| Title: | Olfactory Gene Families in Scopula subpunctaria and Candidates for Type-II Sex Pheromone Detection |
| Author(s): | Yuan TT; Luo ZJ; Luo ZX; Cai XM; Bian L; Xiu CL; Fu NX; Chen ZM; Zhang LW; Li ZQ; |
| Address: | "Key Laboratory of Biology, Genetics and Breeding of Special Economic Animals and Plants, Ministry of Agriculture and Rural Affairs, Tea Research Institute Chinese Academy of Agricultural Science, Hangzhou 310008, China. Anhui Provincial Key Laboratory of Microbial Control, Anhui Agricultural University, Hefei 230036, China" |
| ISSN/ISBN: | 1422-0067 (Electronic) 1422-0067 (Linking) |
| Abstract: | "Scopula subpunctaria, an abundant pest in tea gardens, produce type-II sex pheromone components, which are critical for its communicative and reproductive abilities; however, genes encoding the proteins involved in the detection of type-II sex pheromone components have rarely been documented in moths. In the present study, we sequenced the transcriptomes of the male and female S. subpunctaria antennae. A total of 150 candidate olfaction genes, comprising 58 odorant receptors (SsubORs), 26 ionotropic receptors (SsubIRs), 24 chemosensory proteins (SsubCSPs), 40 odorant-binding proteins (SsubOBPs), and 2 sensory neuron membrane proteins (SsubSNMPs) were identified in S. subpunctaria. Phylogenetic analysis, qPCR, and mRNA abundance analysis results suggested that SsubOR46 may be the Orco (non-traditional odorant receptor, a subfamily of ORs) of S. subpunctaria. SsubOR9, SsubOR53, and SsubOR55 belonged to the pheromone receptor (PR) clades which have a higher expression in male antennae. Interestingly, SsubOR44 was uniquely expressed in the antennae, with a higher expression in males than in females. SsubOBP25, SsubOBP27, and SsubOBP28 were clustered into the moth pheromone-binding protein (PBP) sub-family, and they were uniquely expressed in the antennae, with a higher expression in males than in females. SsubOBP19, a member of the GOBP2 group, was the most abundant OBP in the antennae. These findings indicate that these olfactory genes, comprising five candidate PRs, three candidate PBPs, and one candidate GOBP2, may be involved in type II sex pheromone detection. As well as these genes, most of the remaining SsubORs, and all of the SsubIRs, showed a considerably higher expression in the female antennae than in the male antennae. Many of these, including SsubOR40, SsubOR42, SsubOR43, and SsubIR26, were more abundant in female antennae. These olfactory and ionotropic receptors may be related to the detection of host plant volatiles. The results of this present study provide a basis for exploring the olfaction mechanisms in S. subpunctaria, with a focus on the genes involved in type II sex pheromones. The evolutionary analyses in our study provide new insights into the differentiation and evolution of lepidopteran PRs" |
| Keywords: | "Animals Female Male *Sex Attractants/genetics/metabolism Phylogeny Smell/genetics Gene Expression Profiling/methods *Moths/genetics/metabolism *Receptors, Odorant/genetics/metabolism Insect Proteins/genetics/metabolism Arthropod Antennae/metabolism Scopul;" |
| Notes: | "MedlineYuan, Ting-Ting Luo, Zi-Jun Luo, Zong-Xiu Cai, Xiao-Ming Bian, Lei Xiu, Chun-Li Fu, Nan-Xia Chen, Zong-Mao Zhang, Long-Wa Li, Zhao-Qun eng Switzerland 2022/12/24 Int J Mol Sci. 2022 Dec 12; 23(24):15775. doi: 10.3390/ijms232415775" |
