The book provides an overview of current trends in biotechnology and medicinal plant sciences. The work includes detailed chapters on various advance biotechnological tools involved in production of phytoactive compounds of medicinal significance. Some recent and novel research studies on therapeutic applications of different medicinal plants from various geographical regions of the world have also been included. These studies report the antimicrobial activity of various natural plant products against various pathogenic microbial strains. Informative chapters on recent emerging applications of plant products such as source for nutraceuticals and vaccines have been integrated to cover latest advances in the field. This book also explores the conservation aspect of medicinal plants. Thus, chapters having comprehensively complied in vitro conservation protocols for various commercially important rare, threatened and endangered medicinal plants were provided in the present book.