Detection of Putative Mutation I873S in the Sodium Channel of <i>Megalurothrips usitatus</i> (Bagnall) Which May Be Associated with Pyrethroid Resistance

Pyrethroid resistance of thrips has been reported in many countries, and knockdown resistance (<i>kdr</i>) has been identified as a main mechanism against pyrethroids in many insects. To characterize pyrethroid resistance in <i>Megalurothrips usitatus</i> from the Hainan Prov...

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Main Authors: Ruibo Gao, Rongcai Lu, Xinyao Qiu, Likui Wang, Kun Zhang, Shaoying Wu
Format: Article
Language:English
Published: MDPI AG 2023-04-01
Series:Insects
Subjects:
Online Access:https://www.mdpi.com/2075-4450/14/4/388
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author Ruibo Gao
Rongcai Lu
Xinyao Qiu
Likui Wang
Kun Zhang
Shaoying Wu
author_facet Ruibo Gao
Rongcai Lu
Xinyao Qiu
Likui Wang
Kun Zhang
Shaoying Wu
author_sort Ruibo Gao
collection DOAJ
description Pyrethroid resistance of thrips has been reported in many countries, and knockdown resistance (<i>kdr</i>) has been identified as a main mechanism against pyrethroids in many insects. To characterize pyrethroid resistance in <i>Megalurothrips usitatus</i> from the Hainan Province of China, we conducted a biological assay and sequenced the voltage-gated sodium channel gene domain II from <i>M. usitatus</i> field populations. It showed high resistance to the pyrethroids for 2019 and 2020, in which LC<sub>50</sub> to lambda-cyhalothrin of <i>M. usitatus</i> was 1683.521 mg/L from Sanya in 2020. The LC<sub>50</sub> value of deltamethrin was lower in Haikou than in other locations, which mean the south of Hainan has higher resistance than the north of Hainan. Two mutations of I873S and V1015M were detected in the domain II region of the sodium channel in <i>M. usitatus</i>; however, the mutation frequency of V1015M was only 3.33% and that of I873S was 100%. One is homozygous and the other is a heterozygous mutant type. The three thrips-sensitive strains of sodium channel 873 are highly conserved in amino acids (isoleucine), while the <i>M. usitatus</i> pyrethroid-resistant strains are all serine, so I873S may be related to the resistance of <i>M. usitatus</i> to pyrethroids. The present study will contribute to the understanding of the evolution of pyrethroids resistance and contribute to the development of resistance management of <i>M. usitatus</i> in Hainan.
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spelling doaj.art-7b3ca9f5f767458891f0094384064d872023-11-17T19:46:51ZengMDPI AGInsects2075-44502023-04-0114438810.3390/insects14040388Detection of Putative Mutation I873S in the Sodium Channel of <i>Megalurothrips usitatus</i> (Bagnall) Which May Be Associated with Pyrethroid ResistanceRuibo Gao0Rongcai Lu1Xinyao Qiu2Likui Wang3Kun Zhang4Shaoying Wu5Sanya Nanfan Research Institute, Hainan University, Yazhou, Sanya 572024, ChinaSanya Nanfan Research Institute, Hainan University, Yazhou, Sanya 572024, ChinaSanya Nanfan Research Institute, Hainan University, Yazhou, Sanya 572024, ChinaSanya Nanfan Research Institute, Hainan University, Yazhou, Sanya 572024, ChinaSanya Nanfan Research Institute, Hainan University, Yazhou, Sanya 572024, ChinaSanya Nanfan Research Institute, Hainan University, Yazhou, Sanya 572024, ChinaPyrethroid resistance of thrips has been reported in many countries, and knockdown resistance (<i>kdr</i>) has been identified as a main mechanism against pyrethroids in many insects. To characterize pyrethroid resistance in <i>Megalurothrips usitatus</i> from the Hainan Province of China, we conducted a biological assay and sequenced the voltage-gated sodium channel gene domain II from <i>M. usitatus</i> field populations. It showed high resistance to the pyrethroids for 2019 and 2020, in which LC<sub>50</sub> to lambda-cyhalothrin of <i>M. usitatus</i> was 1683.521 mg/L from Sanya in 2020. The LC<sub>50</sub> value of deltamethrin was lower in Haikou than in other locations, which mean the south of Hainan has higher resistance than the north of Hainan. Two mutations of I873S and V1015M were detected in the domain II region of the sodium channel in <i>M. usitatus</i>; however, the mutation frequency of V1015M was only 3.33% and that of I873S was 100%. One is homozygous and the other is a heterozygous mutant type. The three thrips-sensitive strains of sodium channel 873 are highly conserved in amino acids (isoleucine), while the <i>M. usitatus</i> pyrethroid-resistant strains are all serine, so I873S may be related to the resistance of <i>M. usitatus</i> to pyrethroids. The present study will contribute to the understanding of the evolution of pyrethroids resistance and contribute to the development of resistance management of <i>M. usitatus</i> in Hainan.https://www.mdpi.com/2075-4450/14/4/388<i>Megalurothrips usitatus</i>pyrethroidsresistance mutationvoltage-gated sodium channel
spellingShingle Ruibo Gao
Rongcai Lu
Xinyao Qiu
Likui Wang
Kun Zhang
Shaoying Wu
Detection of Putative Mutation I873S in the Sodium Channel of <i>Megalurothrips usitatus</i> (Bagnall) Which May Be Associated with Pyrethroid Resistance
Insects
<i>Megalurothrips usitatus</i>
pyrethroids
resistance mutation
voltage-gated sodium channel
title Detection of Putative Mutation I873S in the Sodium Channel of <i>Megalurothrips usitatus</i> (Bagnall) Which May Be Associated with Pyrethroid Resistance
title_full Detection of Putative Mutation I873S in the Sodium Channel of <i>Megalurothrips usitatus</i> (Bagnall) Which May Be Associated with Pyrethroid Resistance
title_fullStr Detection of Putative Mutation I873S in the Sodium Channel of <i>Megalurothrips usitatus</i> (Bagnall) Which May Be Associated with Pyrethroid Resistance
title_full_unstemmed Detection of Putative Mutation I873S in the Sodium Channel of <i>Megalurothrips usitatus</i> (Bagnall) Which May Be Associated with Pyrethroid Resistance
title_short Detection of Putative Mutation I873S in the Sodium Channel of <i>Megalurothrips usitatus</i> (Bagnall) Which May Be Associated with Pyrethroid Resistance
title_sort detection of putative mutation i873s in the sodium channel of i megalurothrips usitatus i bagnall which may be associated with pyrethroid resistance
topic <i>Megalurothrips usitatus</i>
pyrethroids
resistance mutation
voltage-gated sodium channel
url https://www.mdpi.com/2075-4450/14/4/388
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