Odorant-binding proteins and Chemosensory Proteins from an invasive pest Lissorhoptrus oryzophilus (Coleoptera: Curculionidae)

Xin Yuan, Yan-Dong Jiang, Gui-Yao Wang, Hang Yu, Wen-Wu Zhou, Su Liu, Mao-Fa Yang, Jiaan Cheng, Geoffrey Gurr, Michael O Way, Zeng-Rong Zhu

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


The rice water weevil, Lissorhoptrus oryzophilus Kuschel (Coleoptera: Curculionidae), is a serious pest species both in its original distribution region of northern America and its invaded regions of eastern Asia and southern Europe. The odorant-binding proteins (OBPs) and the chemosensory proteins (CSPs) play important roles in host and mate locating, thus might play a significant role in the success of the species as an invader, which has not been characterized yet. We identified 10 OBPs and 5 CSPs in L. oryzophilus and investigated the expression profiles of these genes in various tissues by quantitative real-time PCR. Five classic OBPs were predominantly expressed in the antennae. CSPs were expressed ubiquitously with particularly high transcript levels in antennae, legs, and wings. Three antenna-specific OBPs (LoOBP1, 8, 11) were up-regulated following 1-3 d of food deprivation and down-regulated afterward. These findings suggest most classic OBPs are likely involved in chemoreception whereas CSPs as well as the minus-C OBPs may have broader physiological functions, which in turn may help to understand the molecular aspects of chemical communication in this invasive insect.
Original languageEnglish
Pages (from-to) 1276-1286
Number of pages11
JournalEnvironmental Entomology
Issue number5
Publication statusPublished - 2016

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