Exposure of unwounded plants to chemical cues associated with herbivores leads to exposure-dependent changes in subsequent herbivore attack.
Exposure of unwounded plants to chemical cues associated with herbivores leads to exposure-dependent changes in subsequent herbivore attack.
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DOI：
10.1371/journal.pone.0079900
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发表时间：
2013
期刊：
影响因子：
3.7
通讯作者：
Orrock JL
中科院分区：
文献类型：
--
作者：
Orrock JL
虽然化学捕食线索往往会导致动物猎物的反捕食行为的变化，目前尚不清楚是否非挥发性的食草动物利它素（即偶然的化学线索产生的食草动物的运动或代谢，但不是由攻击）触发防御诱导植物攻击前。我发现，未受伤的植物（Brassica nigra）定期暴露于蜗牛的利它素（Haciaspersa运动过程中产生的粘液和粪便），随后经历了蜗牛攻击率的降低，不像未受伤的植物只接受了一次最初的早期暴露于蜗牛利它素。一项后续实验发现，粘液本身并不影响蜗牛对先前收获的B的摄食。羽衣甘蓝叶片的变化，表明食草动物对B.黑是由于植物质量的变化。与食草动物相关的化学物质导致未受伤植物的适口性变化的发现表明，植物窃听其蜗牛食草动物的非挥发性利它素成分。此外，这项工作表明，植物暴露的性质很重要，支持这样的结论，即没有受到攻击或伤害的植物仍然根据与食草动物相关的偶然化学信息和遇到潜在攻击线索的时间来调整其防御的使用。
Although chemical predator cues often lead to changes in the anti-predator behavior of animal prey, it is not clear whether non-volatile herbivore kairomones (i.e. incidental chemical cues produced by herbivore movement or metabolism but not produced by an attack) trigger the induction of defense in plants prior to attack. I found that unwounded plants (Brassica nigra) that were regularly exposed to kairomones from snails (mucus and feces produced during movement of Helix aspersa) subsequently experienced reduced rates of attack by snails, unlike unwounded plants that received only one initial early exposure to snail kairomones. A follow-up experiment found that mucus alone did not affect snail feeding on previously harvested B. oleracea leaves, suggesting that changes in herbivory on B. nigra were due to changes in plant quality. The finding that chemicals associated with herbivores leads to changes in palatability of unwounded plants suggests that plants eavesdrop on components of non-volatile kairomones of their snail herbivores. Moreover, this work shows that the nature of plant exposure matters, supporting the conclusion that plants that have not been attacked or wounded nonetheless tailor their use of defenses based on incidental chemical information associated with herbivores and the timing with which cues of potential attack are encountered.
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影响因子：
8.2
作者：
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通讯作者：
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影响因子：
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