Establishment of Real-Time PCR Method to Differentiate <i>Phlebotomus sichuanensis</i> (Diptera, Psychodidae) from <i>P. chinensis</i> s.s. Based on Whole Mitochondrial Genome Analysis

<i>Phlebotomus sichuanensis</i>, considered a potential vector for visceral leishmaniasis (VL), is distributed in the southern Gansu and northern Sichuan regions in China. However, the high similarity in the morphology of <i>P. sichuanensis</i> and <i>P. chinensis</i...

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Main Authors: Haowei Dong, Wenqi Shan, Hao Yuan, Qiuming Zhou, Wenbing Zhong, Maimaitijiang Wumaier, Kang Wang, Anjie Yang, Bing Rui, Hua Shi, Huiying Chen, Xiangyu Li, Yajun Ma, Heng Peng
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Language:English
Published: MDPI AG 2024-12-01
Series:Life
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Online Access:https://www.mdpi.com/2075-1729/14/12/1610
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author Haowei Dong
Wenqi Shan
Hao Yuan
Qiuming Zhou
Wenbing Zhong
Maimaitijiang Wumaier
Kang Wang
Anjie Yang
Bing Rui
Hua Shi
Huiying Chen
Xiangyu Li
Yajun Ma
Heng Peng
author_facet Haowei Dong
Wenqi Shan
Hao Yuan
Qiuming Zhou
Wenbing Zhong
Maimaitijiang Wumaier
Kang Wang
Anjie Yang
Bing Rui
Hua Shi
Huiying Chen
Xiangyu Li
Yajun Ma
Heng Peng
author_sort Haowei Dong
collection DOAJ
description <i>Phlebotomus sichuanensis</i>, considered a potential vector for visceral leishmaniasis (VL), is distributed in the southern Gansu and northern Sichuan regions in China. However, the high similarity in the morphology of <i>P. sichuanensis</i> and <i>P. chinensis</i> s.s. poses unresolved taxonomic challenges. In this study, phlebotomine sand flies were collected from three locations in the southern Gansu and northern Sichuan regions (SCB group) and three locations that are the dominant distribution areas of <i>P. chinensis</i> s.s. (ZHB group). Their whole mitochondrial genomes were sequenced and analyzed. The differential analysis revealed that there were 339 fixed differential sites in the mitochondrial genome-coding region of <i>P. chinensis</i> s.s. and <i>P. sichuanensis</i>, among which the <i>COI</i> gene had the most differential sites (57), followed by <i>ND5</i> (46), <i>ND4</i> (38), and <i>CYTB</i> (37), while <i>ATP8</i> had the least differential sites (4). The molecular genetic <i>p</i>-distance was calculated based on 13 protein-coding regions, and the genetic distance ranged from 0.001 to 0.018 in the ZHB group and from 0.001 to 0.006 in the SCB group, while the interspecies molecular genetic distance was 0.464–0.466 between the two groups. A phylogenetic maximum likelihood tree was constructed from 16 samples via tandem sequence of 13 protein-coding regions, and the topology showed that the ZHB and SCB groups formed separate clusters. A real-time PCR method was established based on the differences in the COI fragment, which can identify <i>P. sichuanensis</i> from <i>P. chinensis</i> s.s. effectively. This study presents objective evidence of the genetic differentiation between <i>P. sichuanensis</i> and <i>P. chinensis</i> s.s., and provides a method for identifying these two morphologically highly similar VL-transmitting sandflies.
