Figure 6.

Altered GA levels or signaling modulate ethylene growth response kinetics. Seedlings were then grown for 1 h in air, followed by the application of 10 µL L⁻¹ ethylene (downward arrow). Ethylene was removed 2 h later (upward arrow). A, Col seedlings were treated with 5 µM paclobutrazol or DMSO as a solvent control for 3 h prior to time-lapse imaging. B, ga3ox1-3 compared with Col controls. Data for Col were taken from Figure 2. C, gai-1 and della mutants were compared with Ler controls. Data represent the average ± sem of at least eight seedlings.