**Abbreviations:**

ABA, abscisic acid; AO, ascorbate oxidase; APX, ascorbate peroxidase; Asc, ascorbate; CaMV, cauliflower mosaic virus; CAT, catalase; chl, chlorophyll; DHA, dehydroascorbate; DHAR, dehydroascorbate reductase; ETR, electron transport rate; Fd, ferredoxin; GalLDH, L-galactono-1,4-lactone dehydrogenase; GulLO, L-gulono-1,4-lactone oxidase; GalUR, D-galacturonic acid reductase; GR, glutathione reductase; GSH, glutathione; GST, glutathione-S-transferase; MDA, monodehydroascorbate reductase; MDAR, monodehydroascorbate reductase; NPQ, non-photochemical quenching; φPSII, quantum yield of PSII; qE, energy-dependent NPQ; qI, photoinhibition; RbcL, ribulose bisphosphate carboxylase/oxygenase large subunit; QC, quiescent center; PSI, photosystem I; PSII, photosystem II; ROS, reactive oxygen species; SOD, superoxide dismutase; TBARS, thiobarbituric acid reactive substance;

VDE, violaxanthin de-epoxidase
