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Induction of a Highly Specific Antiviral State in Transgenic Plants: Implications for Regulation of Gene Expression and Virus Resistance.
Transgenic tobacco plants expressing either a full-length form of the tobacco etch virus (TEV) coat protein or a form truncated at the N terminus of the TEV coat protein were initially susceptible toExpand
Distinct functions of capsid protein in assembly and movement of tobacco etch potyvirus in plants.
Tobacco etch potyvirus engineered to express the reporter protein beta‐glucuronidase (TEV‐GUS) was used for direct observation and quantitation of virus translocation in plants. Four TEV‐GUS mutantsExpand
The nucleotide sequence of the coding region of tobacco etch virus genomic RNA: evidence for the synthesis of a single polyprotein.
The complete nucleotide sequence of the tobacco etch virus (TEV) RNA genome has been determined excepting only the nucleotide(s) present at the extreme 5' terminus. The assembled TEV genomic sequenceExpand
Transgenic plant virus resistance mediated by untranslatable sense RNAs: expression, regulation, and fate of nonessential RNAs.
Haploid leaf tissue of tobacco cultivars K326 and K149 was transformed with several transgenes containing cDNA of the potato virus Y (PVY) coat protein (CP) open reading frame (ORF). The variousExpand
Expression of virus-encoded proteinases: functional and structural similarities with cellular enzymes.
Many viruses express their genome, or part of their genome, initially as a polyprotein precursor that undergoes proteolytic processing. Molecular genetic analyses of viral gene expression haveExpand
Untranslatable transcripts of the tobacco etch virus coat protein gene sequence can interfere with tobacco etch virus replication in transgenic plants and protoplasts.
Transgenic tobacco plants which express untranslatable sense or antisense forms of the tobacco etch virus potyvirus (TEV) coat protein (CP) gene sequence have been generated. One of seven transgenicExpand
Molecular genetic analysis of a plant virus polyprotein cleavage site: a model.
The RNA genome of tobacco etch virus (TEV) is expressed as a polyprotein which is co- and post-translationally processed by viral encoded proteinases. The TEV 49,000 dalton (49-kDa) proteinaseExpand
A second proteinase encoded by a plant potyvirus genome.
The RNA genome of tobacco etch virus (TEV) encodes a large polyprotein precursor that is processed to mature proteins by virus‐specific proteinases. Cleavage sites located within theExpand
A viral cleavage site cassette: identification of amino acid sequences required for tobacco etch virus polyprotein processing.
Mature viral-encoded proteins of tobacco etch virus (TEV) arise by proteolytic processing of a large precursor. The proteinase responsible for most of these cleavages is a viral-encoded 49-kDaExpand
Genetic and biochemical dissection of transgenic RNA-mediated virus resistance.
RNA-mediated virus resistance has been observed in transgenic plants at varying frequencies, suggesting that a nuclear requirement or other pre-condition must be met. This study was undertaken toExpand
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