Fig. 1.

Relative abundance of ascorbate peroxidase 4 (APX4) in leaves of non-transformed (NT) and OsAPX4-RNAi rice plants (control) and plants treated with the catalase-inhibitor 3-AT (–CAT). The relative amount of APX4 was obtained by differential analysis of proteins using MS data, as described in the Methods. Data are means (±SD) of four replicates. Capital letters indicate significant differences between treatments (control and –CAT) within the same genotype and lower-case letters represent significant differences between genotypes (NT and OsAPX4-RNAi) within each treatment (P≤0.05).