Figure 2.
Expression of the OS-ACS5 gene in transgenic rice seedlings upon submergence as assessed by a promoter-GUS fusion analysis. Histochemical assays were performed in 3- (A) and 9- (B) d-old T2 seedlings of line pRG11-2, carrying the full-length promoter fragment. Air-grown pRG11-2 seedlings are shown on the left, seedlings after 24 h of submergence are on the right. Quantification of GUS activities in immature stems of 9-d-old air-grown seedlings or after 24 h of submergence (C). Data represent the mean of four different, randomly chosen, transgenic lines (±sd).