Figure 6.

Day-Night Transitions Alter Rhythmic Growth and Movements.

Leaf elongation rate (A), leaf elevation angle (B), and leaf movements (C) (angular rate of change) of leaves 1 and 2 in continuous day (L/L; blue line; n_leaf = 43) and long-day conditions (L/D; 16/8; black line, n_leaf = 27). Col-0 plants were grown for 14 d in standard L/D conditions. Beginning from time 0 h, plants were imaged either in L/L or in L/D. Vertical gray bars represent subjective or true night periods. Leaf elongation rate was computed as mean moving average (3 h) of individual curves. Leaf elevation angle and movement rates are mean values. The opaque band around the mean lines is the 95% confidence interval of mean estimate. Arrows indicate acceleration of growth and n_leaf = number of measured leaves. l_tip and Φ_tip were used to compute the graphs.