| Title: | Functional differentiation of two general odorant-binding proteins to sex pheromones in Spodoptera frugiperda |
| Author(s): | Yang HH; Li SP; Yin MZ; Zhu XY; Li JB; Zhang YN; Li XM; |
| Address: | "College of Life Sciences, Huaibei Normal University, Huaibei 235000, China. Institute of Plant Protection, Suzhou Academy of Agricultural Sciences, Suzhou 234000, China. Institute of Plant Protection, Suzhou Academy of Agricultural Sciences, Suzhou 234000, China. Electronic address: lijinbu0991@163.com. College of Life Sciences, Huaibei Normal University, Huaibei 235000, China. Electronic address: ynzhang_insect@163.com. College of Life Sciences, Huaibei Normal University, Huaibei 235000, China. Electronic address: lixiaomingchnu@126.com" |
| DOI: | 10.1016/j.pestbp.2023.105348 |
| ISSN/ISBN: | 1095-9939 (Electronic) 0048-3575 (Linking) |
| Abstract: | "A precise chemosensory system can help insects complete various important behavioral responses by accurately identifying different external odorants. Therefore, deeply understanding the mechanism of insect recognition of important odorants will help us develop efficient and environmentally-friendly behavioral inhibitors. Spodoptera frugiperda is a polyphagous pest that feeds on >350 different host plants worldwide and also harms maize production in China. However, the molecular mechanism of the first step for males to use odorant-binding proteins (OBPs) to recognize sex pheromones remains unclear. Here, we obtained 50 OBPs from the S. frugiperda genome, and the expression level of SfruGOBP1 in females was significantly higher than that in males, whereas SfruGOBP2 displayed male-biased expression. Fluorescence competitive binding assays showed that only SfruGOBP2 showed binding affinities for the four sex pheromones of female S. frugiperda. Subsequently, we identified some key amino acid residues that can participate in the interaction between SfruGOBP2 and sex pheromones using molecular docking and site-directed mutagenesis methods. These findings will help us explore the interaction mechanism between GOBPs and sex pheromones in moths, and provide important target genes for developing new mating inhibitors of S. frugiperda in the future" |
| Keywords: | Animals Female Male *Sex Attractants/metabolism Spodoptera/genetics/metabolism Odorants Molecular Docking Simulation Insect Proteins/metabolism *Moths/metabolism Pheromones/metabolism Fluorescence competitive binding assay Odorant-binding protein Sex pher; |
| Notes: | "MedlineYang, Hui-Hui Li, Shu-Peng Yin, Mao-Zhu Zhu, Xiu-Yun Li, Jin-Bu Zhang, Ya-Nan Li, Xiao-Ming eng 2023/03/25 Pestic Biochem Physiol. 2023 Apr; 191:105348. doi: 10.1016/j.pestbp.2023.105348. Epub 2023 Jan 24" |
