The fact that most of the suitable land has already been cultivated, meeting a projected target of a 50% increase in the global food production by 2050 to match the projected population growth becomes a challenging task. This book will provide a timely update on the recent progress in our knowledge on all aspects of plant's perception, signaling and adaptation to variety of environmental stresses such as drought, salinity, temperature and pH extremes, waterlogging, oxidative stress, and pathogens.