Multiple virus resistance in plants

C - Chemistry – Metallurgy – 12 – N

Patent

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C12N 15/82 (2006.01) A01H 5/00 (2006.01) A01H 5/08 (2006.01)

Patent

CA 2759291

The present invention provides gene targets, constructs and methods for the genetic control of plant disease caused by multiple plant viruses. The present invention relates to achieving a plant protective effect through the identification of target coding sequences and the use of recombinant DNA technologies for post- transcriptionally repressing or inhibiting expression of the target coding sequences of plant-parasitic viruses. Protein-expression based approaches may also be utilized to augment phenotype resistance. Thus, transcription of a single transgenic event comprising one or more plant expression cassettes can allow for broad spectrum resistance of a plant to multiple plant viral strains and species among the gemini viruses, tospoviruses, and potexviruses.

La présente invention porte sur des cibles géniques, des produits de construction et des procédés pour la régulation génétique de maladies végétales causées par de multiples virus de plantes. La présente invention porte sur la réalisation d'un effet protecteur de plante par l'identification de séquences codantes cibles et l'utilisation de technologies d'ADN recombinant pour la répression post-transcriptionnelle ou l'inhibition de l'expression des séquences codantes cibles de virus parasites de plante. Des approches basées sur une expression de protéines peuvent également être utilisées pour augmenter la résistance phénotypique. Ainsi, la transcription d'un évènement transgénique unique comprenant une ou plusieurs cassettes d'expression végétale peut permettre une résistance à large spectre d'une plante contre de multiples souches virales de plante et des espèces parmi les virus Gemini, tospovirus et potexvirus.

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