ABSTRACT

Plants encounter several abiotic stresses which are the major constraints to plant growth and productivity, causing extensive crop losses linked to food security across the world. Soil salinity has been a hazard to agriculture in some parts of the world for over 3000 years; the threat has further pronounced to a larger area. Salt stress results in severe damage to plants when its inhibitory effects occur in the presence of high light intensity. High salt concentration lay down plant stressors such as ion toxicity, as a consequence of ion penetration in excess and disorder of nutrient balances, as usually seen in the displacement of monovalent ions. Transmembrane proteins like aquaporins have been found out to be an important group of proteins conferring drought tolerance in crop plants. Photosynthesis and respiration in plants are the vital processes which require sunlight either directly or indirectly, and under circumstances, plants being immobile, they inevitably come under the exposure of other types of radiation.