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Wu J, Yuan L, Jin H, Zhang K, Li F, Wu S. Double sodium channel mutation, I265T/L1014F, is possibly related to pyrethroid-resistant in Thrips palmi. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2023:e22021. [PMID: 37158115 DOI: 10.1002/arch.22021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2023] [Revised: 04/05/2023] [Accepted: 04/07/2023] [Indexed: 05/10/2023]
Abstract
Thrips palmi Karny (Thysanoptera: Thripidae) can harm a variety of agricultural crops and transmit plant viruses, causing heavy economic losses. In the Hainan province of China, pyrethroids were sprayed widely to control T. palmi, which leaded to resistance to pyrethroids in T. palmi. The bioassay has shown that the resistance ratio of T. palmi to pyrethroids increases annually. Resistance ratio to λ-cyhalothrin has increased from 10.711 to 23.321 and to cypermethrin has increased from 5.507 to 23.051 for 3 years, 2020-2022. The double mutation (I265T/L1014F) was identified from the field strain for the first time, which were located in the domains I and II of the voltage-gated sodium channel of T. palmi, respectively. The double mutation is probably the reason for the higher resistance of T. palmi in Hainan. The frequencies of the double mutation were 53.33% in HN2020, 70.00% in HN2021, and 96.67% in HN2022. Results indicated that T. palmi had developed different degrees of resistance to pyrethroids in Hainan. This study provides theoretical guidance for the use of insecticides in the field control of thrips.
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Affiliation(s)
- Jiantao Wu
- Sanya Nanfan Research Institute, Hainan University, Sanya, China
- School of Tropical Crops, Hainan University, Haikou, China
- School of Plant Protection, Hainan University, Haikou, China
| | - Linlin Yuan
- Sanya Nanfan Research Institute, Hainan University, Sanya, China
- School of Tropical Crops, Hainan University, Haikou, China
- School of Plant Protection, Hainan University, Haikou, China
| | - Haifeng Jin
- Sanya Nanfan Research Institute, Hainan University, Sanya, China
- School of Plant Protection, Hainan University, Haikou, China
| | - Kun Zhang
- Sanya Nanfan Research Institute, Hainan University, Sanya, China
- School of Plant Protection, Hainan University, Haikou, China
| | - Fen Li
- Sanya Nanfan Research Institute, Hainan University, Sanya, China
- School of Plant Protection, Hainan University, Haikou, China
| | - Shaoying Wu
- Sanya Nanfan Research Institute, Hainan University, Sanya, China
- School of Plant Protection, Hainan University, Haikou, China
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Gao R, Lu R, Qiu X, Wang L, Zhang K, Wu S. Detection of Putative Mutation I873S in the Sodium Channel of Megalurothrips usitatus (Bagnall) Which May Be Associated with Pyrethroid Resistance. INSECTS 2023; 14:388. [PMID: 37103203 PMCID: PMC10143160 DOI: 10.3390/insects14040388] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 04/14/2023] [Accepted: 04/15/2023] [Indexed: 06/19/2023]
Abstract
Pyrethroid resistance of thrips has been reported in many countries, and knockdown resistance (kdr) has been identified as a main mechanism against pyrethroids in many insects. To characterize pyrethroid resistance in Megalurothrips usitatus from the Hainan Province of China, we conducted a biological assay and sequenced the voltage-gated sodium channel gene domain II from M. usitatus field populations. It showed high resistance to the pyrethroids for 2019 and 2020, in which LC50 to lambda-cyhalothrin of M. usitatus was 1683.521 mg/L from Sanya in 2020. The LC50 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 M. usitatus; 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 M. usitatus pyrethroid-resistant strains are all serine, so I873S may be related to the resistance of M. usitatus 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 M. usitatus in Hainan.
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Affiliation(s)
- Ruibo Gao
- Sanya Nanfan Research Institute, Hainan University, Yazhou, Sanya 572024, China; (R.G.); (R.L.); (X.Q.); (L.W.)
- College of Plant Protection, Hainan University, Haikou 570228, China
- Yazhou Bay Science and Technology City, Yazhou, Sanya 572024, China
| | - Rongcai Lu
- Sanya Nanfan Research Institute, Hainan University, Yazhou, Sanya 572024, China; (R.G.); (R.L.); (X.Q.); (L.W.)
- College of Plant Protection, Hainan University, Haikou 570228, China
- Yazhou Bay Science and Technology City, Yazhou, Sanya 572024, China
| | - Xinyao Qiu
- Sanya Nanfan Research Institute, Hainan University, Yazhou, Sanya 572024, China; (R.G.); (R.L.); (X.Q.); (L.W.)
