Cross-resistance of pink bollworm (Pectinophora gossypiella) to Bacillus thuringiensis toxins

被引:61
作者
Tabashnik, BE
Liu, YB
de Maagd, RA
Dennehy, TJ
机构
[1] Univ Arizona, Dept Entomol, Tucson, AZ 85721 USA
[2] Plant Res Int, Business Unit Cell Cybernet, NL-6700 AA Wageningen, Netherlands
关键词
D O I
10.1128/AEM.66.10.4582-4584.2000
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
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.
引用
收藏
页码:4582 / 4584
页数:3
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