Characterization of RNA-mediated resistance to tomato spotted wilt virus in transgenic tobacco plants expressing NSM gene sequences

Characterization of RNA-mediated resistance to tomato spotted wilt virus in transgenic tobacco... Transgenic Nicotiana tabacum plants expressing RNA sequences of the tomato spotted wilt virus NSM gene, which encodes the putative viral movement protein, were found to be highly resistant to infection with the virus. Expression of untranslatable as well as anti-sense RNA of the NSM gene resulted in resistance levels as high as those in plants expressing translatable RNA sequences. For all three types of transgenic plants resistance levels of up to 100% were reached in the S2 progeny. These results indicate that the resistance mediated by the NSM gene is accomplished by expression of transcripts rather than protein in transgenic plants, similar to previously observed N gene-mediated resistance. Protoplast inoculations revealed that resistant plants expressing NSM are, in contrast to N transgenic resistant plants, not resistant at the cellular level. This suggests the RNA-mediated resistance mechanism against TSWV targets viral mRNAs rather than the viral genome. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Characterization of RNA-mediated resistance to tomato spotted wilt virus in transgenic tobacco plants expressing NSM gene sequences

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Publisher
Kluwer Academic Publishers
Copyright
Copyright © 1997 by Kluwer Academic Publishers
Subject
Life Sciences; Biochemistry, general; Plant Sciences; Plant Pathology
ISSN
0167-4412
eISSN
1573-5028
D.O.I.
10.1023/A:1005729808191
Publisher site
See Article on Publisher Site

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