Herbivore-Plant Interactions: Mixed-Function Oxidases and Secondary Plant Substances

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Science  17 Jun 1977:
Vol. 196, Issue 4296, pp. 1349-1352
DOI: 10.1126/science.196.4296.1349


The mixed-function oxidases of a polyphagous insect larva (the southern armyworm, Spodoptera eridania) were found to be induced by a diversity of secondary plant substances. The induction proceeds rapidly and in response to a small quantity of secondary substance. Following induction, the larva is less susceptible to dietary poisoning. It is argued that mixed-function oxidases play a major role in protecting herbivores against chemical stress from secondary plant substances.