Under salt stress, OsCYP2 is likely to up-regulate the activities of antioxidant enzymes (SOD, CAT and APX) at post-translation level to control H2O2 levels, resulting in the reduction of MDA levels, which may ultimately avoid oxidative damage of photosystems. The CYPs are ubiquitous chaperon proteins that have an intrinsic peptidyl prolyl cis / trans isomerase activity, participating in protein folding and are structurally conserved throughout evolution, found in bacteria to plants and animals (Galat, 1999). Rice OsCYP2 gene introduced into CYP2-yeast mutant revealed complementation and also contributed to the growth of wild type yeast under various stresses like salinity, high temperature and osmotic and oxidative stresses (Kumari et al ., 2009). Over expression of ThCYP gene in yeast and tobacco cells was found to confer increased tolerance against salt stress (Chen et al ., 2007). Similarly, the pigeon pea CYP (CcCYP) gene plays a crucial role in conferring tolerance to multiple abiotic stresses. It is also suggested that the OsCYP-25 gene transcript is highly up-regulated in response to major abiotic stresses such as salt, heat, cold and drought (Trivedi et