Figure 4.

Changes in g_s, A, and c_i in illuminated mature pea leaves throughout 14 h of no UV-B (○) or 0.63 W m⁻² of UV-B (□) irradiation treatments in a leaf chamber. Incident PPFD was 800 μmol m⁻² s⁻¹ and leaf temperature was maintained at 25°C ± 0.5°C, with a VPD of 1.5 kPa. Data are the means ± se of three replicates (se values are shown when larger than the symbols).