Changed host plant volatile emissions induced by chemical interaction between unattacked plants reduce aphid plant acceptance with intermorph variation
Changed host plant volatile emissions induced by chemical interaction between unattacked plants reduce aphid plant acceptance with intermorph variation
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DOI：
10.1007/s10340-014-0625-z
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发表时间：
2015-06-01
影响因子：
4.8
通讯作者：
Ninkovic, Velemir
中科院分区：
文献类型：
--
作者：
Dahlin, Iris;Vucetic, Andja;Ninkovic, Velemir
蚜虫的嗅觉定向是由其宿主释放的特定挥发性混合物引导的。与其他植物共存的宿主植物对蚜虫的吸引力可能较小，因为邻近植物之间的挥发性相互作用可能导致其挥发物排放量的变化。这些未受损害的植物之间的相互作用引起的寄主植物挥发物谱的变化可用于管理作物中的蚜虫种群。当马铃薯植物暴露于洋葱植物的挥发物时，马铃薯的挥发性特征相对于未暴露的植物的挥发性特征发生变化，所述未暴露的植物具有持续更大量的两种萜类化合物释放。我们研究了蚜虫的寄主植物搜索行为，并表明植物挥发物排放的诱导变化影响蚜虫的行为。我们评估了有翅和无翅蚜虫，桃蚜（半翅目：蚜虫科）的嗅觉反应变化的挥发性排放。这两种变体显着减少吸引气味的马铃薯植物，已暴露于挥发性物质从洋葱比未暴露的马铃薯植物的气味。此外，这两种形态显着减少吸引到合成混合物模仿洋葱暴露的马铃薯植物比混合物模仿非暴露的控制，挥发物排放量更大的暴露的马铃薯和单一化合物。蚜虫形态的排斥不同的气味源的浓度，有翼的蚜虫响应更高的剂量比无翼的蚜虫。蚜虫对由邻近植物诱导的植物挥发物谱变化的反应可能有助于改进生境操纵策略（例如，间作）进行综合虫害管理，以减少作物中蚜虫的发生。
Olfactory orientation by aphids is guided by specific volatile blends released from their hosts. Host plants that co-exist with other plants may be less attractive for aphids due to volatile interactions between neighboring plants which can lead to changes in their volatile emissions. These changes in host plant volatile profiles induced by interactions between undamaged plants could be used to manage aphid populations in crops. When potato plants are exposed to volatiles from onion plants, the volatile profile of potato changes in relation to that of unexposed plants with consistently greater quantities of two terpenoids released. We examined the host plant searching behavior of aphids and showed that induced changes in plant volatile emissions affect aphid behavior. We assessed olfactory responses of winged and wingless aphids, Myzus persicae Sulzer (Hemiptera: Aphididae) to the changed volatile emissions. Both morphs were significantly less attracted to odors of potato plants that had been exposed to volatiles from onion than to odors of unexposed potato plants. Further, both morphs were significantly less attracted to synthetic blends mimicking volatiles emitted by onion-exposed potato plants than to blends mimicking non-exposed controls, and to single compounds emitted in greater quantities by exposed potato. Aphid morphs were repelled differently depending on the concentration of odor sources; winged aphids responded to higher doses than did wingless aphids. The aphid responses to changes in plant volatile profiles induced by neighboring plants may facilitate refinement of habitat manipulation strategies (e.g., intercropping) for integrated pest management to reduce aphid occurrence in crops.