Figure 1.

Gravitropic reorientation of hypocotyls of GA-deficient seedlings. Seedlings derived from Ler and Col accessions were grown for 3 d in darkness, and the plates were turned 90° at time 0. Reorientation of the hypocotyls was monitored in darkness as explained in “Materials and Methods.” When used, PAC concentration was 0.4 μm. Error bars represent sd (n > 16 individual seedlings). The effect of PAC and gai-1D with respect to the wild type was statistically significant (P < 0.05) as indicated by a two-way ANOVA test. [See online article for color version of this figure.]