Fig. 7From: Evolution, expression and functional analysis of cultivated allotetraploid cotton DIR genesFunctional characterization of GbDIR78 in Arabidopsis. a Expression of GbDIR78 in the transgenic Arabidopsis, tested with qRT-PCR. b Western blot of GbDIR78 in the transgenic Arabidopsis. c-d Arabidopsis with overexpression of GbDIR78, compared with wild type, showed longer leaf trichomes. In the box plots, the median, upper and lower quartiles, and the range of normal values are denoted by the center line, box limits, and whiskers, respectively. n indicates the number of measured trichomes. The significance of difference was analyzed with two tailed t test. e-f Arabidopsis with overexpression of GbDIR78, compared with wild type, showed significantly longer dark-grown hypocotyls. g Microscopic inspection of hypocotyl epidermal cells. i-vi indicate the ends of epidermal cells. The original, unprocessed images were provided as Additional file 9Back to article page