Summary
Alpha-terthienyl, a phototoxic thiophene derivative from species in the Asteraceae reduced feeding and growth of the phytophagous lepidopteran,Euxoa messoria, when incorporated into artificial diets at a concentration of 100 ppm. The effects of this substance were substantially enhanced by including photosensitizing near-UV radiation in the trials. The results suggest that the phototoxic properties of this secondary substance provide significant protection to the plants containing it.
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This work was supported by NSERC and Agriculture Canada.
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Champagne, D.E., Arnason, J.T., Philogène, B.J.R. et al. Photosensitization and feeding deterrence ofEuxoa messoria (Lepidoptera: Noctuiidae) by α-terthienyl, a naturally occurring thiophene from the Asteraceae. Experientia 40, 577–578 (1984). https://doi.org/10.1007/BF01982340
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DOI: https://doi.org/10.1007/BF01982340