| Title: | The general odorant receptor GmolOR9 from Grapholita molesta (Lepidoptera: Tortricidae) is mainly tuned to eight host-plant volatiles |
| Author(s): | Chen LH; Tian K; Wang GR; Xu XL; He KH; Liu W; Wu JX; |
| Address: | "State Key Laboratory of Crop Stress Biology in Arid areas, College of Plant Protection, Northwest A&F University, Yangling, China. State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China" |
| ISSN/ISBN: | 1744-7917 (Electronic) 1672-9609 (Linking) |
| Abstract: | "Grapholita molesta is one of the most destructive fruit pests distributed worldwide. Odorant receptors (ORs) located on the dendritic membrane of chemosensory neurons are deemed to be key molecules for sensing exogenous chemical signals. In this study, GmolOR9, a general OR from G. molesta, was functionally characterized. Quantitative real-time polymerase chain reaction revealed that GmolOR9 was more highly expressed in adults than in other stages, including eggs, larvae, and pupae. GmolOR9 expression was highly significantly more in the antennae of females than in those of males, and the highest level occurred in the antennae of 3-day-old female adults. GmolOR9 was broadly tuned to eight of 47 odorant components tested, including (Z)-3-hexenyl acetate, butyl propionate, ethyl hexanoate, ethyl heptanoate, 1-hexanol, (Z)-3-hexenol, 2-ethyl-1-hexanol, and linalool, by in vitro heterologous expression. Furthermore, electroantennogram responses indicated that the effects of dsOR9-injected females to (Z)-3-hexenyl acetate dramatically decreased. These results suggested that GmolOR9 might be involved in detecting host-plant volatiles. Moreover, (Z)-3-hexenyl acetate might serve as a potential attractant for the biological control of G. molesta" |
| Keywords: | Age Factors Amino Acid Sequence Animals Arthropod Antennae/metabolism Female Fruit Herbivory Insect Proteins/chemistry/*genetics/metabolism Larva/genetics/growth & development/physiology Male Moths/genetics/growth & development/*physiology *Odorants Phylo; |
| Notes: | "MedlineChen, Li-Hui Tian, Ke Wang, Gui-Rong Xu, Xiang-Li He, Ke-Hang Liu, Wei Wu, Jun-Xiang eng 2018YFD0201400/The National Key Research and Development Program of China/ Australia 2019/09/19 Insect Sci. 2020 Dec; 27(6):1233-1243. doi: 10.1111/1744-7917.12725. Epub 2019 Oct 9" |
