Significance Statement
The manuscript describes the transfer of siRNA-mediated resistance to an important virus from resistant transgenic plum rootstocks to a wild type apricot scion. There are contradictory results regarding transfer of resistance from rootstock to scion both in herbaceous and woody plants, so we need to gain knowledge on the bases of this mechanism. This approach would allow to have non-transgenic resistant cultivars, avoiding spread of the transgene through pollen (since rootstock are not allowed to flower), and eliminate concerns about eating transgenic fruits, since the apricot grafted onto these rootstocks do not have foreign DNA. Finally, is a very useful strategy when the interest in introducing resistance is on recalcitrant to transformation cultivars or species.