| Title: | Analyses of chemosensory genes provide insight into the evolution of behavioral differences to phytochemicals in Bactrocera species |
| Author(s): | Wu Z; Cui Y; Ma J; Qu M; Lin J; |
| Address: | "Guangzhou City Key Laboratory of Subtropical Fruit Tree Outbreak Control, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, People's Republic of China. Guangzhou Customs Technology Center, Guangzhou 510623, People's Republic of China. Guangzhou City Key Laboratory of Subtropical Fruit Tree Outbreak Control, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, People's Republic of China. Electronic address: linjtian@163.com" |
| DOI: | 10.1016/j.ympev.2020.106858 |
| ISSN/ISBN: | 1095-9513 (Electronic) 1055-7903 (Linking) |
| Abstract: | "Insect olfactory systems have evolved to recognize phytochemicals and respond to olfactory-triggered cues that vary depending on needs. Several Bactrocera species are attracted explicitly to particular phytochemicals, including methyl eugenol (ME) and cue lure/raspberry ketone (CL/RK). The attraction of Bactrocerans to ME/RK is primarily driven by olfaction. Therefore, the divergent behavioral phenotypes are due to the differences in genes expressed in antennae. High quality transcriptomes were generated with mRNA from dissected antennae, to analyze the differences in olfaction-related genes of three ME-responders B. dorsalis, B. papayae and B. correcta and two RK-responders B. cucurbitae and B. tau. Many distinct quantitative and qualitative differences were identified in their respective chemosensory repertoires. Tissue- and sex-specific expression analyses identified antennae-predominant and sex-biased chemosensory genes. Sequence comparison revealed variations among family members of odorant-binding proteins and odorant-receptors between ME-responders and RK-responders. Differences in composition, expression levels, and sequence of proteins encoded by olfactory-related genes were identified between ME-responders and RK-responders. Some of the differences might contribute to the divergence in response to plant-derived odorants. Taken together, our results provide insights into the evolution of an olfactory system at molecular level in Bactrocera ME- and CL/RK-responding species" |
| Keywords: | "Animals Behavior, Animal *Biological Evolution Female Gene Expression Regulation Insect Proteins/genetics/metabolism Male Organ Specificity/genetics Pheromones/metabolism Phylogeny Phytochemicals/*genetics Receptors, Odorant/genetics/metabolism Selection, ;" |
| Notes: | "MedlineWu, Zhongzhen Cui, Yang Ma, Jun Qu, Mengqiu Lin, Jintian eng Research Support, Non-U.S. Gov't 2020/05/31 Mol Phylogenet Evol. 2020 Oct; 151:106858. doi: 10.1016/j.ympev.2020.106858. Epub 2020 May 28" |
