Ribozymes capable of conferring resistance to potyvirus infection, and plants expressing said ribozymes

摘要

The invention relates to a nucleic acid molecule, called &lang&lang& ribozyme &rang&rang&, having endoribonuclease activity, comprising at least one hybridising region and at least one catalytic region, said hybridising region being complementary to one or more target regions of the genomic (+) RNA of a potyvirus, and/or to one or more target regions of the replicative (-) strand RNA of a potyvirus, with the proviso that the said target region does not consist of the GUC triplet located at position 8122-8124 of the PVYn strain or the equivalent triplet of other potyviruses.