Symptom severity and virus titer of transgenic N. benthamiana T2 plants expressing SP/HrpZPsph and BNYVV-derived dsRNA in comparison to T2 plants expressing either SP/HrpZPsph or BNYVV-derived dsRNA, 30 days after challenge with BNYVV.

1− absence of symptoms, + leaf curling, ++ faint mosaic, mild stunting, +++ severe mosaic, leaf distortion, general stunting.2−− value indicative of virus absence, + close to the positive threshold (three times the negative control), ++ half reading of positive control (non-transgenic), +++ equal to the positive control.3numbers denote number of plants in corresponding categories.4numbers denote percent of plants in corresponding categories.