Northern analysis. Lane 1, Wild-type tobacco line;
lanes 2 to 4, transgenic p35S-SMT2 plant lines A, D, and
E, respectively. Ten micrograms of total leaf RNA from T3
plants was hybridized with a probe derived from the Arabidopsis
SMT2. The arrow denotes the SMT2 1.4-kb
transcript. The ethidium bromide-stained gel demonstrates equivalent
RNA quantities loaded in each lane.