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Qian C, Li J, Wu S, Yang Y, Wu Y, Wang X. Cross-resistance and genetics of field-evolved resistance to chlorfenapyr in Plutella xylostella. INSECT SCIENCE 2024; 31:533-541. [PMID: 37455336 DOI: 10.1111/1744-7917.13249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Revised: 06/07/2023] [Accepted: 06/09/2023] [Indexed: 07/18/2023]
Abstract
Chlorfenapyr is a broad-spectrum halogenated pyrrole insecticide with a unique mode of action. Due to the misuse and overuse of this chemical, resistance has been reported in several arthropods, including Plutella xylostella, which is one of the most destructive insect pests afflicting crucifers worldwide. A better understanding of the cross-resistance and genetics of field-evolved chlorfenapyr resistance could effectively guide resistance management practices. Here, the chlorfenapyr resistance of a field-derived population of P. xylostella was introgressed into the susceptible IPP-S strain using a selection-assisted multigenerational backcrossing approach. The constructed near-isogenic strain, TH-BC5F2, shared 98.4% genetic background with the recurrent parent IPP-S strain. The TH-BC5F2 strain showed 275-fold resistance to chlorfenapyr, but no significant cross-resistance to spinosad, abamectin, chlorpyrifos, β-cypermethrin, indoxacarb, chlorantraniliprole, or broflanilide (no more than 4.2-fold). Genetic analysis revealed that resistance was autosomal, incompletely dominant, and conferred by 1 major gene or a few tightly linked loci. The synergism of metabolic inhibitors (PBO, DEM, and DEF) to chlorfenapyr was very weak (<1.7-fold), and the metabolic enzyme activities in the TH-BC5F2 strain were not significantly elevated compared with the IPP-S strain. The results enhances our understanding of the genetic traits of chlorfenapyr resistance, and provides essential information for improving resistance management strategies.
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Affiliation(s)
- Cheng Qian
- Sanya Institute of Nanjing Agricultural University, Sanya, Hainan, China
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Jialin Li
- Sanya Institute of Nanjing Agricultural University, Sanya, Hainan, China
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Shuwen Wu
- Sanya Institute of Nanjing Agricultural University, Sanya, Hainan, China
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Yihua Yang
- Sanya Institute of Nanjing Agricultural University, Sanya, Hainan, China
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Yidong Wu
- Sanya Institute of Nanjing Agricultural University, Sanya, Hainan, China
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Xingliang Wang
- Sanya Institute of Nanjing Agricultural University, Sanya, Hainan, China
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
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Li Z, Wang X, Guo L, Yin T, Liu D, Liu S, You X, Xia X. Risk of resistance and the metabolic resistance mechanism of Laodelphax striatellus (Fallén) to cyantraniliprole. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 197:105685. [PMID: 38072542 DOI: 10.1016/j.pestbp.2023.105685] [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: 08/30/2023] [Revised: 11/03/2023] [Accepted: 11/03/2023] [Indexed: 12/18/2023]
Abstract
Cyantraniliprole is a highly effective diamide insecticide used to control of Laodelphax striatellus (Fallén). This study aimed to assess the insecticide resistance risk of L. striatellus and its metabolic resistance mechanisms. After 25 continuous generations of selection, the resistance of L. striatellus to cyantraniliprole increased by 17.14-fold. The realistic heritability of resistance was 0.0751. After successive rearing for five generations without exposure to insecticides, the resistance ratio for the resistant strain of L. striatellus decreased by 3.47-fold, and the average resistance decline rate per generation was 0.0266. Cyantraniliprole-resistant strains did not exhibit cross-resistance to triflumezopyrim, pymetrozine, flonicamid, sulfoxaflor, dinotefuran, clothianidin, thiamethoxam, nitenpyram, or imidacloprid. Compared to those of the sensitive strain, the 2nd, 3rd, and 4th instars, nymphal stage durations, total preoviposition period, and average generation time of the resistant strain were markedly reduced. Furthermore, the activity of cytochrome P450 monooxygenase (P450) and carboxylesterase (CarE) were markedly increased. The upregulation of CYP419A1v2 expression was most evident among the P450 genes, with a 6.10-fold increase relative to that in the sensitive strain. The CarE gene LsCarE5 was significantly upregulated by 1.94-fold compared with that in the sensitive strain. With the continuous use of cyantraniliprole, L. striatellus may develop resistance to this insecticide. This resistance may be related to the increase in metabolic enzyme activities regulated by the overexpression of P450 and CarE genes.
