Figure 1.

Increasing alternative respiratory pathway capacity exacerbates disease symptoms in potato virus X infected plants. Five-week-old non-transgenic plants (NT), or plants transformed with an 'empty' transformation vector (Control), and plants of transgenic lines with increased alternative respiratory pathway capacity (AP↑) or decreased AP capacity (AP↓) inoculated on one of the lower leaves with purified PVX (0.5 μg/ml) and photographed 11 days later. Compared to the effects of PVX infection on non-transgenic, transgenic control or AOX-E-transgenic plants with decreased AP capacity, increased stunting and deformation of upper leaves was evident in PVX-inoculated plants belonging to Aox-transgenic plants with increased AP capacity.