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CHEMOECOLOGY

, Volume 16, Issue 3, pp 153–157 | Cite as

Oviposition-stimulating activity of (E)-capsaicin identified in Capsicum annuum fruit and related compounds towards Helicoverpa assulta (Lepidoptera: Noctuidae)

  • Han-Seung Lee
  • Tran Trung Hieu
  • Young-Joon AhnEmail author
Original Paper

Summary.

The oviposition-stimulating activity of (E)-capsaicin identified in the fruits of red pepper, Capsicum annuum L. (Solanaceae), towards the oriental tobacco budworm, Helicoverpa assulta (Guenée), was examined in the laboratory by using choice and no-choice bioassays. Results were compared with those of the commercially available capsanthin and dihydrocapsaicin, another known constituents of C. annuum fruit, and (Z)-capsaicin. In no-choice oviposition bioassays at 10.5 μg/cm2, (E)-capsaicin was the most active oviposition stimulant. Weak stimulatory activity was observed with capsanthin, (Z)-capsaicin and dihydrocapsaicin. In choice oviposition bioassays at 2.6 μg/cm2, there were significant differences in oviposition-stimulating activity between (E)-capsaicin and each of the other three alkaloids. Structure-activity relationships indicate that the presence of double bond and its trans configuration appeared to play a crucial role in the oviposition-stimulating activity. On the basis of our results, (E)-capsaicin acts as a contact oviposition stimulant of female H. assulta.

Keywords.

Helicoverpa assulta Capsicum annuum oviposition stimulant capsaicin alkaloid structure-activity relationship 

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Copyright information

© Birkhäuser Verlag, Basel 2006

Authors and Affiliations

  • Han-Seung Lee
    • 1
  • Tran Trung Hieu
    • 1
  • Young-Joon Ahn
    • 1
    Email author
  1. 1.School of Agricultural BiotechnologySeoul National UniversitySeoulRepublic of Korea

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