Department of Biology, University of Texas Rio Grande Valley, Edinburg, TX 78539, USA.
School of Earth, Environmental and Marine Sciences, University of Texas Rio Grande Valley, Edinburg, TX 78539, USA.
Int J Mol Sci. 2021 Feb 1;22(3):1442. doi: 10.3390/ijms22031442.
There is no argument to the fact that insect herbivores cause significant losses to plant productivity in both natural and agricultural ecosystems. To counter this continuous onslaught, plants have evolved a suite of direct and indirect, constitutive and induced, chemical and physical defenses, and secondary metabolites are a key group that facilitates these defenses. Polyphenols-widely distributed in flowering plants-are the major group of such biologically active secondary metabolites. Recent advances in analytical chemistry and metabolomics have provided an opportunity to dig deep into extraction and quantification of plant-based natural products with insecticidal/insect deterrent activity, a potential sustainable pest management strategy. However, we currently lack an updated review of their multifunctional roles in insect-plant interactions, especially focusing on their insect deterrent or antifeedant properties. This review focuses on the role of polyphenols in plant-insect interactions and plant defenses including their structure, induction, regulation, and their anti-feeding and toxicity effects. Details on mechanisms underlying these interactions and localization of these compounds are discussed in the context of insect-plant interactions, current findings, and potential avenues for future research in this area.
昆虫食草动物对自然和农业生态系统中的植物生产力造成重大损失，这一事实毋庸置疑。为了抵御这种持续不断的侵袭，植物进化出了一系列直接和间接的、组成型和诱导型的化学和物理防御机制，而次生代谢物是促进这些防御机制的关键物质。广泛存在于开花植物中的多酚类物质是这类具有生物活性的次生代谢物的主要组成部分。分析化学和代谢组学的最新进展为深入研究具有杀虫/驱虫活性的植物源天然产物的提取和定量提供了机会，这是一种潜在的可持续害虫管理策略。然而，我们目前缺乏对其在昆虫-植物相互作用中多功能作用的最新综述，特别是缺乏对其驱虫或拒食特性的关注。本综述重点介绍了多酚类物质在植物-昆虫相互作用和植物防御中的作用，包括它们的结构、诱导、调控以及它们的拒食和毒性作用。讨论了这些相互作用的机制细节以及这些化合物的定位，这是在昆虫-植物相互作用的背景下进行的，涉及到当前的研究结果以及该领域未来研究的潜在途径。
