The volume deals with other aspect (s) of metabolic activities of plants under abiotic stress. This book discusses techniques for improving yield potential and adaptiveness to unfavorable environmental conditions. This book also addresses how knowledge of the changes in physiological mechanisms can contribute in understanding the yield structure under abiotic stress. • Abiotic Stress and Metabolic Responses in Plants • Abiotic Stress and Secondary Metabolites in Plants • Microbes: Support and Protect Plants against Abiotic Stresses • Abiotic Stress and Physiological Traits in Plants • Abiotic Stress and Heat Shock Proteins (HSPs) in Plants