文献类型： 外文期刊
作者： Wang, Yinliang 1 ; Dong, Huanhuan 1 ; Qu, Yafei 1 ; Zhou, Yuxin 2 ; Qin, Jianhui 1 ; Li, Kebin 1 ; Luo, Chen 3 ; Ren, Bingzhong 2 ; Cao, Yazhong 1 ; Zhang, Shuai 1 ; Yin, Jiao 1 ; Leal, Walter S. 4 ;
作者机构： 1.Chinese Acad Agr Sci, State Key Lab Biol Plant Dis & Insect Pests, Inst Plant Protect, Beijing 100193, Peoples R China
2.Northeast Normal Univ, Key Lab Vegetat Ecol, Minist Educ, Changchun 130024, Peoples R China
3.Beijing Acad Agr & Forestry Sci, Inst Plant Protect, Beijing 100097, Peoples R China
4.Univ Calif Davis, Dept Mol & Cellular Biol, Davis, CA 95616 USA
期刊名称：CURRENT BIOLOGY （ 影响因子：9.2； 五年影响因子：11.0 ）
ISSN： 0960-9822
年卷期： 2024 年 34 卷 3 期
页码：
收录情况： SCI
摘要： Animals have endogenous clocks that regulate their behavior and physiology. These clocks rely on environmental cues (time givers) that appear approximately every 24 h due to the Earth's rotation; thus, most insects exhibit a circadian rhythm. One notable exception is the scarab beetle, Holotrichia parallela, a severe agricultural pest in China, Japan, South Korea, and India. Females emerge from the soil every other night, reach the canopy of host plants, evert an abdominal gland, and release a pheromone bouquet comprising L-isoleucine methyl ester (LIME) and L-linalool. To determine whether this circa'bi'dian rhythm affects the olfactory system, we aimed to identify H. parallela sex pheromone receptor(s) and study their expression patterns. We cloned 14 odorant receptors (ORs) and attempted de-orphanizing them in the Xenopus oocyte recording system. HparOR14 gave robust responses to LIME and smaller responses to L-linalool. Structural modeling, tissue expression profile, and RNAi treatment followed by physiological and behavioral studies support that HparOR14 is a sex pheromone receptor-the first of its kind discovered in Coleoptera. Examination of the HparOR14 transcript levels throughout the adult's life showed that on sexually active days, gene expression was significantly higher in the scotophase than in the photophase. Additionally, the HparOR14 expression profile showed a circabidian rhythm synchronized with the previously identified pattern of sex pheromone emission. 48 h of electroantennogram recordings showed that responses to LIME were abolished on noncalling nights. In contrast, responses to the green leaf volatile (Z)-3-henexyl acetate remained almost constant throughout the recording period.
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