Insects feeding on plants: Rapid signals and responses preceding the induction of phytochemical release

The ability of plants to withstand herbivores relies on direct and indirect chemical defense. By using toxic phytochemicals, plants can deter and/or poison herbivores, while by releasing volatile organic compounds (VOCs) into the atmosphere plants can attract predators of the attacking insects. In this review, we will focus on rapid early events following insect feeding on plants that eventually lead to the production and release of phytochemicals.