Fig. 1.
PIN2 protein levels are distinct in neighbouring epidermal cell files. (A) PIN2-GFP-expressing trichoblast and atrichoblast cell files display different levels of PIN2. (B) Atrichoblast cell files have a 20% stronger fluorescence signal at the plasma membrane than trichoblast cell files. A profile of fluorescence intensity (grey value) through the atrichoblast and trichoblast cell files is shown underneath. (C) Immunolocalization studies with a PIN2 antibody confirmed a stronger signal in atrichoblast cell files. A profile of fluorescence intensity through the cell files is shown underneath. (D) Quantification of fluorescence intensity at the plasma membrane revealed a 30% stronger signal at atrichoblast cell files. The data were statistically evaluated using Student’s t test. ***P <0.001; n=25 cells in five individual roots. Scale bar: 10 μm.