| Title: | Functional Characterization of a Candidate Sex Pheromone Receptor AlinOR33 Involved in the Chemoreception of Adelphocoris lineolatus |
| Author(s): | Wang Q; Xiao Y; An XK; Shan S; Khashaveh A; Gu SH; Zhang YH; Zhang YJ; |
| Address: | "State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China. Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China. College of Plant Protection, China Agricultural University, Beijing 100193, China" |
| ISSN/ISBN: | 1520-5118 (Electronic) 0021-8561 (Linking) |
| Abstract: | "Sex pheromones are deemed to play a significant role in sexual communication of most insects. Although many sex pheromone components in mirid bugs have been identified, the roles of odorant receptors in sex pheromone perception in Adelphocoris spp. (Hemiptera: Miridae) remain unknown so far. Here, AlinOR33, a candidate sex pheromone receptor in Adelphocoris lineolatus was functionally characterized. Phylogenetic analysis showed that AlinOR33 clustered with the sex pheromone receptor AlucOR4 fromApolygus lucorum. Quantitative real-time PCR measurement revealed that the expression of AlinOR33 increased gradually from nymph to adult stage and reached its peak in the antennae of 3-day-old mated male bugs. The subsequent in situ hybridization demonstrated that AlinOR33 was mainly expressed in sensilla trichoid on the antennae of A. lineolatus. In the two-electrode voltage clamp recordings, AlinOR33/AlinOrco was specifically tuned to four sex pheromone components including butyl butyrate, hexyl hexanoate, trans-2-hexenyl butyrate and hexyl butyrate, and especially most sensitive to the major component trans-2-hexenyl butyrate. After dsAlinOR33 injection, the electroantennogram responses of males to four sex pheromone components were reduced significantly ( approximately 50%). Compared to control bugs, dsAlinOR33-injected male bugs almost lost behavioral preference for trans-2-hexenyl butyrate. Furthermore, the wingbeat frequency of dsAlinOR33-injected male bugs notably declined. Therefore, we conclude that as a candidate sex pheromone receptor, AlinOR33 plays essential roles in the sexual behavior of A. lineolatus" |
| Keywords: | "Animals *Heteroptera/genetics Male Phylogeny *Receptors, Odorant/genetics Receptors, Pheromone/genetics Sensilla *Sex Attractants Adelphocoris lineolatus RNA interference behavior change electrophysiological response odorant receptor sex pheromone two-ele;" |
| Notes: | "MedlineWang, Qi Xiao, Yong An, Xing-Kui Shan, Shuang Khashaveh, Adel Gu, Shao-Hua Zhang, Yun-Hui Zhang, Yong-Jun eng 2021/06/12 J Agric Food Chem. 2021 Jun 23; 69(24):6769-6778. doi: 10.1021/acs.jafc.1c01319. Epub 2021 Jun 11" |
