Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 403116
Title Potato virus X and Tobacco mosaic virus-based vectors compatible with the Gateway-TM cloning system
Author(s) Lacorte, C.C.; Ribeiro, S.G.; Lohuis, H.; Goldbach, R.W.; Prins, M.W.
Source Journal of Virological Methods 164 (2010)1-2. - ISSN 0166-0934 - p. 7 - 13.
DOI http://dx.doi.org/10.1016/j.jviromet.2009.11.005
Department(s) Laboratory of Virology
EPS-2
Publication type Refereed Article in a scientific journal
Publication year 2010
Keyword(s) transient expression - gene-expression - viral vectors - plants - tomato - rna - proteins - recombination - resistance
Abstract Virus-based expression vectors are important tools for high-level production of foreign proteins and for gene function analysis through virus induced gene silencing. To exploit further their advantages as fast, high yield replicons, a set of vectors was produced by converting and adapting Potato virus X (PVX) and Tobacco mosaic virus (TMV)-based vectors to allow easy cloning of foreign sequences by the Gateway™ cloning system. Target genes were cloned efficiently by recombination and successfully expressed in Nicotiana benthamiana following inoculation by Agrobacterium (agroinfection). Using green fluorescent protein (GFP) as marker, high-level expression with both PVX-GW and TMV-GW vectors was confirmed. A Gateway inserted phytoene desaturase gene (pds) fragment in PVX-GW and TMV-GW vectors (PVX-GW-PDS and TMC-GW-PDS), induced gene silencing of the endogenous pds gene in N. benthamiana as evidenced by chlorotic leaves. The PVX-GW vector was adapted further by cloning the GFP gene upstream of the Gateway sequences, allowing the easy production of GFP fusions after recombination of a target gene. Subcellular localization of resulting GFP fusion was validated by recombining and expressing the coat protein gene from Tomato chlorotic mottle virus, revealing its nuclear localization. A PVX-GW transient expression assay of a nucleocapsid protein gene fragment of Tomato spotted wilt virus and of a single chain antibody against this protein was shown to confer effective resistance to TSWV infection.
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