Soil salinity is a major constraint in the cultivation of crops across the globe. It is estimated that more than 800 million hectares of land is affected by salinity throughout the world (FAO, 2008). Several studies have shown that reactive oxygen species (ROS) and oxidative stress may be mediating toxic effects of NaCl on legumes (Hernández et al., 2000 and Jungklang et al., 2004) and other vascular plants (