FIGURE 3.
Tissue specificity expression and subcellular localization assay. (A,B) Histochemical assay of CAL2 promoter GUS activity in 14-day-old rice seedlings. (C,D) Subcellular localization of CAL2 in Arabidopsis (C) and rice (D) plants harboring the construct 35S:CAL2-mRFP. 7-day-old seedling root epidermal cells were incubated in 40% sucrose to induce plasmolysis and then imaged by confocal microscopy. The arrows indicate the plasmolyzed cells. Scale bars = 2 mm in (A), 1 cm in (B), and 20 μm in (C,D). Two independent transgenic lines were used in (A–D) and showed similar results.