Journal of Chemical Ecology

, Volume 28, Issue 5, pp 873–896

Postgenomic Chemical Ecology: From Genetic Code to Ecological Interactions

Authors

  • May R. Berenbaum
    • Department of Entomology, 320 Morrill HallUniversity of Illinois
Article

DOI: 10.1023/A:1015260931034

Cite this article as:
Berenbaum, M.R. J Chem Ecol (2002) 28: 873. doi:10.1023/A:1015260931034

Abstract

Environmental response genes are defined as those encoding proteins involved in interactions external to the organism, including interactions among organisms and between the organism and its abiotic environment. The general characteristics of environmental response genes include high diversity, proliferation by duplication events, rapid rates of evolution, and tissue-or temporal-specific expression. Thus, environmental response genes include those that encode proteins involved in the manufacture, binding, transport, and breakdown of semiochemicals. Postgenomic elucidation of the function of such genes requires an understanding of the chemical ecology of the organism and, in particular, of the “small molecules” that act as selective agents either by promoting survival or causing selective mortality. In this overview, the significance of several groups of environmental response genes is examined in the context of chemical ecology. Cytochrome P-450 monooxygenases provide a case in point; these enzymes are involved in the biosynthesis of furanocoumarins (furocoumarins), toxic allelochemicals, in plants, as well as in their detoxification by lepidopterans. Biochemical innovations in insects and plants have historically been broadly defined in a coevolutionary context. Considerable insight can be gained by defining with greater precision components of those broad traits that contribute to diversification. Molecular approaches now allow chemical ecologists to characterize specifically those biochemical innovations postulated to lead to adaptation and diversification in plant/insect interactions.

Allelochemicalcytochrome P-450environmental response geneHelicoverpaolfactory receptorPapiliosubstrate recognition sitexenobiotic response elementfuranocoumarinfurocoumarin

Copyright information

© Plenum Publishing Corporation 2002