title: Cross-resistance of pink bollworm (Pectinophora gossypiella) to Bacillus thuringiensis toxins.
abstract: Two strains of pink bollworm (Pectinophora gossypiella) selected in the laboratory for resistance to Bacillus thuringiensis toxin Cry1Ac had substantial cross-resistance to Cry1Aa and Cry1Ab but not to Cry1Bb, Cry1Ca, Cry1Da, Cry1Ea, Cry1Ja, Cry2Aa, Cry9Ca, H04, or H205. The narrow spectrum of resistance and the cross-resistance to activated toxin Cry1Ab suggest that reduced binding of toxin to midgut target sites could be an important mechanism of resistance.
authors.affiliation: Department of Entomology, University of Arizona, Tucson, Arizona 85721, USA. brucet@ag.arizona.edu
authors.forename: B E
authors.initials: BE
authors.lastname: Tabashnik
authors.forename: Y B
authors.initials: YB
authors.lastname: Liu
authors.forename: R A
authors.initials: RA
authors.lastname: de Maagd
authors.forename: T J
authors.initials: TJ
authors.lastname: Dennehy
mesh_terms: D000818:Animals; D000083722:Bacillus thuringiensis Toxins; D001426:Bacterial Proteins / Q000633:toxicity*; D001427:Bacterial Toxins; D004351:Drug Resistance; D004731:Endotoxins / Q000633:toxicity*; D006460:Hemolysin Proteins; D007915:Lepidoptera / Q000145:classification; D013045:Species Specificity
chemical_list: D000083722:Bacillus thuringiensis Toxins; D001426:Bacterial Proteins; D001427:Bacterial Toxins; D004731:Endotoxins; D006460:Hemolysin Proteins; C030956:insecticidal crystal protein, Bacillus Thuringiensis