Chapter 1. An overview of medicinal plants: Drugs of tomorrow -- Chapter 2. Medicinal properties of plant under adverse environmental condition -- Chapter 3. Response of Secondary Metabolites of Ocimum gratissimum L. Under Copper Stress Condition -- Chapter 4. Resilience mechanism of medicinal plants under harsh environment -- Chapter 5. Nature Interpretation Sites (NIS) A New Hope of Ex-situ garden for Conservation and cultivation of Economically Important RET MAP's In Higher Himalayan Regions -- Chapter 6. Gene expression in medicinal plants in stress condition -- Chapter 7. Revealing the epigenetic mechanisms underlying the stress response in medicinal plants -- Chapter 8. Transcriptional Regulation in biosynthesis of phytochemicals in medicinal plants under stress conditions -- Chapter 9. Role of miRNA in medicinal plants under stress condition -- Chapter 10. Secondary metabolites biosynthesis and related gene expression under Ultraviolet-B radiation -- Chapter 11. Signaling molecules in medicinal plants response to cold stress -- Chapter 12. Aquaporins gene expression in plants under stress condition -- Chapter 13. Genomic instability in medicinal plants in response to heavy metal stress -- Chapter 14. Proteomics response of medicinal plants to salt stress -- Chapter 15. Regulation of PGPR-related genes in medicinal plants in adverse condition -- Chapter 16. Role of phytomelatonin in plant tolerance under environmental stress -- Chapter 17. Omics' approaches to analysis of stress responses genes in medicinal plants -- Chapter 18. Next generation sequencing (NGS) for metabolomics study in medicinal plants under stress condition -- Chapter 19. Targeted improvement of medicinal plants under stress condition through CRISPR/Cas mediated genome engineering -- Chapter 20. Molecular farming of medicinal plants in the face of environmental challenges.