Supplementary Table S1

Description / UV-B irradiance
[µW cm-2] / UV-B duration
[hours] / [days] / UV-B dose
[kJ m-2] / Figures

Experiment 1 / UV-B induced kinetics, every day measurements
Control I
UV-B free growth chamber / 0 / 0 / 0 / 0 / 2
Control II
UV-B free in
UV-B growth chamber / 0 / 0 / 0 / 0 / 2
Single UV-B dose / 100 / 6 / 1 / 2.16 / 2, 6
Experiment 2 / UV-B triggering experiment in growth chamber, measurements after 7 days
50 / 12 / 1 / 2.16 / 7, 8, 13
50 / 12 / 2 / 4.32 / 7, 8, 13
50 / 12 / 3 / 6.48 / 7, 8, 13
50 / 12 / 4 / 8.64 / 7, 8, 13
100 / 6 / 1 / 2.16 / 7, 8, 13
100 / 6 / 2 / 4.32 / 7, 8, 13
100 / 6 / 3 / 6.48 / 7, 8, 13
100 / 6 / 4 / 8.64 / 7, 8, 13
150 / 4 / 1 / 2.16 / 7, 8, 13
150 / 4 / 2 / 4.32 / 7, 8, 13
150 / 4 / 3 / 6.48 / 7, 8, 13
150 / 4 / 4 / 8.64 / 7, 8, 13
Experiment 3 / 21 days acclimation + 21 days re-acclimation under a second irradiance level
Initially grown in growth chamber / 100 + 100 / 6 / 21 + 21 / 10
100 + 80 / 6 / 21 + 21 / 10
100 + 120 / 6 / 21 + 21 / 10
Initially grown outdoors in shade / variable / variable / 15 / 11
100 / 6 / 15 / 11
150 / 4 / 15 / 11
Full sunlight induction of shaded leaves
for outdoors grown plants / Variable
210 max / variable / 1 / 15.3 / 3, 13