Odontoglossum ringspot virus (ORSV)
infects perennial orchids (Phalaenopsis amabilis) and
causes a widespread viral disease. RNA-silencing of viral genes is a promising
and effective way of controlling viral infection in plants. An inverted repeat
(IR) fragment of the ORSV coat protein gene, cp,was inserted into the pXGY1 vector to
generate the silencing construct, pXGY1-ORSV, which was introduced into Nicotiana benthamiana
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