*2.1.2 Mechanism of salt tolerance in plants*

Tolerance to salt stress varies on species and variety and it also varies at growth stages of plants. A wide spectrum of responses against salt stress shown by plant gives warranty of a broad range of adaptations at the entire plant level [23]. Many crops tolerate negative effect of salinity and could survive with their routine function and metabolisms. Salt tolerance is associated with accumulation of compatible osmolytes and exclusion of Na+ while entering into the plant or tissue tolerance to high Na+ [24].
