Overexpression of Cu/Zn-SOD gene from Chaetomium thermophilum enhanced resistance of transgenic rice against three major diseases
The superoxide dismutases (SOD) play critical roles in the defense against oxidative stresses.Many studies have shown that improving SOD activity can increase the adaptation and tolerance to many environmental stresses for plants.Over-expression of SOD genes in plants can enhance their resistance to harmful environmental challenges.In this study,it was reported that transgenic rice constitutively expressing a Cu/Zn-SOD gene from Chaetomium thermophilum significantly improved their SOD activity and resistance to three major rice diseases,including bacterial blight,bacterial leaf streak and rice sheath blight.This single gene conferring resistance to various diseases could be important in the resistant breeding in plant.