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Pudasaini R, Chang C, Chen MH, Dai SM. The I4790K mutation of the ryanodine receptor is responsible for anthranilic diamide resistance in field populations of Plutella xylostella (Lepidoptera: Plutellidae). JOURNAL OF ECONOMIC ENTOMOLOGY 2024:toae189. [PMID: 39255412 DOI: 10.1093/jee/toae189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 07/21/2024] [Accepted: 08/02/2024] [Indexed: 09/12/2024]
Abstract
Insecticide resistance in Plutella xylostella (Linnaeus) (Lepidoptera: Plutellidae) is a major constraint on the global production of cruciferous crops. For effective management of insecticide resistance, it is necessary to develop a molecular detection tool for predicting insecticide resistance levels based on the mutation frequency of target sites. In this study, a susceptible strain (SHggt) of P. xylostella was subjected to chlorantraniliprole and tetraniliprole selection under laboratory conditions to obtain the CHLSel and TETSel strains, respectively, to determine their resistance development, cross-resistance and mutation frequencies of the P. xylostella ryanodine receptor (PxRyR). In addition, the tetraniliprole resistance and the mutation frequencies of the PxRyR from 7 field populations were evaluated. Continuous selection over 30 generations resulted in resistance ratios (RRs) of 7,073.2-fold and 6,971.0-fold for the CHLSel and TETSel strains, respectively, and thousandfold increases in cross-resistance to unexposed diamides, e.g., cyantraniliprole and flubendiamide, were observed. For the field populations, three out of seven populations have developed more than thousandfold resistance to tetraniliprole. Among the three investigated target site mutations in PxRyR, only I4790K was detected in both laboratory-selected strains. However, 2 mutations, I4790K and G4946E, were detected in field populations. A positive correlation between RRs and K allele frequencies was observed in the laboratory-selected/relaxed strains and field populations of P. xylostella. These results suggest a possible link between the development of anthranilic diamide resistance and the frequency of the PxRyR I4790K mutation, which can be used to develop effective strategies for diamide resistance management in P. xylostella.
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Affiliation(s)
- Rameshwor Pudasaini
- Department of Entomology, National Chung Hsing University, 145 Xing Da Road, Taichung 402204, Taiwan, ROC
- Institute of Agriculture and Animal Science, Tribhuvan University, Kathmandu, Nepal
| | - Cheng Chang
- Biotechnology Center, National Chung-Hsing University, Taichung, Taiwan, ROC
| | - Mu-Hsin Chen
- Department of Entomology, National Chung Hsing University, 145 Xing Da Road, Taichung 402204, Taiwan, ROC
| | - Shu-Mei Dai
- Department of Entomology, National Chung Hsing University, 145 Xing Da Road, Taichung 402204, Taiwan, ROC
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Chang CC, Dai SM, Chen CY, Huang LH, Chen YH, Hsu JC. Insecticide resistance and characteristics of mutations related to target site insensitivity of diamondback moths in Taiwan. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2024; 203:106001. [PMID: 39084797 DOI: 10.1016/j.pestbp.2024.106001] [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: 05/09/2024] [Revised: 06/20/2024] [Accepted: 06/25/2024] [Indexed: 08/02/2024]
Abstract
Diamondback moth (DBM, Plutella xylostella) is the most significant pest of cruciferous vegetables as they rapidly develop high-level resistance to many insecticides. Monitoring DBM susceptibility and target-site mutation frequency is essential for pest control. In this study, 10 insecticides were tested on 11 field populations. Frequencies of target-site mutations (including para, ace1, Rdl1, RyR1, and nAChRα6 genes) were estimated by pyrosequencing. Insecticides registered after 2007 for DBM control in Taiwan, i.e., spinetoram, chlorantraniliprole, chlorfenapyr, metaflumizone, and flubendiamide, showed >80% mortality toward several populations; Bacillus thurigiensis, emamectin benzoate, and chlorfluazuron showed medium to low efficacy in all populations; and tolfenpyrad and mevinphos were highly ineffective. Susceptibility to insecticides varied substantially among populations: eight out of nine populations were highly susceptible to spinetoram, but only one was susceptible to flubendiamide. Target-site mutations related to organophosphates, pyrethroids, fipronil, and diamides were detected in all populations, but there were few spinosad and spinetoram mutations. Our three-year field study demonstrated rapid efficacy loss for all insecticides tested, particularly for more toxic insecticides. Skipped-generation selection of a field DBM strain to emamectin benzoate, metaflumizone, chlorantraniliprole, and flubendiamide revealed that mortality rates dropped from 60 to 80% to <10% after 6 generations. Next-generation sequencing was performed to identify possible target gene mutations. A resistance management program that considers the instability of resistance to some chemicals and pertinent data on resistance mechanisms should be established. Identifying compounds to overcome high-frequency field DBM point mutations could be beneficial for pest control.
