Cytosolic ascorbate peroxidase 1 protects organelles against oxidative stress by wounding- and jasmonate-induced H2O2 in Arabidopsis plants

► Arabidopsis mutants lacking APX1 (KO-APX1) showed high sensitivity to wounding and treatment with methyl jasmonate (MeJA). ► After wounding and MeJA treatment, oxidative damage in the chloroplasts and nucleus was enhanced in the KO-APX1 plants. ► Our findings suggest that APX1 protects organelles against oxidative stress by wounding and MeJA treatment.