FIGURE 5.

A further test for Pn of the GLO overexpression lines under high light and high temperature conditions. (A) The plants were first grown under light of 400 μmol m^-2 s^-1 and temperature of 30°C (day)/25°C (night) in a growth chamber to five-leaf stage, then treated with two conditions: (i) light of 900 μmol m^-2 s^-1 and temperature of 30°C (day)/25°C (night); (ii) 900 μmol m^-2 s^-1 and 40°C (day)/30°C (night). At 3 days after the treatment, Pn was determined. (B) The plants were first grown to five-leaf stage in a greenhouse during summer season. The temperature was artificially increased by attenuating the air circulation, where temperature and light can be quickly increased to high levels during the noon (see the inset). At 3 days after such condition, Pn was determined. “μE” represents “μmol m^-2 s^-1.” 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.