Ascorbate Peroxidases/metabolism; Catalase/metabolism; Glutathione Peroxidase/metabolism; Oryza/enzymology; Ascorbate Peroxidases/genetics; Carbon Dioxide/metabolism; Catalase/genetics; Chlorophyll/metabolism; Chloroplasts/metabolism; Cytosol/enzymology; Cytosol/metabolism; Gene Expression Regulation, Plant; Glutathione/analysis; Glutathione Peroxidase/genetics; Homeostasis; Hydrogen Peroxide/analysis; Lipid Peroxidation; Oryza/genetics; Oryza/physiology; Oxidation-Reduction; Oxidative Stress; Phenotype; Photosynthesis; Plant Leaves/enzymology; Plant Leaves/genetics; Plant Leaves/metabolism; Plant Proteins/genetics; Plant Proteins/metabolism; Plants, Genetically Modified; Sequence Deletion; Signal Transduction; Stress, Physiological; Up-Regulation