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Affiliation(s)
- Zhaoge Li
- College of Plant Protection, Shandong Agricultural University, Tai'an 271018, PR China
| | - Xueting Wang
- College of Plant Protection, Shandong Agricultural University, Tai'an 271018, PR China
| | - Longzhi Guo
- College of Plant Protection, Shandong Agricultural University, Tai'an 271018, PR China
| | - Tao Yin
- College of Plant Protection, Shandong Agricultural University, Tai'an 271018, PR China
| | - Dongmei Liu
- College of Plant Protection, Shandong Agricultural University, Tai'an 271018, PR China
| | - Shuang Liu
- College of Plant Protection, Shandong Agricultural University, Tai'an 271018, PR China
| | - Xingmei You
- College of Plant Protection, Shandong Agricultural University, Tai'an 271018, PR China
| | - Xiaoming Xia
- College of Plant Protection, Shandong Agricultural University, Tai'an 271018, PR China.
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Shen XJ, Zhang YJ, Wang SY, Chen JC, Cao LJ, Gong YJ, Pang BS, Hoffmann AA, Wei SJ. A high-throughput KASP assay provides insights into the evolution of multiple resistant mutations in populations of the two-spotted spider mite Tetranychus urticae across China. PEST MANAGEMENT SCIENCE 2023; 79:1702-1712. [PMID: 36594581 DOI: 10.1002/ps.7344] [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: 09/18/2022] [Revised: 12/24/2022] [Accepted: 01/03/2023] [Indexed: 06/17/2023]
Abstract
BACKGROUND The two-spotted spider mite (TSSM), Tetranychus urticae (Acari: Tetranychidae), is a cosmopolitan phytophagous pest in agriculture and horticulture. It has developed resistance to many acaricides by target-site mutations. Understanding the status and evolution of resistant mutations in the field is essential for resistance management. Here, we applied a high-throughput Kompetitive allele-specific polymerase chain reaction (KASP) method for detecting six mutations conferring resistance to four acaricides of the TSSM. We genotyped 3274 female adults of TSSM from 43 populations collected across China in 2017, 2020, and 2021. RESULTS The KASP genotyping of 24 testing individuals showed 99% agreement with Sanger sequencing results. KASP assays showed that most populations had a high frequency of mutations conferring avermectin (G314D and G326E) and pyridaben (H92R) resistance. The frequency of mutation conferring bifenazate (A269V and G126S) and etoxazole (I1017F) resistance was relatively low. Multiple mutations were common in the TSSM, with 70.2% and 24.6% of individuals having 2-6 and 7-10 of 10 possible resistant alleles, respectively. No loci were linked in most populations among the six mutations, indicating the development of multiple resistance is mainly by independent selection. However, G314D and I1017F on the nuclear genome deviated from Hardy-Weinberg equilibrium in most populations, indicating significant selective pressure on TSSM populations by acaricides or fitness cost of the mutations in the absence of acaricide selection. CONCLUSION Our study revealed that the high frequency of TSSMs evolved multiple resistant mutations in population and individual levels by independent selection across China, alarming for managing multiple-acaricides resistance. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Xiu-Jing Shen
- Institute of Plant Protection and Institute of Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Yu-Jie Zhang
- Institute of Plant Protection and Institute of Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | | | - Jin-Cui Chen
- Institute of Plant Protection and Institute of Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Li-Jun Cao
- Institute of Plant Protection and Institute of Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Ya-Jun Gong
- Institute of Plant Protection and Institute of Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Bin-Shuang Pang
- Institute of Plant Protection and Institute of Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Ary Anthony Hoffmann
- Bio21 Institute, School of BioSciences, University of Melbourne, Parkville, Victoria, Australia
| | - Shu-Jun Wei
- Institute of Plant Protection and Institute of Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
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Brown DJ, Redak RA. Fitness Costs Associated With Insecticide Resistance in Populations of Homalodisca vitripennis Germar (Hemiptera: Cicadellidae). JOURNAL OF ECONOMIC ENTOMOLOGY 2023; 116:560-564. [PMID: 36708025 DOI: 10.1093/jee/toad009] [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: 09/05/2022] [Indexed: 05/30/2023]
Abstract
The glassy-winged sharpshooter, Homalodisca vitripennis (Germar) (Hemiptera: Cicadellidae), is an important vector of bacterial Xyllela diseases throughout the southern and southwestern portions of the United States. Strong insect control measures, such that population densities of the insect vector are significantly reduced, are often necessary to limit the spread of Xylella fastidiosa. Glassy-winged sharpshooter populations within the Central Valley of California have developed a high resistance to imidacloprid (resistance ratio greater than 3,200) and tolerance to pyrethroids (ratio of less than 10) due to frequent applications of these materials. The purpose of this study was to determine the potential effects of insecticide resistance upon a variety of sharpshooter life history parameters associated with reproductive fitness. Our results indicate that individuals from susceptible populations of glassy-winged sharpshooters exhibited significantly higher fecundity and longer adult lifespans than those from the resistant populations. Additionally, resistant individuals were on average slightly larger than susceptible individuals. These results provide a strong indication that resistance to neonicotinoids imposes a reproductive fitness cost in an insecticide-free environment.
