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The termiticidal activity of Sextonia rubra (Mez) van der Werff (Lauraceae) extract and its active constituent rubrynolide

Rodrigues A.M.S., Amusant N., Beauchêne J., Eparvier V., Leménager N., Baudasse C., Espindola L.S., Stien D.. 2011. Pest Management Science, 67 (11) : p. 1420-1423.

BACKGROUND: Termites are degradation agents that inflict severe damage on wood. Some long-lasting Amazonian trees can resist these insects by producing toxic secondary metabolites. These metabolites could potentially replace synthetic termiticidal products which are becoming more restricted to use. RESULTS:Sextonia rubra is resistant to termite-induced degradation. It has been demonstrated that this species naturally produces an ethyl-acetate-soluble termiticidal metabolite, rubrynolide, to protect its wood. Assays in the presence of tropical and invasive termites established that both rubrynolide and crude ethyl acetate extract from S. rubra wood can be used as a treatment for the protection of sensitive woods against termites. CONCLUSION: Rubrynolide and S. rubra extract are promising candidates for the replacement of synthetic termiticides. (Résumé d'auteur)

Mots-clés : bois tropical; bois; reticulitermes flavipes; nasutitermes; préservation du bois; isoptera; insecticide d'origine végétale; ocotea; guyane française; nasutitermes macrocephalus; sextonia rubra

Thématique : Manutention transport stockage et conservation des produits forestiers; Physiologie et biochimie végétales; Technologie des produits forestiers

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