| Title: | An odorant receptor and glomerulus responding to farnesene in Helicoverpa assulta (Lepidoptera: Noctuidae) |
| Author(s): | Wu H; Li RT; Dong JF; Jiang NJ; Huang LQ; Wang CZ; |
| Address: | "State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China; Guangdong Engineering Research Center for Pesticide and Fertilizer, Guangdong Provincial Bioengineering Institute (Guangzhou Sugarcane Industry Research Institute), Guangzhou, China. State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China; College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China. State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China; Forestry College, Henan University of Science and Technology, Luoyang, China. State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China. State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China; College of Life Sciences, University of Chinese Academy of Sciences, Beijing, China. Electronic address: czwang@ioz.ac.cn" |
| DOI: | 10.1016/j.ibmb.2018.11.006 |
| ISSN/ISBN: | 1879-0240 (Electronic) 0965-1748 (Linking) |
| Abstract: | "Terpenoids emitted from herbivore-damaged plants were found to play an important role in regulating tritrophic interactions. How herbivores and their natural enemies perceive terpenoids has not been thoroughly elucidated to date. Using in vivo calcium imaging, we found in this study that farnesene activates one glomerulus in the antennal lobe of female Helicoverpa assulta. The response induced by a mixture of farnesene isomers is stronger than that elicited by E-beta-farnesene alone. In the Xenopus oocyte expression system, HassOR23/ORco is narrowly tuned to farnesene isomers and compounds with similar structures. Finally, the behavioral studies showed that the farnesene isomers have an inhibitory effect on oviposition of female H. assulta, but have an attractive effect on host searching of Campoletis chlorideae, the key endoparasitoid of H. assulta larvae. These results demonstrate that farnesene isomers are encoded by a labeled-line mode in the olfactory system of female H. assulta, suggesting that farnesene as a chemical signal from plants has important behavioral relevance and evolutionary implications in the tritrophic context" |
| Keywords: | "Animals Arthropod Antennae/*metabolism Female Moths/*metabolism/parasitology Oviposition Receptors, Odorant/*metabolism Sesquiterpenes/*metabolism Wasps/physiology Xenopus Farnesene Glomeruli Labeled-line Odorant receptor;" |
| Notes: | "MedlineWu, Han Li, Rui-Ting Dong, Jun-Feng Jiang, Nan-Ji Huang, Ling-Qiao Wang, Chen-Zhu eng Research Support, Non-U.S. Gov't England 2018/11/24 Insect Biochem Mol Biol. 2019 Dec; 115:103106. doi: 10.1016/j.ibmb.2018.11.006. Epub 2018 Nov 20" |
