Smith Jordan L, De Moraes Consuelo M, Mescher Mark C
Department of Entomology, Center for Chemical Ecology, The Pennsylvania State University, University Park, PA 16802, USA.
Pest Manag Sci. 2009 May;65(5):497-503. doi: 10.1002/ps.1714.
While extensive research has examined plant defense responses to attack by herbivores and pathogens, plant responses to parasitism by other plants are not well characterized. The expression of induced plant defenses is mediated by complex signaling networks in which the plant hormones jasmonic acid (JA) and salicylic acid (SA) play key roles. In general, JA-mediated signaling pathways are implicated in the regulation of antiherbivore defenses, while the SA pathway is associated with defense responses against pathogens. However, there are many exceptions to this basic framework, and recent work suggests that interactions between the JA and SA pathways may play important roles in fine-tuning defense responses. The few studies that have addressed plant responses to parasitism by other plants suggest that both salicylates and jasmonates can mediate effective defenses. Here, a review is given of recent work on these defense signaling molecules with relevance for understanding their role in plant responses to parasitism.
尽管已有大量研究探讨了植物对食草动物和病原体攻击的防御反应，但植物对其他植物寄生的反应却没有得到很好的描述。诱导型植物防御的表达由复杂的信号网络介导，其中植物激素茉莉酸（JA）和水杨酸（SA）起着关键作用。一般来说，JA介导的信号通路参与调控抗食草动物防御，而SA通路与针对病原体的防御反应相关。然而，这一基本框架存在许多例外情况，最近的研究表明，JA和SA通路之间的相互作用可能在微调防御反应中发挥重要作用。少数关于植物对其他植物寄生反应的研究表明，水杨酸盐和茉莉酸盐都可以介导有效的防御。在此，对这些防御信号分子的最新研究进行综述，以了解它们在植物对寄生反应中的作用。
