Fig. 7From: Regulation of polar auxin transport in grapevine fruitlets (Vitis vinifera L.) and the proposed role of auxin homeostasis during fruit abscissionEffect of IAA and GA on polar auxin transport and VvPINs expression. Percentage of polar auxin transport after a 6-h transport period (a) and relative transcript abundance of VvPIN1, VvPIN1a, VvPIN1b and VvPIN4 (b) in response to 1 μM IAA, 30 μM GA3, 1 μM IAA/30 μM GA3, 20 μM PAC and 1 μM IAA-Trp treatments at 10 DAF. Treatments were performed at 7 DAF and evaluation was done 3 DPT. Percentage of polar auxin transport after a 4-h transport period (c) in response to 20 μM PAC and 1 μM IAA/20 μM PAC treatments at 14 DAF. Treatments were performed at 12 DAF and evaluation was done 2 DPT. For (a) and (b), asterisk indicates that auxin transport or relative transcript abundance in treated fruitlets is significantly different from the corresponding value in control (Ctrl) berries (p < 0.05). For (c), asterisk indicates that polar auxin transport in IAA/PAC-treated berries is significantly different from the corresponding value in PAC-treated berries (p < 0.05). Error bars represent SE of three replicatesBack to article page