Resistance management in a native plant: nicotine prevents herbivores from compensating for plant protease inhibitors.

@article{Steppuhn2007ResistanceMI,
  title={Resistance management in a native plant: nicotine prevents herbivores from compensating for plant protease inhibitors.},
  author={Anke Steppuhn and Ian T. Baldwin},
  journal={Ecology letters},
  year={2007},
  volume={10 6},
  pages={
          499-511
        }
}
Plants deploy chemical defenses in complex mixtures, which are thought to be adaptive, but experimental tests have used artificial diets rather than plants. Herbivore attack on Nicotiana attenuata rapidly increases the production and accumulation of trypsin proteinase inhibitors (TPI) and the toxic alkaloid nicotine. By transgenically silencing their respective biosynthetic genes, we were able to abolish TPI activity and reduce inducible nicotine by 85%. Nicotine production was not affected by… CONTINUE READING
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