Figure 5. Effect of amiR1918 overexpression on the resistance of transgenic tomato to Phytophthora infestans.

(a–d) Parameters showing the extent of the disease seven days after infection with P. infestans. (a) Disease symptoms; (b) number of necrotic cells (Scale bars:100 μm); (c) lesion size; (d) sporangia per leaf. (e) Expression patterns of miR1918 and its target genes in tomato leaves from WT and transgenic lines at 7 days after inoculation with P. infestans. Data are the means ±SEs of three independent experiments. Samples marked with various letters are significantly different at the p < 0.05 level according to Duncan’s Multiple Range Test.