Figure 9.

Effects of Altered miR396 Expression on Cell Expansion.

(A) Upper panel: epidermal cell size of the fifth leaf in the pGRF5:miR396 and wild-type plants (n = 50 to 100; average ± sd). Cell sizes were measured near the tip, middle, and base. Lower panel: ratios of cell sizes of pGRF5:miR396 to the wild type near the tip, middle, and base of the leaves (see Supplemental Figure 10C for statistical analysis).

(B) Promoter activity of CYCD3;2 in the fifth rosette leaf in wild-type and pGRF5:miR396 plants. Leaf lengths (in mm) are indicated.