Fig. 4.
Symptom differences in plants infected with AltMV-TGB1L88 and AltMV-TGB1P88. Plants of N. benthamiana agro-inoculated with wild-type TRV (upper row) or TRV carrying a β-ATPase silencing insert (lower row), and either unchallenged or challenged 20 days later with PVX, AltMV-TGB1P88 or AltMV-TGB1L88, respectively (left to right). Plants in which β-ATPase was silenced using TRV:β-ATPase showed hypersensitive reaction to AltMV-TGB1L88 infection. All images were captured at 20 days after potexvirus challenge. β-ATPase mRNA expression level was measured by real time qPCR and fold difference was shown above (WT TRV infected; upper row), or below (TRV:β-ATPase infected; lower row) each plant image.