Research ArticleDifferential Expression of Cyclophilinl and Cyclophilin2 Genes under Salinity Stress in Some Native Rice Cultivars of North Kerala, India

摘要

Salinity is a major environmental constraint influencing growth and development of almost all the crop plants including rice leading to yield reduction throughout the world. Cyclophilins (CYP), members of immunophillin group of proteins, have been highly conserved throughout evolution and appear to be ubiquitous. They are involved in a variety of mechanisms including the regulation of salt stress in plants. As an initial step to investigate the regulation and function of two cyclophilins in rice, weisolated RNA that encodes two genes, designated OsCYPI and OsCYP2, two rice cyclophilin genes so as to study their differential expression under salinity stress. Differential expression of the two genes in which both of them were progressively up-regulated in response to salinity stress up to a certain level of NaCI concentration in the growth medium shows the importance of these genes as indicators and regulators of salt stress in rice.