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Antisense RNA inhibition of polygalacturonase gene expression in transgenic tomatoes


Regulation of expression of specific genes by antisense RNA is a naturally occurring mechanism in bacteria1,2, although gene regulation by this mechanism has not yet been observed in higher eukaryotes. However, antisense RNA has been shown to reduce expression of specific genes when injected into frog oocytes3 and Drosophila embryos4. Inhibition of expression of artificially introduced genes has been demonstrated by transient expression of antisense RNA constructs in mammalian cells5,6, and plant protoplasts7, and by stable expression in transgenic plants8. Here, we report a striking inhibition of expression of the endogenous, developmentally regulated gene for polygalacturonase in stably transformed tomato expressing antisense RNA.

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Smith, C., Watson, C., Ray, J. et al. Antisense RNA inhibition of polygalacturonase gene expression in transgenic tomatoes. Nature 334, 724–726 (1988).

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