Review on Role of Absciscic Acid for Adaptation and Performance of Crop Under Drought Condition

There are many biological regulators that enhance crop adaptation and performance under water deficit condition to realize sustainable crop production for food security and ample in put supply for Agro-industry. Hence, the current review conducted with the objectives to understand the effect of ABA for adaptation and performance of crops under drought stress. Absciscic acid (ABA) is one of Plant hormones that principally participate in crop response to drought stress. Its synthesis and catabolism for different function pass through many step in plant cell. After synthesis and catabolism ABA transported to different plant parts for regulatory purpose. ABA plays great role in plant adaptation and performance under drought starting from seedling emergency up to grain yielding by regulating plant cell, organ and organ system reaction to drought; this could be achieved through enhancing seed dormancy (inhibit seed germination during adverse condition) and reduction of water transpiration by promotion of stomata pore closure. Also via facilitating modification in root hydraulic conductivity, photosynthesis, biomass allocation between roots and shoots, plant water relations, osmolyte production, and synthesis of stress-responsive proteins and genes to confer stress tolerance ABA enhance crops performance under severe water deficit. Keyword : Absciscic acid, Drought tolerance, Gene expression, Stomata closure, Root growth, Shoot growth and Yield performance DOI: 10.7176/JNSR/10-5-03 Publication date: March 31 st 2020