Figure 1.

Diurnal dynamics of leaf starch contents in Arabidopsis. Wild-type Arabidopsis Columbia-0 plants were grown for 19 d in a 12-h photoperiod (160 μmol m⁻² s⁻¹) and then left in growth irradiance as a control or transferred to 60, 30, or 5 μmol m⁻² s⁻¹ at ambient CO₂ (approximately 400 µL L⁻¹) for 12 h as the reduced light treatment, placed in the dark for 12 h, and returned to 160 μmol m⁻² s⁻¹ for 12 h (recovery light period). In a separate experiment, plants were left in growth conditions as a control or transferred to 40 µL L⁻¹ CO₂ at 160 μmol m⁻² s⁻¹ for 12 h and then placed in the dark for 12 h. The changes in leaf starch contents during the treatments are shown. FW, Fresh weight. (Adapted from Moraes et al., 2019, Fig. 1.)