review · Biochemistry and Biophysics Reports
Endogenous plant signals, including phytohormones, secondary metabolites, and volatile organic compounds, play pivotal roles in plant growth, defense, and ecological interactions. Signals are crucial in plant responses to both biotic and abiotic stressors, as well as in the biosynthesis of therapeutic compounds. Jasmonic acid, salicylic acid, and ethylene are crucial signaling molecules that regulate internal and external communication, including herbivore defense and microbial interactions. Volatile organic compounds further enable plant–plant communication and ecological resilience. Increasing evidence links these signaling pathways to the production of compounds with antioxidant, anti-inflammatory, and anticancer properties in humans, bridging plant ecology with human health. This narrative review was conducted through integrative thematic synthesis of peer-reviewed literature published between 2015 and 2025, using databases such as PubMed, Scopus, and ScienceDirect. Articles were selected based on their relevance to the molecular mechanisms, ecological roles, and therapeutic implications of endogenous plant signals. Emphasis was placed on interdisciplinary studies spanning molecular biology, pharmacology, and systems ecology. This review explores recent advancements in plant signals' molecular and ecological roles, emphasizing their importance in sustainable agriculture, drug discovery, and functional foods. Signaling networks' complexity necessitates interdisciplinary strategies involving molecular biology, systems ecology, and pharmacology, which can be harnessed through biotechnology and systems-based research for therapeutic and ecological innovations. • This study explores endogenous plant signals and their roles in human health promotion. • It links plant defense signaling to bioactive compound biosynthesis. • Highlights volatile compounds in plant communication and therapy. • Reviews signal transduction pathways regulating phytochemical production. • Emphasizes interdisciplinary insights bridging ecology, medicine, and biotechnology.
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DOI: 10.1016/j.bbrep.2025.102114
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