plant-insect interactions;tomato;Hemiptera;Aleyrodidae;Solanaceae;MEAM1

期刊名称： ENTOMOLOGIA EXPERIMENTALIS ET APPLICATA

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收录情况： SCI

摘要： The invivo effects of Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) Middle EastAsia Minor 1 (MEAM1) saliva on the induced defense of tomato plants were examined. After infiltration of MEAM1 saliva into tomato leaves, qPCR analysis indicated strong local induction of salicylic acid (SA)-responsive genes salicylic acid induction deficient 2 (SID2) and -1,3-glucanase (BGL2) whereas pathogenesis-related protein-1 (PR1) showed strong induction both locally and systemically. The jasmonic acid (JA)-responsive genes omega-3 fatty acid desaturase 3 (FAD3), lipoxygenase (LOX), and proteinase inhibitor II (PI-II) indicated moderate induction both locally and systemically. The activities of peroxidases and catalase were also induced both locally and systemically, whereas polyphenol oxidase and lipoxygenase were either transiently induced or unchanged. When either MEAM1 or AsiaII_3 whitefly adults were given access to leaves 2h after saliva infiltration, the number of F1 progeny on the leaves on which the infiltration took place was significantly reduced for both. In contrast, when either MEAM1 or AsiaII_3 adults were given access to leaves 1day after infiltration, the number of AsiaII_3 progeny was significantly reduced, whereas the number of MEAM1 progeny remained the same as the control. After 2days, there was no significant difference for theinfiltrated leaves for either species. In contrast, 2h, 1day, and 2days after saliva infiltration, the number of F1 MEAM1 progeny on leaves where infiltration did not take place was the same as the controls, whereas the number of AsiaII_3 progeny was significantly reduced. Furthermore, the percentage of MEAM1 adults on leaves with high PR1 and BGL2 RNAs was significantly higher than the percentage of AsiaII_3 adults. Altogether, infiltration of MEAM1 saliva caused intense local defense, as well as moderate, but more persistent systemic defense. Both the SA and JA signaling pathways were regulated by MEAM1 salivary components, and were associated with asymmetric plant defense that favored MEAM1 over AsiaII_3.

分类号： Q96

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