Figure 3.

Mature Root Hairs of Double Mutant Plants with Partly Suppressed Phenotypes.

Root hairs on tip1-1 rhd2-3 double mutant roots are frequently longer than those on rhd2-3 single mutant roots. This phenotype suggests that the wild-type function of TIP1 contributes to the short root hair phenotype of the rhd2-3 mutant. Results shown here demonstrate similar roles for RHD3 in the shv2-1 phenotype, and for SCN1 in the shv1-1 and shv2-1 phenotypes. The phenotypes of tip1-2 and shv2-1 tip1-2 are almost indistinguishable, suggesting that tip1-2 is almost completely epistatic to shv2-1. The shv1-1 and shv2-1 single mutant phenotypes are shown in Figure 2.