RNA silencing-mediated resistance to a crinivirus in cultivated sweetpotato and development of sweetpotato virus disease following co-infection with a potyvirus Kreuze,J.F.; Klein,I.S.; Lazaro,M.U.; Chuquiyuri,W.J.C.; Morgan,G.L.; Mejia,P.G.C.; Ghislain,M.; Valkonen,J.P.T. Molecular Plant Pathology: 5, 589-598 2008 https://eurekamag.com/research/033/068/033068494.php