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Insect growth-reducing and antifeedant activity in Eastern North America hardwood species and bioassay-guided isolation of active principles from Prunus serotina

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1 Thirty extracts of wood and bark of hardwood trees from Eastern North America were examined for insect growth-reducing activity in a bioassay with European corn borer, Ostrinia nubilalis, and an antifeedant bioassay with the rice weevil, Sitophilus oryzae.

2 Nine of the bark extracts and four of the wood extracts showed significant growth reducing effects at 0.5% in meridic diets, whereas only two bark extracts and one wood extract showed significant antifeedant effect at the same concentration.

3 Slower growing tree species were more biologically active than fast growing ones. Isolation of the bioactive compounds in one of the active species, Prunus serotina, showed that naringenin, its derivative methoxynaringenin, and eriodictyol were responsible for the antifeedant effects.

Keywords: Deciduous trees; insect growth reducers; plant extracts

Document Type: Research Article

Affiliations: 1: Departments of Biology and Chemistry, University of Ottawa, Ottawa, Ontario, Canada K1N 6N5 and 2: Domtar Innovation Centre, Senneville, QC, Canada

Publication date: November 1, 2000

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