- College of Plant Protection, Hainan University, Haikou 570228, China
- Yazhou Bay Science and Technology City, Yazhou, Sanya 572024, China
| | - Likui Wang
- Sanya Nanfan Research Institute, Hainan University, Yazhou, Sanya 572024, China; (R.G.); (R.L.); (X.Q.); (L.W.)
- College of Plant Protection, Hainan University, Haikou 570228, China
- Yazhou Bay Science and Technology City, Yazhou, Sanya 572024, China
| | - Kun Zhang
- Sanya Nanfan Research Institute, Hainan University, Yazhou, Sanya 572024, China; (R.G.); (R.L.); (X.Q.); (L.W.)
- College of Plant Protection, Hainan University, Haikou 570228, China
- Yazhou Bay Science and Technology City, Yazhou, Sanya 572024, China
| | - Shaoying Wu
- Sanya Nanfan Research Institute, Hainan University, Yazhou, Sanya 572024, China; (R.G.); (R.L.); (X.Q.); (L.W.)
- College of Plant Protection, Hainan University, Haikou 570228, China
- Yazhou Bay Science and Technology City, Yazhou, Sanya 572024, China
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Mavridis K, Ilias A, Papapostolou KM, Varikou K, Michaelidou K, Tsagkarakou A, Vontas J. Molecular diagnostics for monitoring insecticide resistance in the western flower thrips Frankliniella occidentalis. PEST MANAGEMENT SCIENCE 2023; 79:1615-1622. [PMID: 36562265 DOI: 10.1002/ps.7336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/16/2022] [Accepted: 12/23/2022] [Indexed: 06/17/2023]
Abstract
BACKGROUND Insecticide resistance has emerged in various western flower thrips (WFT) populations across the world, threatening the efficiency of chemical control applications. Elucidation of insecticide resistance mechanisms at the molecular level provides markers for the development of diagnostics to monitor the trait and support evidence-based resistance management. RESULTS TaqMan and Droplet Digital polymerase chain reaction (ddPCR) diagnostics were developed and validated, against Sanger sequencing, in individual and pooled WFT samples respectively, for the G275E mutation (nicotinic acetylcholine receptor α6 gene, nAChR α6) associated with resistance to nAChR allosteric modulators, site I (spinosyns); L1014F, T929I, T929C and T292V mutations (voltage-gated sodium channel gene, vgsc) linked with pyrethroid resistance; and I1017M (chitin synthase 1 gene, chs1) conferring resistance to growth inhibitors affecting CHS1 (benzoylureas). The detection limits of ddPCR assays for mutant allelic frequencies (MAF) were in the range of 0.1%-0.2%. The assays were applied in nine WFT field populations from Crete, Greece. The G275E (MAF = 29.66%-100.0%), T929I and T929V (combined MAF = 100%), L1014F (MAF = 11.01%-37.29%), and I1017M (MAF = 17.74%-51.07%) mutations were present in all populations. CONCLUSION The molecular diagnostics panel that was developed in this study can facilitate the quick and sensitive resistance monitoring of WFT populations at the molecular level, to support evidence-based insecticide resistance management strategies. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Konstantinos Mavridis
- Foundation for Research and Technology-Hellas, Institute of Molecular Biology and Biotechnology, Heraklion, Greece
| | - Aris Ilias
- Foundation for Research and Technology-Hellas, Institute of Molecular Biology and Biotechnology, Heraklion, Greece
- Hellenic Agricultural Organization "DIMITRA", Institute of Olive Tree, Subtropical Crops and Viticulture, Heraklion, Greece
| | - Kyriaki Maria Papapostolou
- Foundation for Research and Technology-Hellas, Institute of Molecular Biology and Biotechnology, Heraklion, Greece
| | - Kyriaki Varikou
- Hellenic Agricultural Organization "DIMITRA", Institute of Olive Tree, Subtropical Crops and Viticulture, Heraklion, Greece
| | - Kleita Michaelidou
- Laboratory of Translational Oncology, School of Medicine, University of Crete, Heraklion, Greece
| | - Anastasia Tsagkarakou
- Hellenic Agricultural Organization "DIMITRA", Institute of Olive Tree, Subtropical Crops and Viticulture, Heraklion, Greece
| | - John Vontas
- Foundation for Research and Technology-Hellas, Institute of Molecular Biology and Biotechnology, Heraklion, Greece
- Pesticide Science Laboratory, Department of Crop Science, Agricultural University of Athens, Athens, Greece
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