Journal of Applied Entomology (2009) 133, 375-380

Y. Wu, J.-M. Vassal, M. Royer and I. Pieretti (2009)
A single linkage group confers dominant resistance to Bacillus thuringiensis delta-endotoxin Cry1Ac in Helicoverpa armigera
Journal of Applied Entomology 133 (5), 375-380
Abstract: 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 delta-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.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Monique Royer

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
resistance/tolerance/defence of host

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Helicoverpa armigera		Ivory Coast
Bacillus thuringiensis Cry1A-toxin (entomopathogen)	Helicoverpa armigera