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Affiliation(s)
- Chia-Che Chang
- Master (M.S.) Program for Plant Medicine, National Taiwan University, Taipei City 10617, Taiwan
| | - Shu-Mei Dai
- Department of Entomology, National Chung Hsing University, No. 145 Xingda Rd., South Dist., Taichung City 40227, Taiwan
| | - Chien-Yu Chen
- Department of Biomechatronics Engineering, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd., Taipei 10617, Taiwan
| | - Li-Hsin Huang
- Pesticide Application Division, Agricultural Chemicals Research Institute, Ministry of Agriculture, Taichung City 41358, Taiwan
| | - Yu-Hsien Chen
- Department of Entomology, National Taiwan University, No.1, Sec. 4, Roosevelt Rd., Taipei City 10617, Taiwan
| | - Ju-Chun Hsu
- Master (M.S.) Program for Plant Medicine, National Taiwan University, Taipei City 10617, Taiwan; Department of Entomology, National Taiwan University, No.1, Sec. 4, Roosevelt Rd., Taipei City 10617, Taiwan.
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Pudasaini R, Chou MY, Wu TJ, Dai SM. Insecticide Resistance and Control Failure Likelihood Analysis in Plutella xylostella (Lepidoptera: Plutellidae) Populations From Taiwan. JOURNAL OF ECONOMIC ENTOMOLOGY 2022; 115:835-843. [PMID: 35482582 DOI: 10.1093/jee/toac048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Indexed: 06/14/2023]
Abstract
The status of insecticide resistance levels is important for applying suitable pest management approaches. The present study investigated the insecticide resistance of Plutella xylostella (Linnaeus) (Lepidoptera: Plutellidae) populations from five major cruciferous growing areas in Taiwan. The surveyed locations were distributed from central to southern Taiwan and included Taichung, Changhua, Yunlin, Chiayi, and Kaohsiung. High levels of resistance to spinosad, indoxacarb, metaflumizone, and chlorantraniliprole were recorded among the surveyed populations except in Taichung. The resistance ratios ranged from 2.376 to 1,236-fold for spinosad and 24.63-1,511-fold for indoxacarb. Similarly, those for metaflumizone and chlorantraniliprole, were 2.563-76.21- and 4.457-683.0-fold, respectively. However, Bacillus thuringiensis subsp. aizawai, Bacillus thuringiensis subsp. kurstaki, emamectin benzoate, and diafenthiuron were still relatively effective against most field populations of P. xylostella. After approximately 10 generations of being maintained in the laboratory without exposure to insecticides, the resistance ratios of the Kaohsiung and Changhua populations declined to approximately 1.4-10-fold, and insecticides with control failure likelihood also began to show a negligible risk of control failure. Although spinosad, indoxacarb, metaflumizone, and chlorantraniliprole have lost their effectiveness in most field populations of P. xylostella in Taiwan, their effectiveness may be recovered in the absence of insecticide-selection pressure for approximately 10 generations. Therefore, we suggest that a constant survey of insecticide resistance and well-designed insecticide rotation based on the survey results are necessary for the effective control and insecticide resistance management of P. xylostella.
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Affiliation(s)
- Rameshwor Pudasaini
- Department of Entomology, National Chung Hsing University, 145 Xing Da Road, Taichung, 402204, Taiwan, ROC
- Institute of Agriculture and Animal Science, Tribhuvan University, Kathmandu, Nepal
| | - Ming-Yi Chou
- Agricultural Extension Center, National Chung Hsing University, 145 Xing Da Road, Taichung, 402204, Taiwan, ROC
| | - Tsung-Jung Wu
- Department of Entomology, National Chung Hsing University, 145 Xing Da Road, Taichung, 402204, Taiwan, ROC
| | - Shu-Mei Dai
- Department of Entomology, National Chung Hsing University, 145 Xing Da Road, Taichung, 402204, Taiwan, ROC
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Sindhu T, Venkatesan T, Prabhu D, Jeyakanthan J, Gracy GR, Jalali SK, Rai A. Insecticide-resistance mechanism of Plutella xylostella (L.) associated with amino acid substitutions in acetylcholinesterase-1: A molecular docking and molecular dynamics investigation. Comput Biol Chem 2018; 77:240-250. [DOI: 10.1016/j.compbiolchem.2018.09.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 08/01/2018] [Accepted: 09/03/2018] [Indexed: 01/22/2023]
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Agusti-Ridaura C, Dondrup M, Horsberg TE, Leong JS, Koop BF, Bravo S, Mendoza J, Kaur K. Caligus rogercresseyi acetylcholinesterase types and variants: a potential marker for organophosphate resistance. Parasit Vectors 2018; 11:570. [PMID: 30376873 PMCID: PMC6208076 DOI: 10.1186/s13071-018-3151-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 10/14/2018] [Indexed: 12/17/2022] Open
Abstract
