A few years before RNA-mediated resistance was discovered, cosuppression,
a phenomenon that results in the silencing of both a
transgene and its homologous endogenous gene, was described.
Co-suppression was first uncovered during attempts to overexpress
chalcone synthase (chs), a gene encoding a flower intermediate
pigment biosynthesis enzyme, in Petunia3,4. As well as
producing plants with purple flowers that are no different from
A few years before RNA-mediated resistance was discovered, cosuppression,a phenomenon that results in the silencing of both atransgene and its homologous endogenous gene, was described.Co-suppression was first uncovered during attempts to overexpresschalcone synthase (chs), a gene encoding a flower intermediatepigment biosynthesis enzyme, in Petunia3,4. As well asproducing plants with purple flowers that are no different from
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