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Safety assessment of transgenic plums and grapevines expressing viral coat protein genes: new insights into real environmental impact of perennial plants engineered for virus resistance. (Articolo in rivista)

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Safety assessment of transgenic plums and grapevines expressing viral coat protein genes: new insights into real environmental impact of perennial plants engineered for virus resistance. (Articolo in rivista) (literal)

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M. Fuchs1,9, M. Cambra2, N. Capote2, W. Jelkmann3, J. Kundu4, V. Laval5, G.P . Martelli6, Minafra6, A., Petrovic7, N., Pfeiffer, P,, Pompe-Novak7, M., Ravelonandro4, M., Saldarelli, P., Stussi-Garaud5, C., Vigne1, E., Zagrai8, I. (2007)
Safety assessment of transgenic plums and grapevines expressing viral coat protein genes: new insights into real environmental impact of perennial plants engineered for virus resistance.
in Journal of plant pathology (Print)
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M. Fuchs1,9, M. Cambra2, N. Capote2, W. Jelkmann3, J. Kundu4, V. Laval5, G.P . Martelli6, Minafra6, A., Petrovic7, N., Pfeiffer, P,, Pompe-Novak7, M., Ravelonandro4, M., Saldarelli, P., Stussi-Garaud5, C., Vigne1, E., Zagrai8, I. (literal)

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The impact of transgenic plums and grapevines expressing viral coat protein (CP) gene constructs on the diversity and dynamics of virus populations was assessed under open and confined conditions in the frame of a research program sponsored by the European Commission. Across all field trials conducted in different locations (France, Romania, and Spain) and environments (continental and Mediterranean), transgenic plums expressing the CP gene of Plum pox virus (PPV) and transgenic grapevines expressing the CP gene of Grapevine fanleaf virus (GFLV) had no detectable effect on the emergence of recombinant PPV and GFLV species over eight-ten and three years, respectively. No statistically significant difference was found in the number and type of aphids, including viruliferous individuals, and other arthropods that visited transgenic and nontransgenic plum trees Further, under confined conditions, no recombinant virus was found to detectable level in transgenic grapevines expressing the CP gene of Grapevine virus A (GVA) or Grapevine virus B (GVB) that were challenged with the homologous or heterologous virus. Also, translocation of transgene-derived products, i.e. protein, mRNAs and siRNAs, did not occur from transgenic grapevine rootstocks expressing the GFLV CP gene to nontransgenic scions. Altogether, our transgenic plums and grapevines expressing viral genes had a neutral impact on virus populations and non-target organisms over extended time. (literal)

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Institut de la Recherche Agronomique et Université Louis Pasteur, Unité Mixte de Recherche Santé de la Vigne et Qualité du Vin, Colmar, France Instituto Valenciano de Investigaciones Agrarias, Departamento de Proteccion Vegetal y Biotecnologia, Moncada, Spain Biologische Bundesanstalt für Land und Fortwirtschaft, Institut für Pflanzenschutz im Obstbau, Dossenheim, Germany Institut de la Recherche Agronomique et Université Victor Ségalen, Unité Mixte de Recherche Génomique, Développement et Pouvoir Pathogène, Bordeaux, France Institut de Biologie Moléculaire des Plantes, Centre National de la Recherche Scientifique et Université Louis Pasteur, Strasbourg, France Università degli Studi di Bari, Dipartimento di Protezione delle Piante e Microbiologia Applicata and sezione di Bari of the Istituto di Virologia vegetale del CNR, Bari, Italy National Institute of Biology, Department of Plant Physiology and Biotechnology, Ljubljana, Slovenia Statiunea de Cercetare si Productie Pomicola, Laborator de Viologie pentru Pomicultura, Bistrita, Romania Department of Plant Pathology, Cornell University, New York State Agricultural Experiment Station, Geneva, NY 14456, USA (literal)

Titolo

Safety assessment of transgenic plums and grapevines expressing viral coat protein genes: new insights into real environmental impact of perennial plants engineered for virus resistance. (literal)

Abstract

These studies were carried out over 3.5 years (2003 to 2006) to provide realistic insights into the significance of recombination in transgenic plants expressing viral genes and the stability of engineered virus resistance under field conditions. We summarize here our major findings and discuss their relevance in regard to the safe use of transgenic crops expressing viral genes for disease management. . It is expected that they will assist national and international regulatory authorities in making scientifically based decisione for the release of virus-resistant transgenic crops. (literal)

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