Fig. 1

Trichome formation on stems of Col-0 wild type and the gis, tcl1 and gis tcl1 mutant plants. (a) Trichomes on the main stem internodes of the Col-0 wild type and the gis, tcl1 and gis tcl1 mutants. Photographs were taken from the first three internodes on the main inflorescence stems of 5-week-old soil-grown plants. Note that the trichome patterning on the main inflorescence stem of the gis tcl1 mutant was similar to that of the tcl1 mutant, but the morphology of the trichomes on the main inflorescence stem of the gis tcl1 mutant was similar to that of the gis mutant. (b) Trichome density on the first three internodes on the main inflorescence stems of the Col-0 wild type and the gis, tcl1 and gis tcl1 mutants. Number of trichomes on the each internode was count, the length of the internodes was measured, and the trichome density was calculated. Data represent the mean ± standard deviation (SD) of 10 plants. *Significantly different form that in the gis mutant plants (P < 0.0001)