Fig. 5From: Regulation of polar auxin transport in grapevine fruitlets (Vitis vinifera L.) and the proposed role of auxin homeostasis during fruit abscissionImmunolocalization of putative VvPIN4 protein on longitudinal sections of 10 DAF grapevine fruitlets. a Detection of putative VvPIN4 protein in pericarp cells using anti-AtPIN4. b Control with anti-Actin showing diffuse not polarized fluorescence. Background fluorescence observed on sections treated with anti-AtPIN4 (c) and anti-Actin (d) preimmune serum instead of antiserum. Two independent immunolocalization assays with anti-AtPIN4 and anti-AtPIN4 preimmune serum are shown. Red fluorescence is emitted by FM 4-64 membrane stain. Green fluorescence is emitted by secondary antibody conjugated to fluorescent dye. Bars = 30 μmBack to article page