Resistance management strategies

C - Chemistry – Metallurgy – 12 – N

Patent

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Details

C12N 15/82 (2006.01)

Patent

CA 2672762

Insect refuge strategies are described for the management of insect resistance development. The present invention relates generally to the control of pests that cause damage to crop plants, and in particular to corn plants, by their feeding activities directed to root damage, and more particularly to the control of such plant pests by exposing target pests to seeds or mixtures of seeds having multiple different modes of action. The first one or more transgenes and the second one or more transgenes are each, respectively, insecticidal to the same target insect but have different modes of action, and bind either semi-competitively or non-competitively to different binding sites in the target pest. In addition, the treatment of such seed with a chemical or peptide-associated pesticide prior to planting the seed is also disclosed.

La présente invention porte sur des stratégies de refuge d'insectes destinées à la gestion du développement de la résistance des insectes. Cette invention concerne d'une manière générale la lutte contre les organismes nuisibles qui endommagent les cultures, en particulier les cultures de maïs, par leurs activités alimentaires provoquant l'endommagement des racines, et concerne plus particulièrement la lutte contre ces parasites des plantes par exposition d'organismes nuisibles cibles à des semences ou mélanges de semences présentant de multiples modes d'action différents. Un ou plusieurs premiers transgènes et un ou plusieurs deuxièmes transgènes possèdent chacun respectivement une action insecticide vis-à-vis du même insecte cible mais présentent différents modes d'action et se lient de manière soit semi-compétitive soit non compétitive à différents sites de liaison chez l'organisme nuisible cible. Cette invention concerne en outre le traitement de telles semences avec un pesticide chimique ou associé à un peptide avant la plantation des semences.

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