Figure 3.

The arpc4-t1 mutant causes trichome actin cytoskeleton defects that are indistinguishable from other arp2/3 mutants. A, Maximum projection of confocal image stacks of fixed wild-type trichomes probed with phalloidin. Arrows show trichome branch 1 in two different stage 4 cells. B, Mid planes of wild-type trichome branch 1 from the cells in A. C, Maximum projection of confocal image stacks of arpc4-t1 trichomes, with arrows showing trichome branches 1 and 2. D, Mid planes of arpc4-t1 trichome branches 1 and 2. Stars in A and B indicate a subsection of a mature (stage 6) branch from an adjacent trichome. Bars = 10 μm.