Journal of Insect Science (2006) 6 (46), p. 22 (Gassmann et al.)

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Aaron J. Gassmann, Yves Carrière and Bruce E. Tabashnik (2006)
Molecular mechanisms of resistance to Bacillus thuringiensis and variation in the magnitude of fitness costs
Journal of Insect Science 6 (46), 22-22
in M. Adams et al. [editors] Abstracts of the Fifth International Symposium on Molecular Insect Science (May 20-24, 2006, Tucson, Arizona USA), 76 pp.
Abstract: During the past decade, 35 studies have tested for fitness costs associated with resistance to the insecticidal toxins produced by the bacterium Bacillus thuringiensis. These studies demonstrate a high level of variation in the extent to which resistance to Bt is associated with fitness trade-offs. More recently, the molecular basis of resistance has come to light for several insect species. Although resistance is often associated with mutations at a caderhin locus, alternative resistance mechanisms exist. We review the literature on fitness costs of resistance to Bt and on the molecular basis of resistance. We consider whether differences in the magnitude or manifestation of fitness costs arise between insect species with contrasting molecular mechanisms of resistance, and whether the fitness costs of resistance differ among insect species that have cadherin-based resistance to Bt.
Database assignments for author(s): Aaron J. Gassmann, Bruce E. Tabashnik, Yves Carriere

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


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Bacillus thuringiensis (entomopathogen)