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Yang F, Li Y, Gao M, Xia Q, Wang Q, Tang M, Zhou X, Guo H, Xiao Q, Sun L. Comparative expression profiles of carboxylesterase orthologous CXE14 in two closely related tea geometrid species, Ectropis obliqua Prout and Ectropis grisescens Warren. Front Physiol 2023; 14:1194997. [PMID: 37293262 PMCID: PMC10244532 DOI: 10.3389/fphys.2023.1194997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 05/12/2023] [Indexed: 06/10/2023] Open
Abstract
Insect carboxylesterases (CXEs) can be expressed in multiple tissues and play crucial roles in detoxifying xenobiotic insecticides and degrading olfactory cues. Therefore, they have been considered as an important target for development of eco-friendly insect pest management strategies. Despite extensive investigation in most insect species, limited information on CXEs in sibling moth species is currently available. The Ectropis obliqua Prout and Ectropis grisescens Warren are two closely related tea geometrid species, which share the same host of tea plant but differ in geographical distribution, sex pheromone composition, and symbiotic bacteria abundance, providing an excellent mode species for studies of functional diversity of orthologous CXEs. In this study, we focused on EoblCXE14 due to its previously reported non-chemosensory organs-biased expression. First, the EoblCXE14 orthologous gene EgriCXE14 was cloned and sequence characteristics analysis showed that they share a conserved motif and phylogenetic relationship. Quantitative real-time polymerase chain reaction (qRT-PCR) was then used to compare the expression profiles between two Ectropis spp. The results showed that EoblCXE14 was predominately expressed in E. obliqua larvae, whereas EgriCXE14 was abundant in E. grisescens at multiple developmental stages. Interestingly, both orthologous CXEs were highly expressed in larval midgut, but the expression level of EoblCXE14 in E. obliqua midgut was significantly higher than that of EgriCXE14 in E. grisescens midgut. In addition, the potential effect of symbiotic bacteria Wolbachia on the CXE14 was examined. This study is the first to provide comparative expression profiles of orthologous CXE genes in two sibling geometrid moth species and the results will help further elucidate CXEs functions and identify a potential target for tea geometrid pest control.
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Affiliation(s)
- Fengshui Yang
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Yujie Li
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Department of Plant Protection, Henan Institute of Science and Technology, Xinxiang, China
| | - Mengyuan Gao
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
- Department of Plant Protection, Henan Institute of Science and Technology, Xinxiang, China
| | - Qing Xia
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Qian Wang
- College of Advanced Agricultural Sciences, Zhejiang A & F University, Hangzhou, China
| | - Meijun Tang
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Xiaogui Zhou
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Huawei Guo
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Qiang Xiao
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Liang Sun
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture and Rural Affairs, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
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Zhang F, Chen Y, Zhao X, Guo S, Hong F, Zhi Y, Zhang L, Zhou Z, Zhang Y, Zhou X, Li X. Antennal transcriptomic analysis of carboxylesterases and glutathione S-transferases associated with odorant degradation in the tea gray geometrid, Ectropis grisescens (Lepidoptera, Geometridae). Front Physiol 2023; 14:1183610. [PMID: 37082242 PMCID: PMC10110894 DOI: 10.3389/fphys.2023.1183610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 03/21/2023] [Indexed: 04/22/2023] Open
Abstract
Introduction: Carboxylesterases (CXEs) and glutathione S-transferases (GSTs) can terminate olfactory signals during chemosensation by rapid degradation of odorants in the vicinity of receptors. The tea grey geometrid, Ectropis grisescens (Lepidoptera, Geometridae), one of the most devastating insect herbivores of tea plants in China, relies heavily on plant volatiles to locate the host plants as well as the oviposition sites. However, CXEs and GSTs involved in signal termination and odorant clearance in E. grisescens remains unknown. Methods: In this study, identification and spatial expression profiles of CXEs and GSTs in this major tea pest were investigated by transcriptomics and qRT-PCR, respectively. Results: As a result, we identified 28 CXEs and 16 GSTs from female and male antennal transcriptomes. Phylogenetic analyses clustered these candidates into several clades, among which antennal CXEs, mitochondrial and cytosolic CXEs, and delta group GSTs contained genes commonly associated with odorants degradation. Spatial expression profiles showed that most CXEs (26) were expressed in antennae. In comparison, putative GSTs exhibited a diverse expression pattern across different tissues, with one GST expressed specifically in the male antennae. Disscussion: These combined results suggest that 12 CXEs (EgriCXE1, 2, 4, 6, 8, 18, 20-22, 24, 26, and 29) and 5 GSTs (EgriGST1 and EgriGST delta group) provide a major source of candidate genes for odorants degradation in E. grisescens.