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Affiliation(s)
- Dylan J Brown
- Department of Entomology, University of California, Riverside, CA 92521, USA
| | - Richard A Redak
- Department of Entomology, University of California, Riverside, CA 92521, USA
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Sun X, Hua W, Wang K, Song J, Zhu B, Gao X, Liang P. A novel V263I mutation in the glutamate-gated chloride channel of Plutella xylostella (L.) confers a high level of resistance to abamectin. Int J Biol Macromol 2023; 230:123389. [PMID: 36706876 DOI: 10.1016/j.ijbiomac.2023.123389] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 01/11/2023] [Accepted: 01/19/2023] [Indexed: 01/26/2023]
Abstract
The frequent and extensive use of insecticides leads to the evolution of insecticide resistance, which has become one of the constraints on global agricultural production. Avermectins are microbial-derived insecticides that target a wide number of insect pests, including the diamondback moth Plutella xylostella, an important global pest of brassicaceous vegetables. However, field populations of P. xylostella have evolved serious resistance to avermectins, including abamectin, thereby threatening the efficiency of these insecticides. In this study, a novel valine to isoleucine mutation (V263I) was identified in the glutamate-gated chloride channel (GluCl) of field P. xylostella populations, which showed different levels of resistance to abamectin. Electrophysiological analysis revealed that the V263I mutation significantly reduced the sensitivity of PxGluCl to abamectin by 6.9-fold. Genome-modified Drosophila melanogaster carrying the V263I mutation exhibited 27.1-fold resistance to abamectin. Then, a knockin strain (V263I-KI) of P. xylostella expressing the homozygous V263I mutation was successfully constructed using the CRISPR/Cas9. The V263I-KI had high resistance to abamectin (106.3-fold), but significantly reduced fecundity. In this study, the function of V263I mutation in PxGluCl was verified for the first time. These findings provide a more comprehensive understanding of abamectin resistance mechanisms and lay the foundation for providing a new molecular detection method for abamectin resistance monitoring.
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Affiliation(s)
- Xi Sun
- Department of Entomology, China Agricultural University, Beijing 100193, China
| | - Wenjuan Hua
- Department of Entomology, China Agricultural University, Beijing 100193, China
| | - Kunkun Wang
- Department of Entomology, China Agricultural University, Beijing 100193, China
| | - Jiajia Song
- Department of Entomology, China Agricultural University, Beijing 100193, China
| | - Bin Zhu
- Department of Entomology, China Agricultural University, Beijing 100193, China.
| | - Xiwu Gao
- Department of Entomology, China Agricultural University, Beijing 100193, China
| | - Pei Liang
- Department of Entomology, China Agricultural University, Beijing 100193, China.
