Delayed Resistance to Transgenic Cotton in Pink Bollworm

Overview

Journal Proc Natl Acad Sci U S A

Specialty Science

Date 2005 Oct 18

PMID 16227430

Citations 37

Authors

Bruce E Tabashnik

Timothy J Dennehy

Yves Carriere

Affiliations

Soon will be listed here.

Abstract

Transgenic crops producing Bacillus thuringiensis (Bt) toxins kill some key insect pests and thus can reduce reliance on insecticides. Widespread planting of such Bt crops increased concerns that their usefulness would be cut short by rapid evolution of resistance to Bt toxins by pests. Pink bollworm (Pectinophora gossypiella) is a major pest that has experienced intense selection for resistance to Bt cotton in Arizona since 1997. We monitored pink bollworm resistance to Bt toxin for 8 years with laboratory bioassays of strains derived annually from 10-17 cotton fields statewide. Bioassay results show no net increase from 1997 to 2004 in the mean frequency of pink bollworm resistance to Bt toxin. A synthesis of experimental and modeling results suggests that this delay in resistance can be explained by refuges of cotton without Bt toxin, recessive inheritance of resistance, incomplete resistance, and fitness costs associated with resistance.

Citing Articles

Fitness Costs and Incomplete Resistance Associated with Delayed Evolution of Practical Resistance to Bt Crops.

Carriere Y, Tabashnik B Insects. 2023; 14(3).

PMID: 36975899 PMC: 10051223. DOI: 10.3390/insects14030214.

Molecular Genetic Basis of Lab- and Field-Selected Bt Resistance in Pink Bollworm.

Fabrick J, Li X, Carriere Y, Tabashnik B Insects. 2023; 14(2).

PMID: 36835770 PMC: 9959750. DOI: 10.3390/insects14020201.

Development and evaluation of triple gene transgenic cotton lines expressing three genes (Cry1Ac-Cry2Ab-EPSPS) for lepidopteran insect pests and herbicide tolerance.

Siddiqui H, Asad S, Naqvi R, Asif M, Liu C, Liu X Sci Rep. 2022; 12(1):18422.

PMID: 36319662 PMC: 9626562. DOI: 10.1038/s41598-022-22209-w.

A versatile contribution of both aminopeptidases N and ABC transporters to Bt Cry1Ac toxicity in the diamondback moth.

Sun D, Zhu L, Guo L, Wang S, Wu Q, Crickmore N BMC Biol. 2022; 20(1):33.

PMID: 35120513 PMC: 8817492. DOI: 10.1186/s12915-022-01226-1.

Pest susceptibility, yield and fiber traits of transgenic cotton cultivars in Multan, Pakistan.

Karar H, Bashir M, Haider M, Haider N, Khan K, Ghramh H PLoS One. 2020; 15(7):e0236340.

PMID: 32692775 PMC: 7373299. DOI: 10.1371/journal.pone.0236340.

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