Triterpenoides de frutos de Melia azedarach: su potencial como agentes de control de insectos

Authors

  • Martina Díaz Laboratorio de Ecología Química, Facultad de Química, República Oriental del Uruguay. Instituto de Ciencias Agrarias, Consejo Superior de Investigaciones Científicas, Madrid, España. Instituto de Productos Naturales y Agrobiología de Canarias, IPNA-CSIC, España.
  • Carmen Rossini Laboratorio de Ecología Química, Facultad de Química, República Oriental del Uruguay

DOI:

https://doi.org/10.26461/06.12

Keywords:

Limonoides, Paraíso, Epilachna paenulata, Myzus persicae, Rhopalosiphum padi, Spodoptera littoralis

Abstract

Melia azedarach L. (Meliaceae) is native from Asia but it has been naturalized worldwide. Several structurally complex bioactive compounds have been isolated from Asian specimens. This study aimed to determine the anti-insect activity of organic extracts of M. azedarach fruits from Uruguayan populations, and to structurally elucidate the active compounds. Systematic fractionation of ethanolic extracts led to a triterpenoid-rich fraction, with strong activity against different insect models. For instance, it was strongly deterrent against larvae of Spodoptera littoralis (Lepidoptera: Noctuidae) and adults of Epilachna paenulata (Coleoptera: Coccinellidae) in choice experiments. Besides, the same fraction showed settling inhibition activity on Myzus persicae and Rhopalosiphum padi (Homoptera: Aphididae). Such fraction showed no contact toxicity against adults of Nezara viridula (Hemiptera: Pentatomidae). Two compounds never reported for this vegetal species and three previously reported but never evaluated against those insect species, were isolated from that fraction. On the whole, a triterpenoid fraction from the ethanolic extract of fruits of M. azedarach has been evaluated on its anti-insect activity, showing variable potential against different insect pest models, emphasizing the value of testing potential biocontrol products against different insect targets.

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How to Cite

Triterpenoides de frutos de Melia azedarach: su potencial como agentes de control de insectos. (2011). INNOTEC, 6 ene-dic, 56-59. https://doi.org/10.26461/06.12

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