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spelling doaj-art-bc5dff8967b74c6488a61dd689aab2f92024-12-27T14:36:05ZengMDPI AGLife2075-17292024-12-011412161010.3390/life14121610Establishment of Real-Time PCR Method to Differentiate <i>Phlebotomus sichuanensis</i> (Diptera, Psychodidae) from <i>P. chinensis</i> s.s. Based on Whole Mitochondrial Genome AnalysisHaowei Dong0Wenqi Shan1Hao Yuan2Qiuming Zhou3Wenbing Zhong4Maimaitijiang Wumaier5Kang Wang6Anjie Yang7Bing Rui8Hua Shi9Huiying Chen10Xiangyu Li11Yajun Ma12Heng Peng13Department of Medical Pathogen Biology, College of Basic Medicine, Naval Medical University, Shanghai 200433, ChinaCollege of Naval Medicine, Naval Medical University, Shanghai 200433, ChinaCollege of Naval Medicine, Naval Medical University, Shanghai 200433, ChinaCollege of Naval Medicine, Naval Medical University, Shanghai 200433, ChinaDepartment of Vector Control, Haikou Center for Disease Control and Prevention, Haikou 570100, ChinaInstitute of Parasitic and Brucellosis Prevention and Treatment, Center for Disease Control and Prevention of Xinjiang Uygur Autonomous Region, Urumqi 830000, ChinaCenter for Disease Control and Prevention of Yangquan City, Yangquan 045000, ChinaCollege of Naval Medicine, Naval Medical University, Shanghai 200433, ChinaDepartment of Medical Pathogen Biology, College of Basic Medicine, Naval Medical University, Shanghai 200433, ChinaChinese PLA Center for Disease Control and Prevention, Beijing 100071, ChinaDepartment of Medical Pathogen Biology, College of Basic Medicine, Naval Medical University, Shanghai 200433, ChinaDepartment of Medical Pathogen Biology, College of Basic Medicine, Naval Medical University, Shanghai 200433, ChinaCollege of Naval Medicine, Naval Medical University, Shanghai 200433, ChinaDepartment of Medical Pathogen Biology, College of Basic Medicine, Naval Medical University, Shanghai 200433, China<i>Phlebotomus sichuanensis</i>, considered a potential vector for visceral leishmaniasis (VL), is distributed in the southern Gansu and northern Sichuan regions in China. However, the high similarity in the morphology of <i>P. sichuanensis</i> and <i>P. chinensis</i> s.s. poses unresolved taxonomic challenges. In this study, phlebotomine sand flies were collected from three locations in the southern Gansu and northern Sichuan regions (SCB group) and three locations that are the dominant distribution areas of <i>P. chinensis</i> s.s. (ZHB group). Their whole mitochondrial genomes were sequenced and analyzed. The differential analysis revealed that there were 339 fixed differential sites in the mitochondrial genome-coding region of <i>P. chinensis</i> s.s. and <i>P. sichuanensis</i>, among which the <i>COI</i> gene had the most differential sites (57), followed by <i>ND5</i> (46), <i>ND4</i> (38), and <i>CYTB</i> (37), while <i>ATP8</i> had the least differential sites (4). The molecular genetic <i>p</i>-distance was calculated based on 13 protein-coding regions, and the genetic distance ranged from 0.001 to 0.018 in the ZHB group and from 0.001 to 0.006 in the SCB group, while the interspecies molecular genetic distance was 0.464–0.466 between the two groups. A phylogenetic maximum likelihood tree was constructed from 16 samples via tandem sequence of 13 protein-coding regions, and the topology showed that the ZHB and SCB groups formed separate clusters. A real-time PCR method was established based on the differences in the COI fragment, which can identify <i>P. sichuanensis</i> from <i>P. chinensis</i> s.s. effectively. This study presents objective evidence of the genetic differentiation between <i>P. sichuanensis</i> and <i>P. chinensis</i> s.s., and provides a method for identifying these two morphologically highly similar VL-transmitting sandflies.https://www.mdpi.com/2075-1729/14/12/1610<i>Phlebotomus</i>classificationmitochondrial genomereal-time PCR
spellingShingle Haowei Dong
Wenqi Shan
Hao Yuan
Qiuming Zhou
Wenbing Zhong
Maimaitijiang Wumaier
Kang Wang
Anjie Yang
Bing Rui
Hua Shi
Huiying Chen
Xiangyu Li
Yajun Ma
Heng Peng
Establishment of Real-Time PCR Method to Differentiate <i>Phlebotomus sichuanensis</i> (Diptera, Psychodidae) from <i>P. chinensis</i> s.s. Based on Whole Mitochondrial Genome Analysis
Life
<i>Phlebotomus</i>
classification
mitochondrial genome
real-time PCR
title Establishment of Real-Time PCR Method to Differentiate <i>Phlebotomus sichuanensis</i> (Diptera, Psychodidae) from <i>P. chinensis</i> s.s. Based on Whole Mitochondrial Genome Analysis
title_full Establishment of Real-Time PCR Method to Differentiate <i>Phlebotomus sichuanensis</i> (Diptera, Psychodidae) from <i>P. chinensis</i> s.s. Based on Whole Mitochondrial Genome Analysis
title_fullStr Establishment of Real-Time PCR Method to Differentiate <i>Phlebotomus sichuanensis</i> (Diptera, Psychodidae) from <i>P. chinensis</i> s.s. Based on Whole Mitochondrial Genome Analysis
title_full_unstemmed Establishment of Real-Time PCR Method to Differentiate <i>Phlebotomus sichuanensis</i> (Diptera, Psychodidae) from <i>P. chinensis</i> s.s. Based on Whole Mitochondrial Genome Analysis
title_short Establishment of Real-Time PCR Method to Differentiate <i>Phlebotomus sichuanensis</i> (Diptera, Psychodidae) from <i>P. chinensis</i> s.s. Based on Whole Mitochondrial Genome Analysis
title_sort establishment of real time pcr method to differentiate i phlebotomus sichuanensis i diptera psychodidae from i p chinensis i s s based on whole mitochondrial genome analysis
topic <i>Phlebotomus</i>
classification
mitochondrial genome
real-time PCR
url https://www.mdpi.com/2075-1729/14/12/1610
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