(A) Culture morphology (upper, 20 °C, 9 days) and pathogenicity assay (lower, 20 °C, 3 days) of Botrytis cinerea strains Ecan17-2 and B05.10 on potato dextrose agar (PDA) and detached N. benthamiana leaves, respectively. (B) Radial mycelial growth rate (20 °C, upper) on PDA and lesion diameter (20 °C, 72 h, lower) on detached N. benthamiana leaves of strains Ecan17-2 and B05.10. “**” indicates a significant difference (p < 0.01) between strains Ecan17-2 and B05.10 in both pathogenicity and radial mycelial growth rate. (C) Agarose gel electrophoresis of dsRNAs extracted from the mycelia of B. cinerea strains Ecan17-2 and HBtom-372.