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首页> 外文期刊>American Zoologist >Interactions between chemical and mechanical defenses in the plant genus Bursera and their implications for herbivores
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Interactions between chemical and mechanical defenses in the plant genus Bursera and their implications for herbivores

机译：布尔氏菌属植物的化学和机械防御之间的相互作用及其对食草动物的影响

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摘要

Traditionally, plant defenses have been divided into two main categories: chemical and mechanical defenses. The first category includes a variety of substances that are toxic, repellent, or that render plant tissues indigestible to animals. In the second category are a series of physical barriers to avoid being eaten. These include structures such as spines, trichomes, and hard, very sticky, or smooth surfaces. Studies dealing with either one of these two kinds of defenses typically assume they are independent of each other and that their actions on herbivores are additive (Dussourd and Denno, 1991; Farrell et al., 1991; Becerra, 1994b). Yet, in some plants, structures such as glandular trichomes and secretory canals are combinations of mechanical and chemical deterrence that may interact to entrap insects in sticky and toxic secretions (Southwood, 1986; Howe and Westley, 1988; Becerra, 1994a). In this article we report an investigation of plant secretory canals and their relationship with plant chemistry in the genus Bursera. We present data suggesting an interaction between the mechanical and the chemical components of this defense. Also we present data which suggest that the interaction between these components has profound repercussions on how Bursera's herbivores defend themselves against their predators.
机译：传统上，植物防御被分为两大类：化学防御和机械防御。第一类包括各种有毒，排斥或使植物组织不能被动物消化的物质。第二类是避免被吃掉的一系列身体障碍。这些包括刺，三角毛和坚硬，非常粘或光滑的表面等结构。有关这两种防御方式之一的研究通常假设它们彼此独立，并且它们对草食动物的作用是累加的（Dussourd和Denno，1991; Farrell等，1991; Becerra，1994b）。然而，在某些植物中，诸如腺毛和分泌道的结构是机械和化学威慑作用的组合，它们可能相互作用，使昆虫陷入粘性和有毒的分泌物中（Southwood，1986; Howe and Westley，1988; Becerra，1994a）。在这篇文章中，我们报告了调查植物分泌渠道及其与Bursera属中的植物化学的关系。我们提出的数据表明这种防御的机械和化学成分之间存在相互作用。我们还提供了数据，表明这些成分之间的相互作用对Bursera的草食动物如何抵御捕食者起到了深远的影响。

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