Harnessing and Preserving the Genetic Diversity of Medicinal Plants: A Comprehensive Approach to Conservation, Climate Adaptation, and Drug Discovery.

Medicinal and aromatic plants (MAPs) are indispensable to global health and biodiversity, yet their genetic diversity faces escalating threats from habitat loss, overexploitation, climate change, and domestication. This study synthesizes a global perspective on the genetic and phytochemical diversity of medicinal plants, employing advanced molecular tools such as simple sequence repeat (SSR) markers, chloroplast DNA (cpDNA) sequencing, next-generation sequencing (NGS), and liquid chromatography-mass spectrometry (LC-MS) to assess diversity, identify threats, and explore conservation strategies. We investigate the determinants of diversity, including environmental, ecological, and anthropogenic factors, and evaluate the impacts of cultivation, domestication, and climate change on genetic and phytochemical profiles. Case studies across biodiversity hotspots (e.g., the Himalayas, Atlantic Forest, and the Lamiaceae family) reveal region-specific threats and conservation needs. Additionally, we explore the role of genetic diversity in climate adaptation, breeding, and transgenic development, highlighting its potential to enhance stress tolerance and phytochemical yield. By integrating omics technologies, geographic information system (GIS) mapping, and innovative conservation strategies (e.g., seed banking, cryopreservation, community engagement), this research provides a roadmap for preserving medicinal plant diversity. Expected outcomes include validated assessment tools, genetic–phytochemical correlations, and actionable conservation frameworks. This study underscores the critical importance of medicinal plant genetic diversity for drug discovery, ecological resilience, and sustainable health systems, offering solutions to ensure their survival and utility in a rapidly changing world.