FIG. 2.

A CMV RNA1 transgene neutralizes novel resistance to TMV-GFP specific for the NN genotype. The patterns of GFP fluorescence were observed under a UV lamp in tobacco cultivar Samsun NN, either not transformed or transgenic for CMV RNA1 (labeled NN and NN-TG, respectively), and tobacco cultivar Samsun nn, either not transformed or transgenic for CMV RNA1 (labeled nn and nn-TG, respectively). (A) Leaf at 4 dpi with TMV-GFP and kept at either 25°C (upper row) or 33°C (lower row). (B) Whole plant at 14 dpi with TMV-GFP and kept at either 25°C (left panel) or 33°C (right panel). Each row of leaves shows the detached inoculated leaf (i.l.) followed by the detached four consecutive leaves (numbered 1 to 4 in ascending order).