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Pan D, Xia MH, Luo QJ, Liu XY, Li CZ, Yuan GR, Wang JJ, Dou W. Resistance of Panonychus citri (McGregor) (Acari: Tetranychidae) to pyridaben in China: monitoring and fitness costs. PEST MANAGEMENT SCIENCE 2023; 79:996-1004. [PMID: 36318043 DOI: 10.1002/ps.7270] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 10/18/2022] [Accepted: 11/01/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Panonychus citri is a major citrus pest worldwide. The short life cycle and high reproductive potential of P. citri, combined with heavy acaricide use, have led to high levels of resistance to acaricides, posing a threat to global resistance management programs. Here, resistance monitoring was established to determine the pyridaben resistance status of ten P. citri populations in China from 2014 to 2021 using a leaf-dipping assay. Four characterized strains-the susceptible strain (Lab_S), the resistant strain (Pyr_R), as well as the segregated resistant strain (Pyr_Rs) and the segregated susceptible strain (Pyr_Control) derived from the crossing of the Lab_S and Pyr_R strains, were used to evaluate the life-history characteristics using age-stage, two-sex life tables. RESULTS Most P. citri populations developed high resistance to pyridaben. Resistance levels exceeded 1000-fold in Yuxi, Anyue, Nanning, and Ganzhou populations compared with the Lab_S strain. Compared with Pyr_Control, two key fitness cost criteria, developmental period and fecundity, showed significant differences in Pyr_Rs under consistent conditions. The intrinsic rate of increase, net reproductive rate and gross reproductive rate were lower in the resistant strain compared with the Pyr_Control strain. The Pyr_Rs strain had a lower relative fitness of 0.934 compared with the Pyr_Control. Moreover, the life-history traits and population parameters of the Pyr_R strain also showed significant differences compared with the Lab_S strain. CONCLUSION The resistance levels to pyridaben varied greatly among the different P. citri populations and showed regional differences. Substantial fitness costs are associated with pyridaben resistance. This study provides potential implications for developing strategies for resistance management in P. citri. © 2022 Society of Chemical Industry.
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Affiliation(s)
- Deng Pan
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
| | - Meng-Hao Xia
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
| | - Qiu-Juan Luo
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
| | - Xun-Yan Liu
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
| | - Chuan-Zhen Li
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
| | - Guo-Rui Yuan
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
| | - Jin-Jun Wang
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
| | - Wei Dou
- Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China
- Academy of Agricultural Sciences, Southwest University, Chongqing, China
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Wang R, Gao B, Zhang Q, Zhang Z, Li Y, Yang Q, Zhang M, Li W, Luo C. Acylsugar protection of Nicotiana benthamiana confers mortality and transgenerational fitness costs in Spodoptera litura. FRONTIERS IN PLANT SCIENCE 2022; 13:993279. [PMID: 36119595 PMCID: PMC9478178 DOI: 10.3389/fpls.2022.993279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Accepted: 08/05/2022] [Indexed: 06/15/2023]
Abstract
Acylsugars are secondary metabolites that are produced in the trichomes of some solanaceous species and can help control several herbivorous insect pests. Previously, knockout mutations (asat2 mutants) were shown to significantly reduce the acylsugar content of Nicotiana benthamiana, and significantly improve the fitness of six generalist insect herbivores. The current study compared the significant mortality and fitness costs in Spodoptera litura conferred by acylsugar protection of N. benthamiana (wild-type plants) compared to S. litura strains reared in acylsugar-deficient plants with depleted acylsugar biosynthesis. Acylsugar protection prolonged the developmental duration and decreased viability in the larval stages. Further, the fecundity of females and the hatching rate of eggs significantly decreased under acylsugar protection. For F1 offspring, acylsugar protection still exerted significant negative effects on larval survival rate and fecundity per female. The net reproductive rate and relative fitness of the S. litura strain were strongly affected by acylsugar. Altogether, these results indicate that acylsugar could contribute to plant protection due to toxicity to pests, diffused availability, and low environmental persistence. This could represent a complementary and alternative strategy to control populations of insect pests.
