This book provides a comprehensive reference for various plant bioactive compounds for research and pharmacological significance across the entire spectrum of phytochemical genomics. The book opens with general information on diversity, analysis and genomic basis of phytochemicals, computational approaches, databases for responsible genes, and biosynthetic pathways, and it delves very much into the details behind phytochemical diversity and diverse roles of plant metabolites. The later parts of the book also explore the direct drug discovery and omics approaches including metabolomics, transcriptomics, as well as gene editing technology experiments to further inspire readers into its unlimited potentials. Each chapter includes detailed analysis and relevant experiments for better and deeper understanding of the concepts. The book will be an invaluable aid for medicinal plant researchers and a rich source of information and advice for advanced undergraduates and graduates in the fields of medicine, nutraceuticals, cosmetics, flavor, and fragrance studies.