Research Progress on Glandular Trichome Secretions of Plants

Plant glandular trichomes (GTs) are epidermal hairs on the surface of stems, leaves, floral organs, and fruits. Dubbed as the “biosynthesis factory,” they secret substances that can resist biotic and abiotic stresses to protect the plant. As secondary metabolites, they are potentially important in the development of and utilization for medicines, pesticides, and foods. This article reviewed the recent research progress on the types, extraction, isolation, and functionalities of various plant GTs and discusses the areas for future studies.