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Affiliation(s)
- Ran Wang
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Bingli Gao
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Qinghe Zhang
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Ziyi Zhang
- College of Agriculture and Forestry Technology, Hebei North University, Zhangjiakou, China
| | - Yunyi Li
- College of Plant Protection, Shanxi Agricultural University, Taigu, China
| | - Qingyi Yang
- College of Agriculture and Forestry Technology, Hebei North University, Zhangjiakou, China
| | - Mi Zhang
- College of Agriculture and Forestry Technology, Hebei North University, Zhangjiakou, China
| | - Wenxiang Li
- College of Agriculture and Forestry Technology, Hebei North University, Zhangjiakou, China
| | - Chen Luo
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
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Sun X, Wei R, Li L, Zhu B, Liang P, Gao X. Resistance and fitness costs in diamondback moths after selection using broflanilide, a novel meta-diamide insecticide. INSECT SCIENCE 2022; 29:188-198. [PMID: 33860634 DOI: 10.1111/1744-7917.12917] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Revised: 03/06/2021] [Accepted: 03/08/2021] [Indexed: 06/12/2023]
Abstract
The diamondback moth (DBM) Plutella xylostella (L.) (Lepidoptera: Plutellidae) is an insect pest found around the world that feeds on cruciferous crops. The DBM has become resistant to most insecticides in current use in the field. Broflanilide is a novel meta-diamide insecticide that binds to a new site on the γ-aminobutyric acid receptor and very efficiently protects against most pests in the order Lepidoptera, including DBM. In this study, the resistance of a laboratory-bred susceptible strain of DBM to broflanilide and the fitness costs posed by broflanilide to the DBM were evaluated. The DBM had no obvious resistance to broflanilide after 10 generations of selection. The realized heritability h2 was 0.033, suggesting a low risk of resistance developing in this strain. The F10 generation had no cross-resistance to the insecticides abamectin and endosulfan (which target the γ-aminobutyric acid receptor) and chlorantraniliprole (which targets a non-γ-aminobutyric acid receptor). The specific activities of important detoxification enzymes (cytochrome P450 monooxygenase, esterase, and glutathione S-transferase) were not obviously altered. However, the larval stage was prolonged and the adult stage was shortened significantly in F11 generation than the F0 generation. The total preoviposition period TPOP significantly prolonged 1.90 d in F11 generation. The fitness value Rf (0.93) was lower for the F11 generation than the F0 generation. The results indicated that long-term exposure to broflanilide exerts clear fitness costs in the DBM. This information will be useful in identifying reasonable broflanilide application guidelines for managing broflanilide resistance in the DBM.
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Affiliation(s)
- Xi Sun
- Department of Entomology, China Agricultural University, Beijing, 100193, China
| | - Rui Wei
- Department of Entomology, China Agricultural University, Beijing, 100193, China
| | - Linhong Li
- Department of Entomology, China Agricultural University, Beijing, 100193, China
| | - Bin Zhu
- Department of Entomology, China Agricultural University, Beijing, 100193, China
| | - Pei Liang
- Department of Entomology, China Agricultural University, Beijing, 100193, China
| | - Xiwu Gao
- Department of Entomology, China Agricultural University, Beijing, 100193, China
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Jiang D, Qian C, Wang D, Wang F, Zhao S, Yang Y, Baxter SW, Wang X, Wu Y. Varying contributions of three ryanodine receptor point mutations to diamide insecticide resistance in Plutella xylostella. PEST MANAGEMENT SCIENCE 2021; 77:4874-4883. [PMID: 34176224 DOI: 10.1002/ps.6534] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/20/2021] [Accepted: 06/27/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Although decoding the molecular mechanisms underlying insecticide resistance has often proven difficult, recent progress has revealed that specific mutations in the ryanodine receptor (RyR) of the diamondback moth, Plutella xylostella, can confer resistance to diamide insecticides. The extent to which specific RyR mutations contribute to the diamide resistance phenotype, the associated genetic traits and fitness costs remain limited. RESULTS Three field-evolved PxRyR mutations (G4946E, I4790 M, and I4790 K) were respectively introgressed into a common susceptible background strain (IPP-S) of P. xylostella with marker-assisted backcrossing. The mutations alone can result in moderate to high levels of resistance to five commercial diamides (flubendiamide, chlorantraniliprole, cyantraniliprole, tetraniliprole, and cyclaniliprole), and the resistance intensity mediated by the three mutations was hierarchical in order of I4790 K (1199- to >2778-fold) > G4946E (39- to 739-fold) > I4790 M (16- to 57-fold). Flubendiamide resistance was autosomal and incompletely recessive, and was significantly linked with the introgressed mutations in the three constructed strains. In addition, the resistance levels to flubendiamide of hybrid progeny from any two resistant strains fell in between the status of their parents. Furthermore, by comparing the net replacement rate, the fitness of 4946E, 4790 M and 4790 K strains were 0.77, 0.93 and 0.92 relative to the IPP-S strain, respectively. CONCLUSION Three independent PxRyR mutations confer varying degrees of resistance to diamides in P. xylostella. Among the three mutations, I4790 K confers highest levels of resistance (> 1000-fold) to all five commercial diamides. The findings can guide resistance management practices for diamides in P. xylostella and other arthropods.