Background Control of the sea louse Caligus rogercresseyi in the Chilean salmonid industry is reliant on chemical treatments. Azamethiphos was introduced in 2013, although other organophosphates were previously used. In 2014, reduced sensitivity to azamethiphos was detected in the Los Lagos Region using bioassays. The main target of organophosphates is the enzyme acetylcholinesterase (AChE). Mutations in the AChE gene are the main cause of organophosphate resistance in arthropods, including other sea lice. In the present study, we aimed to characterize C. rogercresseyi AChE(s) gene(s) and to study the association between AChE variants and azamethiphos resistance in this sea louse species. Methods Samples of adult male and female C. rogercresseyi were collected in the Los Lagos Region in 2014. Twenty-four hour exposure bioassays with azamethiphos were performed to select sensitive and resistant lice. The full-length cDNA coding sequences encoding for two AChEs in C. rogercresseyi were molecularly characterized. One of the AChE genes was screened by direct sequencing in the azamethiphos-selected lice to search for variants. An additional louse sampling was performed before and after an azamethiphos treatment in the field in 2017 to validate the findings. Results The molecular analysis revealed two putative AChEs in C. rogercresseyi. In silico analysis and 3D modelling of the protein sequences identified both of them as invertebrate AChE type 1; they were named C. rogercresseyi AChE1a and 1b. AChE1a had the characteristics of the main synaptic AChE, while AChE1b lacked some of the important amino acids of a typical AChE. A missense change found in the main synaptic AChE (1a), F318F/V (F290 in Torpedo californica), was associated with survival of C. rogercresseyi at high azamethiphos concentrations (bioassays and field treatment). The amino acid change was located in the acyl pocket of the active-site gorge of the protein. Conclusions The present study demonstrates the presence of two types of AChE1 genes in C. rogercresseyi. Although enzymatic assays are needed, AChE1a is most probably the main synaptic AChE. The function of AChE1b is unknown, but evidence points to a scavenger role. The AChE1a F/V318 variant is most probably involved in organophosphate resistance, and can be a good marker for resistance monitoring. Electronic supplementary material The online version of this article (10.1186/s13071-018-3151-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Celia Agusti-Ridaura
- Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Sea Lice Research Centre, Postboks 369 Sentrum, Oslo, NO-0102, Norway.
| | - Michael Dondrup
- Department of Informatics, University of Bergen, Sea Lice Research Centre, Thormøhlensgate 55, N-5008, Bergen, Norway
| | - Tor E Horsberg
- Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Sea Lice Research Centre, Postboks 369 Sentrum, Oslo, NO-0102, Norway
| | - Jong S Leong
- Biology Department, Centre for Biomedical Research, University of Victoria, Station CSC, PO Box 1700, Victoria, BC, V8W 2Y2, Canada
| | - Ben F Koop
- Biology Department, Centre for Biomedical Research, University of Victoria, Station CSC, PO Box 1700, Victoria, BC, V8W 2Y2, Canada
| | - Sandra Bravo
- Universidad Austral de Chile, Casilla 1327, Puerto Montt, Chile
| | - Julio Mendoza
- Cermaq Chile, Diego Portales 2000, Puerto Montt, Chile
| | - Kiranpreet Kaur
- Faculty of Veterinary Medicine, Norwegian University of Life Sciences, Sea Lice Research Centre, Postboks 369 Sentrum, Oslo, NO-0102, Norway
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Dai SM, Chang C, Huang XY. Distinct contributions of A314S and novel R667Q substitutions of acetylcholinesterase 1 to carbofuran resistance of Chilo suppressalis Walker. PEST MANAGEMENT SCIENCE 2016; 72:1421-1426. [PMID: 26446949 DOI: 10.1002/ps.4169] [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: 03/30/2015] [Revised: 09/28/2015] [Accepted: 10/05/2015] [Indexed: 06/05/2023]
Abstract
BACKGROUND In the striped stem borer, Chilo suppressalis, A314S, R667Q and H669P substitutions in acetylcholinesterase 1 (CsAChE1) have been associated with >1000-fold resistance against carbofuran. In this study, eight variants of CsAChE1 carrying different combinations of these substitutions were cloned and expressed using the Bac-to-Bac expression system to verify their contributions. RESULTS The expressed AChE1s had molecular weights of ca 160 kDa per dimer and 80 kDa per monomer. AChE kinetics and inhibition analysis showed that the A314S mutation was the key substitution responsible for a 15.1-fold decrease in hydrolytic activity to acetylthiocholine iodide and a 10.6-fold increase in carbofuran insensitivity of CsAChE. Compared with wild-type CsAChE1, this substituted CsAChE1 also showed 23.0-, 3.3- and 2.6-fold insensitivity to methomyl, triazophos and chlorpyrifos-oxon respectively. It should be noted that the R667Q substitution conferred a capability to increase the activity of wild-type and A314S-substituted CsAChE, while the A314S substitution reduced Km and compensated for overall catalytic efficiency. CONCLUSION With the enhancing activity of the R667Q substitution, A314S is the major CsAChE1 substitution responsible for fitness-cost compensation and increased insensitivity to AChE inhibitors. The lower insensitivity of A314S-substituted CsAChE1 to chlorpyrifos-oxon suggests that chlorpyrifos could be an alternative insecticide for managing carbofuran-resistant field C. suppressalis in Taiwan. © 2015 Society of Chemical Industry.
