Development and Optimization of Rabbit Polyclonal Antibodies for Cu/ZnSOD detection in Rice (Oryza sativa L.)
Abstract Superoxide dismutase (SOD) activity is an important measure of plant stress tolerance used in cultivar improvement. At present, we are unaware of any widely available immunological reagents for the detection of SOD in Oryza sativa (common Asian rice) or other plants. In this study, we used insilico B-cell epitope prediction tools to generate peptides which were immunized into rabbits to yield polyclonal antibodies against Cu/Zn SODs. Immunoblotting demonstrated that the antibody specifically recognized both native and denatured Cu/Zn SODs in rice. In addition, this antibody can confirm the expression tendency of endogenous OsCu/Zn SODs under heat stress by immunoblotting, and has a positive reaction in tomato leaf extracts, as well as human Hela cells. Chloroplast content of Cu/Zn SODs in rice can be identified by ELISA indirect competition method using this antibody. These results suggest that this Cu/Zn SOD rabbit polyclonal antibody may be a useful tool for elucidating the biological functions of Cu/Zn SODs in plants.