| Title: | "Odorant-binding proteins and chemosensory proteins potentially involved in host plant recognition in the Asian citrus psyllid, Diaphorina citri" |
| Author(s): | Zhang H; Chen JL; Lin JH; Lin JT; Wu ZZ; |
| Address: | "Guangzhou City Key Laboratory of Subtropical Fruit Tree Outbreak Control, Zhongkai University of Agriculture and Engineering, Guangzhou, People's Republic of China" |
| ISSN/ISBN: | 1526-4998 (Electronic) 1526-498X (Linking) |
| Abstract: | "BACKGROUND: Odorant-binding proteins (OBPs) and chemosensory proteins (CSPs) are two families of small water-soluble proteins involved in odor detection and subsequent signal transmission. Determination of their binding mechanisms and specificity towards different odorants is important for developing OBPs/CSPs as targets in pest control management. RESULTS: We re-annotated genes encoding putative OBPs and CSPs in the Asian citrus psyllid (Diaphorina citri) draft genome using various bioinformatic tools. Genes encoding nine OBPs (seven Classic and two Plus-C) and 12 CSPs were identified, consistent with our previous transcriptomic results. Tissue-specific and developmental expression analyses suggested that genes encoding six OBPs and four CSPs were predominantly expressed in antennae, and displayed various expression patterns in different development stages, suggesting potential involvement in olfactory perception. Competitive fluorescence binding assays with 13 candidate ligands, including known host plant volatiles, sex pheromone components and repellents, showed that DcitOBP3 could bind to various odorants, whereas DcitOBP6, 8 and 9 bound specifically to host plant terpenoids. DcitCSP1 and 12 could also bind to certain terpenoids with high binding specificity. CONCLUSION: OBP- and CSP-encoding genes were systematically identified by annotating the draft D. citri genome and those potentially involved in odorant detection and signal transmission were identified by analyzing their tissue-expression profiles and odorant-binding affinities, particularly to the peripheral molecular perception of host plant terpenoids. The identified genes may provide potential targets for efficient pest control. (c) 2020 Society of Chemical Industry" |
| Keywords: | "Animals Arthropod Antennae Citrus Gene Expression Profiling *Hemiptera Insect Proteins Odorants Receptors, Odorant Diaphorina citri chemosensory protein competitive fluorescence binding assays molecular docking odorant-binding protein;" |
| Notes: | "MedlineZhang, He Chen, Jun-Long Lin, Jia-Hao Lin, Jin-Tian Wu, Zhong-Zhen eng 2016A040403118/Guangdong Province Science and Technology Plan Projects/ 2016B02020009/Guangdong Province Science and Technology Plan Projects/ 201704020190/Guangzhou Science and Technology Plan Projects/ 201804010162/Guangzhou Science and Technology Plan Projects/ 201805010008/Guangzhou Science and Technology Plan Projects/ 2017KCXTD018/Innovation Team Project in Guangdong Provincial Department of Education/ 31672063/National Natural Science Foundation of China/ 31701857/National Natural Science Foundation of China/ England 2020/02/23 Pest Manag Sci. 2020 Aug; 76(8):2609-2618. doi: 10.1002/ps.5799. Epub 2020 Mar 2" |
