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      Biochemistry and genetics of insect resistance to Bacillus thuringiensis.

      Annual review of entomology
      Animals, Bacillus thuringiensis, Beetles, genetics, metabolism, Diptera, Insecticide Resistance, Insects, Lepidoptera, Pest Control, Biological

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          Abstract

          Bacillus thuringiensis (Bt) is a valuable source of insecticidal proteins for use in conventional sprayable formulations and in transgenic crops, and it is the most promising alternative to synthetic insecticides. However, evolution of resistance in insect populations is a serious threat to this technology. So far, only one insect species has evolved significant levels of resistance in the field, but laboratory selection experiments have shown the high potential of other species to evolve resistance against Bt. We have reviewed the current knowledge on the biochemical mechanisms and genetics of resistance to Bt products and insecticidal crystal proteins. The understanding of the biochemical and genetic basis of resistance to Bt can help design appropriate management tactics to delay or reduce the evolution of resistance in insect populations.

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          Author and article information

          Journal
          11729083
          10.1146/annurev.ento.47.091201.145234

          Chemistry
          Animals,Bacillus thuringiensis,Beetles,genetics,metabolism,Diptera,Insecticide Resistance,Insects,Lepidoptera,Pest Control, Biological

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