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Affiliation(s)
- Fangmei Zhang
- College of Agriculture, Xinyang Agriculture and Forestry University, Xinyang, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yijun Chen
- College of Agriculture, Xinyang Agriculture and Forestry University, Xinyang, China
- College of Agriculture, Xinjiang Agricultural University, Urumqi, China
| | - Xiaocen Zhao
- College of Agriculture, Xinyang Agriculture and Forestry University, Xinyang, China
| | - Shibao Guo
- College of Agriculture, Xinyang Agriculture and Forestry University, Xinyang, China
| | - Feng Hong
- College of Agriculture, Xinyang Agriculture and Forestry University, Xinyang, China
| | - Yanan Zhi
- College of Agriculture, Xinyang Agriculture and Forestry University, Xinyang, China
| | - Li Zhang
- College of Agriculture, Xinyang Agriculture and Forestry University, Xinyang, China
| | - Zhou Zhou
- College of Agriculture, Xinyang Agriculture and Forestry University, Xinyang, China
| | - Yunhui Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xuguo Zhou
- Department of Entomology, University of Kentucky, Lexington, KY, United states
| | - Xiangrui Li
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
- *Correspondence: Xiangrui Li,
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Zhang L, Shen Y, Jiang X, Liu S. Transcriptomic Identification and Expression Profile Analysis of Odorant-Degrading Enzymes from the Asian Corn Borer Moth, Ostrinia furnacalis. INSECTS 2022; 13:1027. [PMID: 36354851 PMCID: PMC9697913 DOI: 10.3390/insects13111027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 11/03/2022] [Accepted: 11/03/2022] [Indexed: 06/16/2023]
Abstract
The Asian corn borer moth Ostrinia furnacalis is an important lepidopteran pest of maize in Asia. Odorant-degrading enzymes (ODEs), including carboxylesterases (CCEs), glutathione S-transferases (GSTs), cytochrome P450s (CYPs), UDP-glycosyltransferases (UGTs), and aldehyde oxidases (AOXs), are responsible for rapid inactivation of odorant signals in the insect antennae. In this study, we performed a transcriptome assembly for the antennae of O. furnacalis to identify putative ODE genes. Transcriptome sequencing revealed 35,056 unigenes, and 21,012 (59.94%) of these were annotated by searching against the reference sequences in the NCBI non-redundant (NR) protein database. For functional classification, these unigenes were subjected to Gene Ontology (GO), Eukaryotic Orthologous Groups (KOG), and Kyoto Encyclopedia of Genes and Genomes (KEGG) annotations. We identified 79 genes encoding putative ODEs: 19 CCEs, 17 GSTs, 24 CYPs, 13 UGTs, and 6 AOXs. BLASTX best hit results indicated that these genes shared quite high amino acid identities with their respective orthologs from other lepidopteran species. Reverse transcription-quantitative PCR showed that OfurCCE2, OfurCCE5, and OfurCCE18 were enriched in male antennae, while OfurCCE7 and OfurCCE10 were enriched in female antennae. OfurCCE14 and OfurCCE15 were expressed at near-equal amounts in the antennae of both sexes. Our findings establish a solid foundation for future studies aimed at understanding the olfactory functions of these genes in O. furnacalis.
