Effect of suppressors of RNA silencing (VSR) derived from different RNA and DNA viruses and expressed as transgenes in lines of N. tabacum cv Xanthi on the development of symptoms and induction of the recovery phenotype upon infection of AILV-V.

*Transgenic plant line expressing the following VSR: P1 from Cocksfoot mottle virus (P1 CfMV) and from Rice yellow mottle virus (P1 RYMV), Hc-Pro from Potato virus Y (PVY), AC2 of African cassava mosaic (ACMV), P25 from Potato virus X (PVX), 2b from Cucumber mosaic virus (CMV) and P19 from Tomato bushy stunt virus (TBSV). Symptoms were recorded between 3 and 50 dpi with AILV-V. VC = vein clearing; LR = local ringspots; RS = systemic ringspots; M = mosaic; B = leaf blistering R = recovery. WT = untransformed N. tabacum cv Xanthi; pBin61 = empty vector.