Fig. 3

Changes of rapid light-response curves of rETR monitored in the Chlorella cultures treated with various Se concentrations (2.5, 8.5 and 25 mg Se per g of DW) at 250 μmol photon m⁻² s⁻¹ after 48 h (a) and 72 h (b) of experiments. The Chlorella cultures were also exposed to various light intensities of 250, 500 and 750 µmol photons m⁻² s⁻¹, respectively in the presence of 16 mg Se g⁻¹ DW for 48 h (c) and 72 h (d) (control—no Se addition)