Can Pyramids and Seed Mixtures Delay Resistance to Bt Crops?

Trends in Biotechnology
Yves CarrièreBruce Tabashnik

Abstract

The primary strategy for delaying the evolution of pest resistance to transgenic crops that produce insecticidal proteins from Bacillus thuringiensis (Bt) entails refuges of plants that do not produce Bt toxins and thus allow survival of susceptible pests. Recent advances include using refuges together with Bt crop 'pyramids' that make two or more Bt toxins effective against the same pest, and planting seed mixtures yielding random distributions of pyramided Bt and non-Bt corn plants within fields. We conclude that conditions often deviate from those favoring the success of pyramids and seed mixtures, particularly against pests with low inherent susceptibility to Bt toxins. For these problematic pests, promising approaches include using larger refuges and integrating Bt crops with other pest management tactics.

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Oct 7, 2016·The Journal of Applied Ecology·Sean C Hackett, Michael B Bonsall
Nov 5, 2016·Science·Bruce E Tabashnik
May 10, 2017·Proceedings of the National Academy of Sciences of the United States of America·Peng WanBruce E Tabashnik
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Apr 1, 2018·Pest Management Science·Yves CarrièreBruce E Tabashnik
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Nov 2, 2018·Proceedings of the National Academy of Sciences of the United States of America·Lin JinYidong Wu
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Jun 30, 2019·Journal of Economic Entomology·Bruce E Tabashnik, Yves Carrière
Dec 9, 2017·Environmental Entomology·David W OnstadAmit Sethi
Aug 3, 2020·Journal of Economic Entomology·Francis P F Reay-JonesDominic D Reisig
Sep 14, 2017·Biotechnology & Genetic Engineering Reviews·Jonathan R LathamAngelika Hilbeck
Jul 10, 2018·Journal of Economic Entomology·Tom R BilboJeremy K Greene
Jul 22, 2020·Proceedings of the National Academy of Sciences of the United States of America·Yves CarrièreScott P Carroll
Dec 28, 2017·Journal of Economic Entomology·Jeannette C MartinezNicholas A Friedenberg

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