Figure 2.

Quantification of the Gaussian signal of g_s during diurnal measurements. Diurnal g_s measured under square wave light (A); the relative percentage of Gaussian driven g_s (R_sin, B); the time at which peak g_s occurs (Tm_sin, C); the width of the peak (Ts_sin, D); and the magnitude of the Gaussian g_s response (G_sin, E). FLH (red), SNH (green), and SQH (blue) high-light treatments (full lines) were measured under SQ_High. FLL (red), SNL (green), and SQL (blue) low-light treatments (dashed lines) were measured under SQ_Low. Bars are combined data from high and low-light treatments. Error bars represent mean ± se, n = 5–7. Colored letters represent the results of Tukey’s posthoc comparisons of group means from the individual light treatments, and black letters are the result from combined high- and low-light treatments.