Figure 4.

Trichome phenotypes of arp2-1, arp3-1, and arpc5-1 mutants. A, Phenotype analyses of arp2-1, arp3-1, and arpc5-1 mutant trichomes using light microscopy. a to d, Trichomes on a young leaf from WT and mutant plants. e to h, Single trichomes with branches from WT and mutant plants. Arrows point to the branches. i to l, Trichomes on stems from WT and mutant plants. a, e, and i are from WT plants. b, f, and j are from arp2-1 plants. c, g, and k are from arp3-1 plants. d, h, and l are from arpc5-1 plants. Arrows in e to h point to the branches. Bar in a (100 μm) is the same for b through d. Bar in e (50 μm) is the same for f through h. Bar in i (500 μm) is the same for j through l. B, Scanning electron microscopic analyses of arp2-1 trichomes. a and b show mature trichomes on a young leaf from WT and arp2-1 plants, respectively. c and d show single trichomes with the typical three branches from WT and arp2-1 plants, respectively. Bar in a and b = 500 μm. Bar in c = 100 μm. Bar in d = 20 μm.