Abstract:

Plants recognize the condition of water stress through their roots and they are sending a signal to their leaf to synthesize ABA. The ABA is a major key regulating phyto hormone for drought stress-responsive factors such as gene expression for stress proteins, stomatal closure, osmoprotectants accumulation, and stomatal closure for preventing water loss. The protein kinases SNRK2s and MAPK are detecting the ABA influx in guard cells that regulate the stomatal closure. The transcription factor ABREs and DREBs are regulating wide ranges of gene expression machinery under ABA mediation to drought stress, focusing on intracellular and cellular gene networks that are responsible for drought stress. The wax synthesis gene GLY shows high cuticular wax storage in leaf surface under drought conditions in rice it may play an important role in drought tolerance in rice.