Plants in natural conditions are subjected to continuous exposure of various biotic and abiotic stresses.
Salinity is one the major Abiotic stress which affects the growth and survival of almost all the crop plants.
It is more common in arid and semi-arid regions. Legumes are very important crop specially for the arid
and semi-arid regions. Legumes belong to the family Leguminosae or Fabaceae, the 2nd most important
family after Poaceae in terms of providing food. Salinity is responsible for a large reduction in the yield of
various legumes. Salinity affects the plant at every stage of its life and the plant responses at molecular,
biochemical and physiological level to survive under salt stress. High content of reactive oxygen species
(ROS) in the plant indicates the plant is facing stress. Plants have a scavenging system to solve the problem
of ROS. The scavenging system involves various enzymes and some other antioxidants. According to
various studies by different scientists it has been found that during stress conditions the activity of these
enzymes increases in plants.