Figure 6.

Diurnal changes in time constants for stomatal opening (k_open) or closure (k_close) calculated from the whole-plant stomatal conductance (g_s) in three C₃ and five C₄ species grown under HN or LN conditions. (A, B, C, and D) HN condition and (E, F, G, and H) LN condition. The results obtained in fluctuating light environments at 30-min intervals are shown. Data for A. sativa grown under HN and LN and Z. nicaraguensis grown under LN were not shown since we could not fit the temporal responses of g_s to the equations due to small differences in G_smax and G_smin (Supplemental Figures S3, C and S4I). Data are calculated from four pot plants on the balance.