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• W2107034865 abstract "Abstract Background Plant viruses are useful expression vectors because they can mount systemic infections allowing large amounts of recombinant protein to be produced rapidly in differentiated plant tissues. Pepino mosaic virus (PepMV) (genus Potexvirus , family Flexiviridae ), a widespread plant virus, is a promising candidate expression vector for plants because of its high level of accumulation in its hosts and the absence of severe infection symptoms. We report here the construction of a stable and efficient expression vector for plants based on PepMV. Results Agroinfectious clones were produced from two different PepMV genotypes (European and Chilean), and these were able to initiate typical PepMV infections. We explored several strategies for vector development including coat protein (CP) replacement, duplication of the CP subgenomic promoter (SGP) and the creation of a fusion protein using the foot-and-mouth disease virus (FMDV) 2A catalytic peptide. We found that CP replacement vectors were unable to move systemically and that vectors with duplicated SGPs (even heterologous SGPs) suffered from significant transgene instability. The fusion protein incorporating the FMDV 2A catalytic peptide gave by far the best results, maintaining stability through serial passages and allowing the accumulation of GFP to 0.2-0.4 g per kg of leaf tissue. The possible use of PepMV as a virus-induced gene silencing vector to study gene function was also demonstrated. Protocols for the use of this vector are described. Conclusions A stable PepMV vector was generated by expressing the transgene as a CP fusion using the sequence encoding the foot-and-mouth disease virus (FMDV) 2A catalytic peptide to separate them. We have generated a novel tool for the expression of recombinant proteins in plants and for the functional analysis of virus and plant genes. Our experiments have also highlighted virus requirements for replication in single cells as well as intercellular and long-distance movement." @default.
• W2107034865 created "2016-06-24" @default.
• W2107034865 creator A5008668762 @default.
• W2107034865 creator A5038986006 @default.
• W2107034865 creator A5061577219 @default.
• W2107034865 creator A5068289150 @default.
• W2107034865 date "2011-03-11" @default.
• W2107034865 modified "2023-10-06" @default.
• W2107034865 title "Development of expression vectors based on pepino mosaic virus" @default.
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• W2107034865 doi "https://doi.org/10.1186/1746-4811-7-6" @default.
• W2107034865 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/3065447" @default.
• W2107034865 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/21396092" @default.
• W2107034865 hasPublicationYear "2011" @default.
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