A single linkage group confers dominant resistance to Bacillus thuringiensis d-endotoxin Cry1Ac in Helicoverpa armigera

Wu Y., Vassal Jean-Michel, Royer Monique, Pieretti Isabelle. 2009. A single linkage group confers dominant resistance to Bacillus thuringiensis d-endotoxin Cry1Ac in Helicoverpa armigera. Journal of Applied Entomology, 133 : 375-380.

https://doi.org/10.1111/j.1439-0418.2008.01368.x

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Quartile : Q2, Sujet : ENTOMOLOGY

Résumé : The BKBT strain of Helicoverpa armigera was derived from a susceptible BK77 strain (collected from Bouake, Cote D'Ivoire in 1977) through 30 generations of selection with activated Bacillus thuringiensis d-endotoxin Cry1Ac. Unlike recessive inheritance of Cry1Ac resistance in H. armigera from previous reports, resistance to activated Cry1Ac in the BKBT strain is dominant. A backcross approach was used to map dominant resistance to Cry1Ac in the BKBT strain. One hundred and forty-seven informative amplified fragment length polymorphism (AFLP) DNA markers covered all 31 linkage groups of H. armigera. Five AFLP markers linked to Cry1Ac resistance in the BKBT strain were on the same autosomal linkage group, which is the only linkage group contributing dominant Cry1Ac resistance in the BKBT strain of H. armigera.

Mots-clés Agrovoc : Helicoverpa armigera, Gossypium, polymorphisme génétique, résistance aux organismes nuisibles, plante transgénique, génie génétique, Bacillus thuringiensis

Mots-clés géographiques Agrovoc : Côte d'Ivoire

Mots-clés complémentaires : AFLP

Classification Agris : H10 - Ravageurs des plantes
F30 - Génétique et amélioration des plantes

Champ stratégique Cirad : Axe 1 (2005-2013) - Intensification écologique

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