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Affiliation(s)
- Shu-Mei Dai
- Department of Entomology, National Chung-Hsing University, Taichung, Taiwan, R.O.C
| | - Cheng Chang
- Biotechnology Centre, National Chung-Hsing University, Taichung, Taiwan, R.O.C
| | - Xin-Yi Huang
- Department of Entomology, National Chung-Hsing University, Taichung, Taiwan, R.O.C
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Hsu JC, Lin YY, Chang CC, Hua KH, Chen MJM, Huang LH, Chen CY. Discovery of Organophosphate Resistance-Related Genes Associated With Well-known Resistance Mechanisms of Plutella xylostella (L.) (Lepidoptera: Plutellidae) by RNA-Seq. JOURNAL OF ECONOMIC ENTOMOLOGY 2016; 109:1378-1386. [PMID: 27106222 DOI: 10.1093/jee/tow070] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 03/14/2016] [Indexed: 06/05/2023]
Abstract
Pesticide resistance poses many challenges for pest control, particularly for destructive pests such as diamondback moths ( Plutella xylostella ). Organophosphates have been used in the field since the 1950s, leading to selection for resistance-related gene variants and the development of resistance to new insecticides in the diamondback moth. Identifying actual and potential genes involved in resistance could offer solutions for control. This study established resistant diamondback moth strains from two different collections using mevinphos. Two sets of transcriptome sequencing (RNA-Seq) data were generated for pairs of mevinphos-resistant versus susceptible (wild-type) strains. One susceptible strain containing 14 giga base pairs was assembled into a reference-based assembly using published scaffold sequences as reference. Differential expression data between resistant and susceptible strains revealed 944 transcripts (803 with annotations) showing upregulation and 427 transcripts (150 with annotations) showing downregulation. Around 6.8% of the differential expression transcripts (65) could be categorized as associated with well-known resistance mechanisms such as penetration, detoxification, and behavior response; of these 65 transcripts, 38 showed upregulation, and 12 relating to penetration were upregulated when the transcripts of 19 cytochrome P450s, 2 zeta-class glutathione S-transferases, and 4 ATP-binding cassette transporters showed upregulation. In addition, 11 groups of transcripts related to olfactory perception appeared to be downregulated in trade-off situations. Quantitative polymerase chain reaction expression results were consistent with RNA-Seq data. Possible roles of these differentially expressed genes in resistance mechanisms are discussed in this study.
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Zhang LJ, Jing YP, Li XH, Li CW, Bourguet D, Wu G. Temperature-sensitive fitness cost of insecticide resistance in Chinese populations of the diamondback mothPlutella xylostella. Mol Ecol 2015; 24:1611-27. [DOI: 10.1111/mec.13133] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Revised: 02/25/2015] [Accepted: 02/26/2015] [Indexed: 11/29/2022]
Affiliation(s)
- Lin Jie Zhang
- Key Laboratory of Biopesticide and Chemical Biology (Ministry of Education); Fujian Agriculture and Forestry University; Fuzhou 350002 China
| | - Yu Pu Jing
- Key Laboratory of Biopesticide and Chemical Biology (Ministry of Education); Fujian Agriculture and Forestry University; Fuzhou 350002 China
| | - Xiao Hui Li
- Key Laboratory of Biopesticide and Chemical Biology (Ministry of Education); Fujian Agriculture and Forestry University; Fuzhou 350002 China
| | - Chang Wei Li
- Key Laboratory of Biopesticide and Chemical Biology (Ministry of Education); Fujian Agriculture and Forestry University; Fuzhou 350002 China
| | - Denis Bourguet
- Centre de Biologie pour la Gestion des Populations (CBGP); UMR Inra-IRD-Cirad-Montpellier SupAgro; Montpellier France
| | - Gang Wu
- Key Laboratory of Biopesticide and Chemical Biology (Ministry of Education); Fujian Agriculture and Forestry University; Fuzhou 350002 China
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