Figure 2.

Ectopic expression of OsGA2ox1 in transgenic rice plants. A, Typical phenotype of transgenic rice plants carrying the Act::OsGA2ox1 gene approximately 120 d after germination. Left, wild-type (cv Nipponbare); center and right, Act::OsGA2ox1 transformants. In contrast to wild-type plants, flowering of transformants was impeded. Bar = 10 cm. B, Effect of exogenous GA treatment on elongation of the second leaf sheath of transgenic seedlings. Ten nanograms of GA₁ or GA₃ was dropped on the seedlings, which were then grown for 3 d. Each data point is the average for five plants.