Figure 7.

Transgenic potato plants harboring PVS3::StMEK1^DD show resistance to P. infestans and A. solani. A, The transgenic plants developed normally. B, The transgenic tubers developed normally. C, Eleven days after inoculation of wild-type and transgenic leaves with virulent P. infestans. D, HR-like cell death was observed under the microscope 24 h after inoculation with virulent P. infestans in transgenic leaves. E, H₂O₂ accumulation visualized by DAB was observed under the microscope 12 h after the inoculation. F, Three days after inoculation of wild-type and transgenic potato tubers with virulent P. infestans. G, Six days after inoculation of wild-type and transgenic leaves with A. solani. H, H₂O₂ accumulation was observed 24 h after the inoculation. Scale bars = 10 μm.