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Affiliation(s)
- Liya Zhang
- Anhui Provincial Key Laboratory of Integrated Pest Management on Crops, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Yidan Shen
- Anhui Provincial Key Laboratory of Integrated Pest Management on Crops, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
| | - Xingchuan Jiang
- Anhui Provincial Key Laboratory of Integrated Pest Management on Crops, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China
| | - Su Liu
- Anhui Provincial Key Laboratory of Integrated Pest Management on Crops, School of Plant Protection, Anhui Agricultural University, Hefei 230036, China
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Yi J, Wang S, Wang Z, Wang X, Li G, Zhang X, Pan Y, Zhao S, Zhang J, Zhou JJ, Wang J, Xi J. Identification of Candidate Carboxylesterases Associated With Odorant Degradation in Holotrichia parallela Antennae Based on Transcriptome Analysis. Front Physiol 2021; 12:674023. [PMID: 34566671 PMCID: PMC8461172 DOI: 10.3389/fphys.2021.674023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Accepted: 07/01/2021] [Indexed: 12/04/2022] Open
Abstract
Insects rely on their olfactory systems in antennae to recognize sex pheromones and plant volatiles in surrounding environments. Some carboxylesterases (CXEs) are odorant-degrading enzymes (ODEs), degrading odorant signals to protect the olfactory neurons against continuous excitation. However, there is no report about CXEs in Holotrichia parallela, one of the most major agricultural underground pests in China. In the present study, 20 candidate CXEs were identified based on transcriptome analysis of female and male antennae. Sequence alignments and phylogenetic analysis were performed to investigate the characterization of these candidate CXEs. The expression profiles of CXEs were compared by RT-qPCR analysis between olfactory and non-olfactory tissues of both genders. HparCXE4, 11, 16, 17, 18, 19, and 20 were antenna-biased expressed genes, suggesting their possible roles as ODEs. HparCXE6, 10, 11, 13, and 16 showed significantly higher expression profiles in male antennae, whereas HparCXE18 was expressed more in female antennae. This study highlighted candidate CXE genes linked to odorant degradation in antennae, and provided a useful resource for further work on the H. parallela olfactory mechanism and selection of target genes for integrative control of H. parallela.
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Affiliation(s)
- Jiankun Yi
- College of Plant Science, Jilin University, Changchun, China.,School of Life Science, Huizhou University, Huizhou, China
| | - Shang Wang
- College of Plant Science, Jilin University, Changchun, China
| | - Zhun Wang
- College of Plant Science, Jilin University, Changchun, China.,Changchun Customs Technology Center, Changchun, China
| | - Xiao Wang
- College of Plant Science, Jilin University, Changchun, China
| | - Gongfeng Li
- College of Plant Science, Jilin University, Changchun, China
| | - Xinxin Zhang
- College of Plant Science, Jilin University, Changchun, China
| | - Yu Pan
- College of Plant Science, Jilin University, Changchun, China
| | - Shiwen Zhao
- College of Plant Science, Jilin University, Changchun, China
| | - Juhong Zhang
- College of Plant Science, Jilin University, Changchun, China
| | - Jing-Jiang Zhou
- College of Plant Science, Jilin University, Changchun, China.,Rothamsted Research, University of Hertfordshire, Harpenden, United Kingdom
| | - Jun Wang
- College of Plant Science, Jilin University, Changchun, China
| | - Jinghui Xi
- College of Plant Science, Jilin University, Changchun, China
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5
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Wei H, Tan S, Li Z, Li J, Moural TW, Zhu F, Liu X. Odorant degrading carboxylesterases modulate foraging and mating behaviors of Grapholita molesta. CHEMOSPHERE 2021; 270:128647. [PMID: 33757271 DOI: 10.1016/j.chemosphere.2020.128647] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 09/22/2020] [Accepted: 10/13/2020] [Indexed: 06/12/2023]
Abstract
Odorant degrading carboxylesterases (CXEs) play key roles in the process of odor signal reception via degrading ester odorants. But the functional mechanisms of CXEs in modulating insect behaviors are unclear. Herein, we studied the roles that CXEs played in mating, foraging, and signal receptions of sex pheromones and host volatiles in Grapholita molesta. As a result, 23 candidate CXEs were identified by transcriptome analysis of G. molesta. The GmolCXE1 and 5 highly expressed in the antennae of male moths and GmolCXE14 and 21 abundantly expressed in larval heads, were significantly upregulated after exposure with odors from female adults or fresh ripe fruits respectively. After knockdown of GmolCXE1 and 5, or GmolCXE14 and 21 by RNA interference, the behavioral responses of G. molesta to ester sex pheromones or host volatiles were decreased, by exhibiting an inhibited searching behavior of G. molesta for females or fruits, respectively. Then evidence form GC-MS analysis, showed that the protein GmolCXE1 and GmolCXE5 could metabolize the sex pheromone components (Z/E)-8-dodecenyl acetate to their metabolites products (Z/E)-8-dodecenol, and that GmolCXE14 and GmolCXE21 could metabolize ethyl butanoate and ethyl hexanoate of ripe pears. In addition, fluorescent binding assays verified that GmolCXEs could degrade the free ester odor molecules, but not degrade the odor molecules protected by odorant-binding proteins. Our study not only demonstrated CXEs modulated the mating and foraging behaviors of G. molesta through inactivation of ester sex pheromone and host volatiles, but also discovered great potential molecular targets to develop behavioral inhibitors for pest management.
