Hairpin RNA-Mediated Silencing of <Emphasis Type="Italic">Plum pox virus</Emphasis> P1 and HC-Pro Genes for Efficient and Predictable Resistance to the Virus
(1) Section of General Pathology and Physiopathology, CRA Plant Pathology Research Institute, Via C.G. Bertero n°22, 00156 Rome, Italy;(2) ENEA CR Casaccia Biotec Gen, Rome, Italy