Significance of terpenoids in induced indirect plant defence against herbivorous arthropods
Significance of terpenoids in induced indirect plant defence against herbivorous arthropods
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DOI：
10.1111/j.1365-3040.2008.01783.x
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发表时间：
2008-04-01
影响因子：
7.3
通讯作者：
Dicke, Marcel
中科院分区：
文献类型：
--
作者：
Mumm, Roland;Posthumus, Maarten A.;Dicke, Marcel
许多植物对节肢动物的取食反应是诱导释放挥发物，如绿色叶挥发物和萜类化合物。这些由食草动物诱导的植物挥发物（HIPVs）可以吸引食肉动物，例如捕食者和寄生虫。我们研究了萜类化合物在两个三营养系统中吸引食草动物和食肉动物的意义，在两个三营养系统中，我们通过用磷霉素处理植物来操纵萜类化合物的排放，磷霉素抑制萜类化合物的生物合成途径之一，从而抑制萜类化合物的排放。被蜘蛛螨感染的磷霉素的挥发物，处理过的植物对捕食性螨Persimilis的吸引力比来自受侵染的对照植物的小。在“卷心菜”系统中，磷霉素处理并没有改变布鲁塞尔芽对两种粉蝶产卵的吸引力。的寄生性Cotesia glomerata没有区分的挥发性物质的磷霉素处理和水处理的毛虫感染的白菜。P.persimilis和C.化学分析表明，磷霉素处理后，受侵染的利马豆植株比布鲁塞尔芽苗菜植株更能抑制萜烯类化合物的释放，说明萜烯类化合物在利马豆的间接防御中起重要作用，并与其他HIPV的作用进行了讨论。
Many plants respond to herbivory by arthropods with an induced emission of volatiles such as green leaf volatiles and terpenoids. These herbivore-induced plant volatiles (HIPVs) can attract carnivores, for example, predators and parasitoids. We investigated the significance of terpenoids in attracting herbivores and carnivores in two tritrophic systems where we manipulated the terpenoid emission by treating the plants with fosmidomycin, which inhibits one of the terpenoid biosynthetic pathways and consequently terpenoid emission.In the 'lima bean' system, volatiles from spider-mite-infested fosmidomycin-treated plants were less attractive to the predatory mite Phytoseiulus persimilis than from infested control plants. In the 'cabbage' system, fosmidomycin treatment did not alter the attractiveness of Brussels sprouts to two Pieris butterflies for oviposition. The parasitoid Cotesia glomerata did not discriminate between the volatiles of fosmidomycin-treated and water-treated caterpillar-infested cabbage. Both P. persimilis and C. glomerata preferred volatiles from infested plants to uninfested ones when both were treated with fosmidomycin.Chemical analysis showed that terpenoid emission was inhibited more strongly in infested lima bean plants than in Brussels sprouts plants after fosmidomycin treatment.This study shows an important role of terpenoids in the indirect defence of lima bean, which is discussed relative to the role of other HIPVs.