Plants have always occupied a prominent position in the life of every living being. Plants are the primary source of food, shelter and medicines. The global inclination toward herbal medicine has advanced the expansion of plant-based pharmaceutical industries to a vast extent. The production of traditional medicine at global market has been estimated to touch US $5 trillion by 2050. Some of the useful plant-based drugs include vinblastine, vincristine, taxol, podophyllotoxin, camptothecin,...