caa a22 4500 467889635 CHVBK 20180406152745.0 cr unu---uuuuu 170328e20060901xx s 000 0 eng 10.1007/s00049-006-0341-0 doi (NATIONALLICENCE)springer-10.1007/s00049-006-0341-0 Oviposition-stimulating activity of ( E )-capsaicin identified in Capsicum annuum fruit and related compounds towards Helicoverpa assulta (Lepidoptera: Noctuidae) [Elektronische Daten] [Han-Seung Lee, Tran Hieu, Young-Joon Ahn] 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 10.5μg/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 2.6μg/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. Birkhäuser Verlag, Basel, 2006 Helicoverpa assulta nationallicence Capsicum annuum nationallicence oviposition stimulant nationallicence capsaicin nationallicence alkaloid nationallicence structure-activity relationship nationallicence Lee Han-Seung School of Agricultural Biotechnology, Seoul National University, 151-921, Seoul, Republic of Korea aut Hieu Tran School of Agricultural Biotechnology, Seoul National University, 151-921, Seoul, Republic of Korea aut Ahn Young-Joon School of Agricultural Biotechnology, Seoul National University, 151-921, Seoul, Republic of Korea aut CHEMOECOLOGY Birkhäuser-Verlag; http://www.birkhauser.ch 16/3(2006-09-01), 153-157 0937-7409 16:3<153 2006 16 49 https://doi.org/10.1007/s00049-006-0341-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00049-006-0341-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lee Han-Seung School of Agricultural Biotechnology, Seoul National University, 151-921, Seoul, Republic of Korea aut NATIONALLICENCE 700 1- Hieu Tran School of Agricultural Biotechnology, Seoul National University, 151-921, Seoul, Republic of Korea aut NATIONALLICENCE 700 1- Ahn Young-Joon School of Agricultural Biotechnology, Seoul National University, 151-921, Seoul, Republic of Korea aut NATIONALLICENCE 773 0- CHEMOECOLOGY Birkhäuser-Verlag; http://www.birkhauser.ch 16/3(2006-09-01), 153-157 0937-7409 16:3<153 2006 16 49 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer