Plants Under Attack Multiple Interactions with Insects and Microbes
Plants Under Attack Multiple Interactions with Insects and Microbes
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DOI：
10.4161/psb.2.6.4663
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发表时间：
2007-01-01
影响因子：
2.9
通讯作者：
Pieterse, Corne M. J.
中科院分区：
文献类型：
--
作者：
De Vos, Martin;Van Oosten, Vivian R.;Pieterse, Corne M. J.
为了保护自己，植物激活诱导防御机制，有效地对抗遇到的入侵者。食草昆虫和病原微生物诱导的防御信号通路存在部分重叠，可能导致交叉抗性。我们以前已经表明，由组织咀嚼菜粉蝶幼虫感染诱导拟南芥对随后的攻击的微生物病原体假单胞菌pv。番茄黄单胞菌（Xanthomonascampestris pv.）armoraciae（Xca）和芜菁皱缩病毒（TCV）。以韧皮部为食的蚜虫，如多面手桃蚜，有一种与鳞翅目幼虫咀嚼非常不同的隐形进食策略。然而，M。桃蚜取食导致大的转录组变化。在这里，我们报告的防御反应的有效性，是由M。桃蚜侵染的敏感性，以及M.桃对微生物诱导的抗性。M.桃蚜的繁殖不受先前同种取食的影响，蚜虫诱导的抗性对随后的Pst、Xca或TCV攻击也不有效。此外，由有益的荧光假单胞菌根际细菌引发的诱导系统抗性（ISR）对M.桃蚜。然而，系统获得性抗性（SAR）诱导的事先感染无毒Pst与减少蚜虫繁殖。这些数据提供了深入了解病原体和昆虫抗性的有效性，并突出了在多营养植物-攻击者相互作用期间触发的防御反应的复杂性。
To defend themselves, plants activate inducible defense mechanisms that are effective against the invader that is encountered. There is partial overlap in the defense signaling pathways that are induced by insect herbivores and microbial pathogens that may result in cross-resistance. We have previously shown that infestation by tissue-chewing Pieris rapae larvae induces resistance in Arabidopsis thaliana against subsequent attack by the microbial pathogens Pseudomonas syringae pv. tomato (Pst), Xanthomonas campestris pv. armoraciae (Xca) and turnip crinkle virus (TCV). Phloem-feeding aphids, such as the generalist Myzus persicae, have a stealthy feeding strategy that is very different from chewing by lepidopteran larvae. Yet, M. persicae feeding results in a large transcriptomic change. Here, we report on the effectiveness of the defense response that is triggered by M. persicae infestation, as well as the sensitivity of M. persicae to microbially-induced resistance. M. persicae reproduction was not affected by prior conspecific feeding, nor was aphid-induced resistance effective against subsequent attack by Pst, Xca or TCV. Moreover, induced systemic resistance (ISR) triggered by beneficial Pseudomonas fluorescens rhizobacteria was not effective against M. persicae. However, systemic acquired resistance (SAR) induced by prior infection with avirulent Pst was associated with reduced aphid reproduction. These data provide insight into the effectiveness of pathogen and insect resistance and highlight the complexity of the defense responses that are triggered during multitrophic plant-attacker interactions.