Figure 4.

Complementation of the irx9 irx9L, irx14 irx14-L, and fra8 f8h double-mutant combinations demonstrates conservation of function between homologs. A, Complementation of irx9 mutant and irx9 irx9-L double mutant with 35S:IRX9 and 35S:IRX9-L. B, Complementation of irx14 mutant and irx14 irx14-L double mutant with 35S:IRX14 and 35S:IRX14-L. C, Complementation of fra8 mutant and fra8 f8h double mutant with 35S:FRA8 and 35S:F8H. D, Overexpression of IRX10, IRX14, or FRA8 does not rescue the irx9 irx9-L double mutant. For each plant the transgene is written above the horizontal line and the background genotype below the line. wt, Wild type. [See online article for color version of this figure.]