Global Patterns of Insect Resistance to Transgenic Bt Crops: The First 25 Years
University of Arizona · U.S. Arid Land Agricultural Research Center
Abstract
Crops genetically engineered to produce insecticidal proteins from the bacterium Bacillus thuringiensis (Bt) have improved pest management and reduced reliance on insecticide sprays. However, evolution of practical resistance by some pests has reduced the efficacy of Bt crops. We analyzed global resistance monitoring data for 24 pest species based on the first 25 yr of cultivation of Bt crops including corn, cotton, soybean, and sugarcane. Each of the 73 cases examined represents the response of one pest species in one country to one Bt toxin produced by one or more Bt crops. The cases of practical resistance rose from 3 in 2005 to 26 in 2020. Practical resistance has been documented in some populations of 11…
Citation impact
- FWCI
- 28.64
- Percentile
- 100%
- References
- 137
Authors
3Topics & keywords
- Bacillus thuringiensis
- Biology
- PEST analysis
- Genetically modified crops
- Resistance (ecology)
- Genetically modified organism
- Genetically modified maize
- Bt cotton