Spectrum of H2O2-derived hydroxyl radical adduct measured in thylakoids
isolated from barley leaves harvested 25 days after sowing (a). Thylakoids were
suspended to the concentration of 150 g/mL of chl and illuminated for 3 min with
500 mol quanta m−2 s−1 of white light. (b) and (c) represent the same sample
recorded in the dark (b) and in light without the FeEDTA (c).