Fig. 5.

The percentage transmission of Arabidopsis thaliana leaves (ecotype Wassilewskija). Each graph is a representative trace for the respective plant types. Plants were dark-adapted overnight. Mature leaves were then harvested and placed in a device measuring the light transmission of the leaves at increasingly high blue light intensities for a total of 19 h (1–4 h, dark; 4–7 h, 0.1 μmol photons m⁻² s⁻¹; 7–8 h, 0.2 μmol photons m⁻² s⁻¹; 8–9 h, 0.4 μmol photons m⁻² s⁻¹; 9–10 h, 0.8 μmol photons m⁻² s⁻¹; 10–11 h, 1.6 μmol photons m⁻² s⁻¹; 11–12 h, 5 μmol photons m⁻² s⁻¹; 12–13 h, 10 μmol photons m⁻² s⁻¹; 13–14 h, 30 μmol photons m⁻² s⁻¹; 14–15 h, 40 μmol photons m⁻² s⁻¹; 15–16 h, 50 μmol photons m⁻² s⁻¹; 16–17 h, 60 μmol photons m⁻² s⁻¹; 17–18 h, 90 μmol photons m⁻² s⁻¹; 18–19 h, 100 μmol photons m⁻² s⁻¹).