Auxin-responsive reporter gene expression in eif3h-1 mutants. (A and B) DR5:GFP expression in wild type and eif3h root tips, respectively. (C and D) PIN1:PIN1-GFP expression in wild type and eif3h mutant root, respectively. Left panels show GFP fluorescence by confocal microscopy of a medial optical section and right panels show the corresponding brightfield image. Paired images were taken under the same magnification, exposure time, and processing conditions.