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Affiliation(s)
- Hongshuang Wei
- Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, 100193, Beijing, China
| | - Shuqian Tan
- Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, 100193, Beijing, China
| | - Zhen Li
- Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, 100193, Beijing, China
| | - Jiancheng Li
- Institute of Plant Protection, Hebei Academy of Agriculture and Forestry Sciences, Baoding, 071000, China
| | - Timothy W Moural
- Department of Entomology, Pennsylvania State University, University Park, PA, 16802, USA
| | - Fang Zhu
- Department of Entomology, Pennsylvania State University, University Park, PA, 16802, USA
| | - Xiaoxia Liu
- Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, 100193, Beijing, China.
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6
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Godoy R, Machuca J, Venthur H, Quiroz A, Mutis A. An Overview of Antennal Esterases in Lepidoptera. Front Physiol 2021; 12:643281. [PMID: 33868009 PMCID: PMC8044547 DOI: 10.3389/fphys.2021.643281] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 03/15/2021] [Indexed: 12/02/2022] Open
Abstract
Lepidoptera are used as a model for the study of insect olfactory proteins. Among them, odorant degrading enzymes (ODEs), that degrade odorant molecules to maintain the sensitivity of antennae, have received less attention. In particular, antennal esterases (AEs; responsible for ester degradation) are crucial for intraspecific communication in Lepidoptera. Currently, transcriptomic and genomic studies have provided AEs in several species. However, efforts in gene annotation, classification, and functional assignment are still lacking. Therefore, we propose to combine evidence at evolutionary, structural, and functional level to update ODEs as well as key information into an easier classification, particularly of AEs. Finally, the kinetic parameters for putative inhibition of ODEs are discussed in terms of its role in future integrated pest management (IPM) strategies.
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Affiliation(s)
- Ricardo Godoy
- Programa de Doctorado en Ciencias de Recursos Naturales, Universidad de La Frontera, Temuco, Chile
- Centro de Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Universidad de La Frontera, Temuco, Chile
| | - Juan Machuca
- Programa de Doctorado en Ciencias de Recursos Naturales, Universidad de La Frontera, Temuco, Chile
- Centro de Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Universidad de La Frontera, Temuco, Chile
| | - Herbert Venthur
- Centro de Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Universidad de La Frontera, Temuco, Chile
| | - Andrés Quiroz
- Centro de Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Universidad de La Frontera, Temuco, Chile
| | - Ana Mutis
- Centro de Investigación Biotecnológica Aplicada al Medio Ambiente (CIBAMA), Universidad de La Frontera, Temuco, Chile
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Ye J, Mang D, Kang K, Chen C, Zhang X, Tang Y, R Purba E, Song L, Zhang QH, Zhang L. Putative carboxylesterase gene identification and their expression patterns in Hyphantria cunea (Drury). PeerJ 2021; 9:e10919. [PMID: 33717687 PMCID: PMC7934681 DOI: 10.7717/peerj.10919] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 01/18/2021] [Indexed: 11/20/2022] Open
Abstract
The olfactory system of insects is important for behavioral activities as it recognizes internal and external volatile stimuli in the environment. Insect odorant degrading enzymes (ODEs), including antennal-specific carboxylesterases (CXEs), are known to degrade redundant odorant molecules or to hydrolyze important olfactory sex pheromone components and plant volatiles. Compared to many well-studied Type-I sex pheromone-producing lepidopteran species, the molecular mechanisms of the olfactory system of Type-II sex pheromone-producing Hyphantria cunea (Drury) remain poorly understood. In the current study, we first identified a total of ten CXE genes based on our previous H. unea antennal transcriptomic data. We constructed a phylogenetic tree to evaluate the relationship of HcunCXEs with other insects’ CXEs, and used quantitative PCR to investigate the gene expression of H. cunea CXEs (HcunCXEs). Our results indicate that HcunCXEs are highly expressed in antennae, legs and wings, suggesting a potential function in degrading sex pheromone components, host plant volatiles, and other xenobiotics. This study not only provides a theoretical basis for subsequent olfactory mechanism studies on H. cunea, but also offers some new insights into functions and evolutionary characteristics of CXEs in lepidopteran insects. From a practical point of view, these HcunCXEs might represent meaningful targets for developing behavioral interference control strategies against H. cunea.
