Plant Responses to Herbivory, Wounding, and Infection

作者：Salma Mostafa, Yun Wang, Wen Zeng, Biao Jin · 发表于：International Journal of Molecular Sciences · 年份：2022 · DOI：10.3390/ijms23137031 · 被引用次数：153 · 研究领域：Insect-Plant Interactions and Control、Plant Parasitism and Resistance、Insect and Pesticide Research

Plants have various self-defense mechanisms against biotic attacks, involving both physical and chemical barriers. Physical barriers include spines, trichomes, and cuticle layers, whereas chemical barriers include secondary metabolites (SMs) and volatile organic compounds (VOCs). Complex interactions between plants and herbivores occur. Plant responses to insect herbivory begin with the perception of physical stimuli, chemical compounds (orally secreted by insects and herbivore-induced VOCs) during feeding. Plant cell membranes then generate ion fluxes that create differences in plasma membrane potential (Vm), which provokes the initiation of signal transduction, the activation of various hormones (e.g., jasmonic acid, salicylic acid, and ethylene), and the release of VOCs and SMs. This review of recent studies of plant–herbivore–infection interactions focuses on early and late plant responses, including physical barriers, signal transduction, SM production as well as epigenetic regulation, and phytohormone responses.