Cytosolic APx knockdown indicates an ambiguous redox responses in rice

Ascorbate peroxidases convert H2O2 into H2O, using ascorbate as an electron donor. Rice transgenic plants silenced for cytosolic Apx1 and Apx2 genes were obtained. The double silencing of cytosolic OsApx genes induced compensatory antioxidant mechanisms while single knockdown of these genes resulted in the impairment of normal plant development.