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Affiliation(s)
- Jia Ye
- Anhui Provincial Key Laboratory of Microbial Control, Engineering Research Center of Fungal Biotechnology, Ministry of Education, School of Forestry & Landscape Architecture, Anhui Agricultural University, Hefei, China
| | - Dingze Mang
- Graduate School of Bio-Applications and Systems Engineering, Tokyo University of Agriculture and Technology, Tyoko, Japan
| | - Ke Kang
- Anhui Provincial Key Laboratory of Microbial Control, Engineering Research Center of Fungal Biotechnology, Ministry of Education, School of Forestry & Landscape Architecture, Anhui Agricultural University, Hefei, China.,Anhui Forestry Bureau, Hefei, China
| | - Cheng Chen
- Anhui Provincial Key Laboratory of Microbial Control, Engineering Research Center of Fungal Biotechnology, Ministry of Education, School of Forestry & Landscape Architecture, Anhui Agricultural University, Hefei, China
| | - Xiaoqing Zhang
- Anhui Provincial Key Laboratory of Microbial Control, Engineering Research Center of Fungal Biotechnology, Ministry of Education, School of Forestry & Landscape Architecture, Anhui Agricultural University, Hefei, China
| | - Yanping Tang
- Anhui Provincial Key Laboratory of Microbial Control, Engineering Research Center of Fungal Biotechnology, Ministry of Education, School of Forestry & Landscape Architecture, Anhui Agricultural University, Hefei, China
| | - Endang R Purba
- Structural Cellular Biology Unit, Okinawa Institute of Science and Technology Graduate University, Okinawa, Japan
| | - Liwen Song
- Jilin Provincial Academy of Forestry Sciences, Changchun, China
| | | | - Longwa Zhang
- Anhui Provincial Key Laboratory of Microbial Control, Engineering Research Center of Fungal Biotechnology, Ministry of Education, School of Forestry & Landscape Architecture, Anhui Agricultural University, Hefei, China
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8
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Wang D, Tao J, Lu P, Luo Y, Hu P. The whole body transcriptome of Coleophora obducta reveals important olfactory proteins. PeerJ 2020; 8:e8902. [PMID: 32309046 PMCID: PMC7153557 DOI: 10.7717/peerj.8902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2019] [Accepted: 03/12/2020] [Indexed: 11/21/2022] Open
Abstract
Background The tiny casebearer moth Coleophora obducta, an important defoliator of Larix spp., is a major threat to ecological security in north China. Studies have shown that C. obducta is strongly specific to host plants; it is unable complete its life cycle without Larix spp. The sex pheromones of C. obducta Z5-10:OH have been elucidated; and eight types of antennae sensilla, have been detected, indicating that an exploration of its olfactory proteins is necessary, due to the general lack of information on this topic. Methods We investigated the whole body transcriptome of C. obducta, performed a phylogenetic analysis of its olfactory proteins and produced expression profiles of three pheromone-binding proteins (CobdPBPs) by qRT–PCR. Results We identified 16 odorant binding proteins, 14 chemosensory proteins, three sensory neuron membrane proteins, six odorant degrading enzymes, five antennal esterases, 13 odorant receptors, seven ionotropic receptors and 10 gustatory receptors, including three PBPs and one odorant co-receptor. Additionally, three putative pheromone receptors, two bitter gustatory receptors and five functional ionotropic receptors were found by phylogenetic analysis. The expression profiles of three PBPs in males and females showed that all of them exhibited male-specific expression and two were expressed at significantly higher levels in males. These data provide a molecular foundation from which to explore the olfactory recognition process and may be useful in the development of a new integrated pest management strategy targeting olfactory recognition of C. obducta.
