FIGURE 3.

Photosynthetic parameters of the GLO overexpression lines under normal natural conditions or high light and high temperature conditions. The plants were grown under normal natural conditions as described in Figure 1. Until 5-leaf stage, net photosynthesis rates (A), internal CO₂ concentration (B), transpiration rates (C), and stomatal conductance (D) were measured using the youngest fully expanded leaves at between 10:00 and 12:00 of the day. The plants were transferred to a growth chamber with temperature of 40°C (day)/30°C (night) and light of 900 μmol m^-2 s^-1 and 65% humidity. At 3 days after the treatment, the photosynthetic parameters were determined in (E–H). The data are means ± SD of four measurements on different plants and representative of three independent experiments. The other legends are the same as those in Figure 1.