Summary
Cross protection of plant viruses is a phenomenon in which plants infected with one strain of a virus are protected from the effects of superinfection by other related strains. Recently, we have succeeded in the introduction and expression of a cDNA copy of the tobacco mosaic virus (TMV) genomic RNA in transgenic tobacco plants. Using this system, we introduced a cDNA copy of a mild strain of TMV into tobacco plants. The transgenic plants did not develop any severe symptoms upon inoculation with a virulent TMV strain, indicating that these transgenic plants were cross protected against TMV infection. The system described here can be a useful model system to study the mechanism(s) of cross protection.
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Communicated by J. Schell
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Yamaya, J., Yoshioka, M., meshi, T. et al. Cross protection in transgenic tobacco plants expressing a mild strain of tobacco mosaic virus. Mol Gen Genet 215, 173–175 (1988). https://doi.org/10.1007/BF00331321
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DOI: https://doi.org/10.1007/BF00331321