Northern analysis of AtGA3ox1 expression in young expanding leaf tissue of WT and 35S-AtGA3ox1 transgenic lines (4, 5, 12, 13, and 17). Twenty micrograms of total RNA was loaded per lane and hybridized under stringent conditions at 65°C to a full-length AtGA3ox1 probe. A ubiquitin-like EST, PttUBQ2, was used as loading control.