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Diversity and Molecular Evolution of Odorant Receptor in Hemipteran Insects

SIMPLE SUMMARY: Insects’ behavior and ecology are closely related to their chemosensory systems, during which odorant receptors (ORs) play an essential role in host recognition. Although OR gene evolution has been studied in many insect orders, a comprehensive evolutionary analysis and expression of...

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Autores principales: Tian, Jiahui, Dewer, Youssef, Hu, Haoyuan, Li, Fengqi, Yang, Shiyong, Luo, Chen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8878081/
https://www.ncbi.nlm.nih.gov/pubmed/35206787
http://dx.doi.org/10.3390/insects13020214
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author Tian, Jiahui
Dewer, Youssef
Hu, Haoyuan
Li, Fengqi
Yang, Shiyong
Luo, Chen
author_facet Tian, Jiahui
Dewer, Youssef
Hu, Haoyuan
Li, Fengqi
Yang, Shiyong
Luo, Chen
author_sort Tian, Jiahui
collection PubMed
description SIMPLE SUMMARY: Insects’ behavior and ecology are closely related to their chemosensory systems, during which odorant receptors (ORs) play an essential role in host recognition. Although OR gene evolution has been studied in many insect orders, a comprehensive evolutionary analysis and expression of OR gene gain and loss events among diverse hemipteran species are still needed. In this study, we identified and analyzed the OR genes from hemipteran species systematically. The number of OR genes discovered in each species ranged from less than ten to hundreds. Gene gain and loss events of OR have occurred in several species in the seven major clades classified through phylogenetic analysis. Then, we discovered the amino acid differences between species to understand the molecular evolution of OR in the order Hemiptera through positive selection. This study lays a foundation for subsequent investigations into the molecular mechanisms of Hemiptera olfactory receptors involved in host recognition. ABSTRACT: Olfaction is a critical physiologic process for insects to interact with the environment, especially plant-emitted volatiles, during which odorant receptors (ORs) play an essential role in host recognition. Although OR gene evolution has been studied in many insect orders, a comprehensive evolutionary analysis and expression of OR gene gain and loss events among diverse hemipteran species are still required. In this study, we identified and analyzed 887 OR genes from 11 hemipteran species. The number of OR genes discovered in each species ranged from less than ten to hundreds. Phylogenetic analysis revealed that all identified Hemiptera OR genes were classified into seven major clades. Gene gain and loss events of OR have occurred in several species. Then, by positive selection, we discovered the amino acid differences between species to understand the molecular evolution of OR in the order Hemiptera. Additionally, we discussed how evolutionary analysis can aid the study of insect–plant communication. This study lays a foundation for subsequent investigations into the molecular mechanisms of Hemiptera olfactory receptors involved in host recognition.
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spelling pubmed-88780812022-02-26 Diversity and Molecular Evolution of Odorant Receptor in Hemipteran Insects Tian, Jiahui Dewer, Youssef Hu, Haoyuan Li, Fengqi Yang, Shiyong Luo, Chen Insects Article SIMPLE SUMMARY: Insects’ behavior and ecology are closely related to their chemosensory systems, during which odorant receptors (ORs) play an essential role in host recognition. Although OR gene evolution has been studied in many insect orders, a comprehensive evolutionary analysis and expression of OR gene gain and loss events among diverse hemipteran species are still needed. In this study, we identified and analyzed the OR genes from hemipteran species systematically. The number of OR genes discovered in each species ranged from less than ten to hundreds. Gene gain and loss events of OR have occurred in several species in the seven major clades classified through phylogenetic analysis. Then, we discovered the amino acid differences between species to understand the molecular evolution of OR in the order Hemiptera through positive selection. This study lays a foundation for subsequent investigations into the molecular mechanisms of Hemiptera olfactory receptors involved in host recognition. ABSTRACT: Olfaction is a critical physiologic process for insects to interact with the environment, especially plant-emitted volatiles, during which odorant receptors (ORs) play an essential role in host recognition. Although OR gene evolution has been studied in many insect orders, a comprehensive evolutionary analysis and expression of OR gene gain and loss events among diverse hemipteran species are still required. In this study, we identified and analyzed 887 OR genes from 11 hemipteran species. The number of OR genes discovered in each species ranged from less than ten to hundreds. Phylogenetic analysis revealed that all identified Hemiptera OR genes were classified into seven major clades. Gene gain and loss events of OR have occurred in several species. Then, by positive selection, we discovered the amino acid differences between species to understand the molecular evolution of OR in the order Hemiptera. Additionally, we discussed how evolutionary analysis can aid the study of insect–plant communication. This study lays a foundation for subsequent investigations into the molecular mechanisms of Hemiptera olfactory receptors involved in host recognition. MDPI 2022-02-21 /pmc/articles/PMC8878081/ /pubmed/35206787 http://dx.doi.org/10.3390/insects13020214 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Tian, Jiahui
Dewer, Youssef
Hu, Haoyuan
Li, Fengqi
Yang, Shiyong
Luo, Chen
Diversity and Molecular Evolution of Odorant Receptor in Hemipteran Insects
title Diversity and Molecular Evolution of Odorant Receptor in Hemipteran Insects
title_full Diversity and Molecular Evolution of Odorant Receptor in Hemipteran Insects
title_fullStr Diversity and Molecular Evolution of Odorant Receptor in Hemipteran Insects
title_full_unstemmed Diversity and Molecular Evolution of Odorant Receptor in Hemipteran Insects
title_short Diversity and Molecular Evolution of Odorant Receptor in Hemipteran Insects
title_sort diversity and molecular evolution of odorant receptor in hemipteran insects
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8878081/
https://www.ncbi.nlm.nih.gov/pubmed/35206787
http://dx.doi.org/10.3390/insects13020214
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