Figure 6.

Alfalfa mosaic virus (AMV) infection activates plant defence responses. Northern blots to detect mRNA accumulation of several genes (indicated in the middle of the panels) from mock‐ and AMV‐inoculated plants (M and A, respectively) in Nicotiana tabacum (A) and Arabidopsis (B). Inoculated and upper systemic leaves in tobacco and inoculated leaves in Arabidopsis wt and ilr3.2 plants were analysed (indicated at the top). Ethidium bromide (EtBr) staining of ribosomal RNAs was used as RNA loading control. Northern blot to detect the AMV RNA3 (bottom panel) was used to corroborate viral accumulation.