AGO1 and infection: Differential expression analysis of selected RNAi core components, DCL1, DCL4, AGO1 and RDR2, performed upon infection with V. nonalfalfae for the susceptible cultivar Celeia and the resistant cultivar Wye Target at 1 dpi and 3 dpi didn’t revealed any differences in the expression between infected and control samples (Figure 3a–c,f).