Figure 1.

TCP17 positively regulates shade-induced hypocotyl elongation. A and B, Phenotypes and hypocotyl measurements of Col-0 and the triple mutant 3tcp seedlings grown under a Wc or a shade condition. Seedlings are grown under Wc for 3 d and then transferred to shade or stayed in Wc for an additional 5 d before the pictures were taken and the measurements were carried out. Scale bars = 1 cm. C, Hypocotyl elongation in response to the changes of R:FR ratio for Col-0 and 3tcp seedlings. Seedlings were grown under simulated Wc for 3 d before being transferred to simulated Wc or shade at the indicated R:FR for an additional 5 d. Data shown are the average of three independent biological replicates and SE (n ≥ 20 for each experiment). *P < 0.05 and **P < 0.01; based on Student’s t test.