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Affiliation(s)
- Dongbai Wang
- Forestry College, Guangxi University, Nanning, Guangxi, China.,Xingan Vocational and Technical College, Xinganmeng, Inner Mongolia, China
| | - Jing Tao
- Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing, China
| | - Pengfei Lu
- Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing, China
| | - Youqing Luo
- Beijing Key Laboratory for Forest Pest Control, Beijing Forestry University, Beijing, China
| | - Ping Hu
- Forestry College, Guangxi University, Nanning, Guangxi, China.,Xingan Vocational and Technical College, Xinganmeng, Inner Mongolia, China
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9
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Sun L, Wang Q, Zhang Y, Yan Y, Guo H, Xiao Q, Zhang Y. Expression patterns and colocalization of two sensory neurone membrane proteins in Ectropis obliqua Prout, a geometrid moth pest that uses Type-II sex pheromones. INSECT MOLECULAR BIOLOGY 2019; 28:342-354. [PMID: 30474190 DOI: 10.1111/imb.12555] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Sensory neurone membrane proteins (SNMPs) function as essential cofactors for insect sex pheromone detection. In this study, we report two SNMPs in Ectropis obliqua Prout, a serious geometrid pest that produces typical Type-II sex pheromones. Sequence alignments and phylogenetic analyses showed that EoblSNMP1 and EoblSNMP2 belong to two distinct SNMP subfamilies. Quantitative real-time PCR suggested that EoblSNMP1 was male antennae-biased, whereas EoblSNMP2 was highly expressed on male antennae but was also expressed on female antennae and other chemosensory tissues. Additionally, EoblSNMP1 and EoblSNMP2 differed in their developmental expression profiles. In situ hybridization revealed that EoblSNMP1 was sensilla trichodea I specific, whereas EoblSNMP2 was expressed in sensilla trichodea I and the sensilla basiconica; furthermore, EoblSNMP1 and EoblSNMP2 were co-expressed in sensilla trichodea I but in different cells. This study suggests that EoblSNMP1 is functionally distinct from EoblSNMP2 in E. obliqua; EoblSNMP1 may specifically contribute to the recognition of sex pheromones, whereas EoblSNMP2 exhibits multiple olfactory roles. Our findings comprehensively reveal the expression patterns of SNMPs in a lepidopteran species that uses Type-II sex pheromones, providing new insights into the functional evolution of SNMPs from lepidopteran moths with Type-I sex pheromones to those with Type-II sex pheromones.
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Affiliation(s)
- L Sun
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Q Wang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
- College of Agriculture and Food Science, Zhejiang A & F University, Hangzhou, China
| | - Y Zhang
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Y Yan
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - H Guo
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Q Xiao
- Key Laboratory of Tea Quality and Safety Control, Ministry of Agriculture, Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou, China
| | - Y Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
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10
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Jia HR, Sun YF, Luo SP, Wu KM. Characterization of antennal chemosensilla and associated odorant binding as well as chemosensory proteins in the Eupeodes corollae (Diptera: Syrphidae). JOURNAL OF INSECT PHYSIOLOGY 2019; 113:49-58. [PMID: 30080999 DOI: 10.1016/j.jinsphys.2018.08.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 08/01/2018] [Accepted: 08/02/2018] [Indexed: 06/08/2023]
Abstract
Aphidophagous syrphids are important for pest control and pollination in various agroecosystems. However, the mechanism underlying olfaction, which is critical for insect' behavioral processes and fitness, has not been well understood in the family Syrphidae. Hence, we performed a systematic identification and characterisation of the antennal sensilla and two groups of soluble proteins, odorant-binding proteins (OBPs) and chemosensory proteins (CSPs), in the hoverfly Eupeodes corollae. (i) With scanning electron microscopy, four major types of sensilla (chaetic sensilla [two subtypes], trichoid sensilla, basiconic sensilla [two subtypes] and coeloconic sensilla), with numerous microtrichia, were first observed along the entire surface of aristate antennae of both sexes of E. corollae. Of these, only chaetic sensillum was found on the first two antennal segments, scape and pedicel, while the other types of sensilla were located on the flagellum. No marked difference was observed in the morphological structure or distributional pattern of any of the sensilla between the two sexes. (ii) By molecular cloning and bioinformatic analysis, 7 EcorCSPs and 28 EcorOBPs (20 classic OBPs, 5 minus-C OBPs, and 3 plus-C OBPs) were directly identified from the species, which all share the characteristic hallmarks of their family, including the presence of a signal peptide and conserved cysteine signature. (iii) RT-qPCR of these chemosensory genes showed predominately tissue-biased expression patterns; 32 of the 35 EcorOBPs/CSPs were uniquely or primarily expressed in the main olfactory organs, either the antennae or head. (iv) Among these, several genes (EcorCSP2 and EcorOBP1, 9, 12, 15-17, 20) appeared to be antenna-biased. In situ hybridization assays indicated that each antenna-biased chemosensory gene was expressed in a different number of cells, suggesting they might play a more vital role in odour recognition and perception and could be potential candidates to study their biological functions in vivo and in vitro. Together, our current findings provide a basis for future studies on how syrphids utilize chemical cues to regulate their behavior during interactions among the natural enemy, its prey, and host plant in agro-ecosystems.
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Affiliation(s)
- Hui-Ru Jia
- Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100093, China
| | - Yu-Feng Sun
- Laboratory of Agro-products Quality Safety Risk Assessment (Beijing), Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences, Beijing 100093, China
| | - Shu-Ping Luo
- Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100093, China
| | - Kong-Ming Wu
- Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100093, China.
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