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LIN Zhufeng, CHEN Haiyan, JI Xuncong. Insect Resistance to Bt Crops: Possible Mechanism and Resistance Management Strategy[J]. Journal of Tropical Biology, 2015, 6(4): 497-503. doi: 10.15886/j.cnki.rdswxb.2015.04.022
Citation: LIN Zhufeng, CHEN Haiyan, JI Xuncong. Insect Resistance to Bt Crops: Possible Mechanism and Resistance Management Strategy[J]. Journal of Tropical Biology, 2015, 6(4): 497-503. doi: 10.15886/j.cnki.rdswxb.2015.04.022

Insect Resistance to Bt Crops: Possible Mechanism and Resistance Management Strategy

doi: 10.15886/j.cnki.rdswxb.2015.04.022
  • Received Date: 2014-08-13
  • Transgenic Bt crops producing insecticidal crystalline proteins from Bacillus thuringiensis,so-called Cry toxins,have been proved useful in controlling insect pests. However,evolution of insect resistance threatens the continued success of the transgenic crops. Understanding how insects become resistant will provide the basis for insect resistance management. Here we review possible pest resistance mechanisms against transgenic Bt crops and different strategies to cope with resistance,such as high dose-refugee strategy,pyramiding or Cry gene stacking which express several toxins with different modes of action in the same plant,Bt plants with novel Cry toxins,and so on. These approaches should be proposed to deal with resistance in the field to assure successful use of Bt crops for an extended period of time.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Insect Resistance to Bt Crops: Possible Mechanism and Resistance Management Strategy

doi: 10.15886/j.cnki.rdswxb.2015.04.022

Abstract: Transgenic Bt crops producing insecticidal crystalline proteins from Bacillus thuringiensis,so-called Cry toxins,have been proved useful in controlling insect pests. However,evolution of insect resistance threatens the continued success of the transgenic crops. Understanding how insects become resistant will provide the basis for insect resistance management. Here we review possible pest resistance mechanisms against transgenic Bt crops and different strategies to cope with resistance,such as high dose-refugee strategy,pyramiding or Cry gene stacking which express several toxins with different modes of action in the same plant,Bt plants with novel Cry toxins,and so on. These approaches should be proposed to deal with resistance in the field to assure successful use of Bt crops for an extended period of time.

LIN Zhufeng, CHEN Haiyan, JI Xuncong. Insect Resistance to Bt Crops: Possible Mechanism and Resistance Management Strategy[J]. Journal of Tropical Biology, 2015, 6(4): 497-503. doi: 10.15886/j.cnki.rdswxb.2015.04.022
Citation: LIN Zhufeng, CHEN Haiyan, JI Xuncong. Insect Resistance to Bt Crops: Possible Mechanism and Resistance Management Strategy[J]. Journal of Tropical Biology, 2015, 6(4): 497-503. doi: 10.15886/j.cnki.rdswxb.2015.04.022

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