Effects of high light stress (1000 μmol photons m-2 s-1 at 10°C for 2 d) on WT plants and on pdx1 , vte1 npq1 and vte1 npq1 pdx1 mutant plants. A) Plants after the high light treatment. B) Autoluminescence imaging of lipid peroxidation. C) HOTE level. a, significantly different with P < 0.03 (t test). D) Distribution of HOTE isomers in leaves of the vte1 npq1 pdx1 triple mutant exposed to the high light treatment. Data are mean values of 3 or 4 measurements + SD.