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Population Genetic Structure of Chlorops oryzae (Diptera, Chloropidae) in China

SIMPLE SUMMARY: Recently, Chlorops oryzae has become one of the major pests of rice in some regions, which has caused serious economic losses. To understand the genetic mechanisms of frequent local outbreaks and population expansion of C. oryzae, we analyzed the population genetic structure using tw...

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Autores principales: Li, Xianya, Wu, Shunjiao, Xu, Yonghong, Liu, Yinghong, Wang, Jia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9032139/
https://www.ncbi.nlm.nih.gov/pubmed/35447769
http://dx.doi.org/10.3390/insects13040327
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author Li, Xianya
Wu, Shunjiao
Xu, Yonghong
Liu, Yinghong
Wang, Jia
author_facet Li, Xianya
Wu, Shunjiao
Xu, Yonghong
Liu, Yinghong
Wang, Jia
author_sort Li, Xianya
collection PubMed
description SIMPLE SUMMARY: Recently, Chlorops oryzae has become one of the major pests of rice in some regions, which has caused serious economic losses. To understand the genetic mechanisms of frequent local outbreaks and population expansion of C. oryzae, we analyzed the population genetic structure using two molecular markers, COI and ITS1 sequences. The results indicated that the C. oryzae populations experienced rapid expansion after a “Bottleneck effect” and the local outbreaks were probably caused by frequent gene flow among populations. ABSTRACT: Frequent outbreaks have made Chlorops oryzae one of the major pests of rice in some regions. In order to understand the ecological adaptation of C. oryzae at the molecular level, and provide a scientific basis for formulating management strategies, we used two molecular markers, COI and ITS1 sequences, to systematically analyze the genetic structure of 31 populations. The higher haplotype diversity and lower nucleotide diversity indicated that the C. oryzae populations experienced rapid expansion after a “Bottleneck effect”. The results of the mismatch distribution, neutrality test (Fu’s Fs < 0, p < 0.001), and haplotype network analysis suggested that the population has recently undergone an expansion. Although genetic differentiation among C. oryzae populations was found to have existed at low/medium levels (Fst: 0.183 for COI, 0.065 for ITS1), the frequent gene flow presented as well (Nm: 2.23 for COI, 3.60 for ITS1) was supposed to be responsible for frequent local outbreaks.
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spelling pubmed-90321392022-04-23 Population Genetic Structure of Chlorops oryzae (Diptera, Chloropidae) in China Li, Xianya Wu, Shunjiao Xu, Yonghong Liu, Yinghong Wang, Jia Insects Article SIMPLE SUMMARY: Recently, Chlorops oryzae has become one of the major pests of rice in some regions, which has caused serious economic losses. To understand the genetic mechanisms of frequent local outbreaks and population expansion of C. oryzae, we analyzed the population genetic structure using two molecular markers, COI and ITS1 sequences. The results indicated that the C. oryzae populations experienced rapid expansion after a “Bottleneck effect” and the local outbreaks were probably caused by frequent gene flow among populations. ABSTRACT: Frequent outbreaks have made Chlorops oryzae one of the major pests of rice in some regions. In order to understand the ecological adaptation of C. oryzae at the molecular level, and provide a scientific basis for formulating management strategies, we used two molecular markers, COI and ITS1 sequences, to systematically analyze the genetic structure of 31 populations. The higher haplotype diversity and lower nucleotide diversity indicated that the C. oryzae populations experienced rapid expansion after a “Bottleneck effect”. The results of the mismatch distribution, neutrality test (Fu’s Fs < 0, p < 0.001), and haplotype network analysis suggested that the population has recently undergone an expansion. Although genetic differentiation among C. oryzae populations was found to have existed at low/medium levels (Fst: 0.183 for COI, 0.065 for ITS1), the frequent gene flow presented as well (Nm: 2.23 for COI, 3.60 for ITS1) was supposed to be responsible for frequent local outbreaks. MDPI 2022-03-25 /pmc/articles/PMC9032139/ /pubmed/35447769 http://dx.doi.org/10.3390/insects13040327 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
Li, Xianya
Wu, Shunjiao
Xu, Yonghong
Liu, Yinghong
Wang, Jia
Population Genetic Structure of Chlorops oryzae (Diptera, Chloropidae) in China
title Population Genetic Structure of Chlorops oryzae (Diptera, Chloropidae) in China
title_full Population Genetic Structure of Chlorops oryzae (Diptera, Chloropidae) in China
title_fullStr Population Genetic Structure of Chlorops oryzae (Diptera, Chloropidae) in China
title_full_unstemmed Population Genetic Structure of Chlorops oryzae (Diptera, Chloropidae) in China
title_short Population Genetic Structure of Chlorops oryzae (Diptera, Chloropidae) in China
title_sort population genetic structure of chlorops oryzae (diptera, chloropidae) in china
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9032139/
https://www.ncbi.nlm.nih.gov/pubmed/35447769
http://dx.doi.org/10.3390/insects13040327
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