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Affiliation(s)
- Dong Jiang
- Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Cheng Qian
- Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Danhui Wang
- Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Falong Wang
- Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Shan Zhao
- Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Yihua Yang
- Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Simon W Baxter
- Bio21 Institute, School of BioSciences, University of Melbourne, Melbourne, VIC, Australia
| | - Xingliang Wang
- Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Yidong Wu
- Key Laboratory of Plant Immunity and College of Plant Protection, Nanjing Agricultural University, Nanjing, China
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Uesugi R. Historical changes in the lethal effects of insecticides against the diamondback moth, Plutella xylostella (L.). PEST MANAGEMENT SCIENCE 2021; 77:3116-3125. [PMID: 33639038 DOI: 10.1002/ps.6344] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 02/08/2021] [Accepted: 02/27/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND The diamondback moth, Plutella xylostella (L.), is one of the most destructive pests owing to the rapid development of resistance to various groups of insecticides. Although the rotation strategy has become common, resistance management continues to be a critical issue. RESULTS In Japan, historical changes in the susceptibility of P. xylostella to insecticides were estimated using 82 references. The meta-analysis using generalized linear mixed models suggested that each mode of action (MoA) had different patterns of changes to the susceptibility, which might be due to the prevalence of the rotation strategy since the 2010s and the fitness cost of the resistance gene. For example, spinosyns and bacterial insecticide Bacillus thuringiensis (Bt), for which resistance has a high fitness cost, maintained high lethal effects on P. xylostella throughout several decades. However, pyrethroids and benzoylureas, for which resistance has no or little fitness cost, remained at low levels of susceptibility regardless of the rotation strategy. CONCLUSION Our findings suggest optimal combinations of MoA for a sustainable rotation strategy based on their stability and recovery of effectiveness. Susceptibility monitoring using our method and further study of fitness costs will improve the rotation strategy concerning P. xylostella in the future. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Ryuji Uesugi
- Division of Agro-Environment Research, Tohoku Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Morioka, Japan
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11
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Lima Neto JE, da Solidade Ribeiro LM, de Siqueira HÁA. Inheritance and Fitness of Plutella xylostella (Lepidoptera: Plutellidae) Resistance to Chlorfenapyr. JOURNAL OF ECONOMIC ENTOMOLOGY 2021; 114:875-884. [PMID: 33479776 DOI: 10.1093/jee/toaa299] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Indexed: 06/12/2023]
Abstract
The diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae), is a key pest of Brassicaceae worldwide. Populations have globally evolved resistance to various insecticides including chlorfenapyr, which was observed at high frequency in Brazil. We report the genetic characterization and fitness costs associated with chlorfenapyr resistance in a field-derived strain. The resistant strain (BZR-RR) and a susceptible strain (REC-SS) were used in both concentration-response bioassays and demography-based approach. Inheritance pattern of chlorfenapyr resistance was determined by conducting reciprocal crosses between susceptible and resistant strains, and by backcrossing. Next, life table analysis for the susceptible, heterozygotes, and resistant strains was performed to assess eventual fitness costs associated with chlorfenapyr resistance. Resistance of P. xylostella (BZR-RR) strain to chlorfenapyr was very high (RR50 = 421.58-fold) and also autosomal (no differences between reciprocal crosses), monofactorial and incompletely dominant (F1 pool DD = 0.26 ± 0.14). Dominance (h) was concentration dependent with 16 mg/l allowing at least 95% survival of the resistant heterozygotes. Recessive fitness cost was observed to be associated with resistance to chlorfenapyr. The relative fitness of heterozygotes (RS) and resistant homozygotes (BZR-RR) in comparison to the susceptible strain (REC-SS) was 0.91 and 0.23, respectively. Significant differences were found for many fitness components in the resistant homozygotes. Altogether, results suggest a rational use of chlorfenapyr in areas where susceptible populations still prevail, in parallel with the use of diagnostic concentrations (e. g., 20 mg chlorfenapyr/l), and rotation with different mode of actions, for which fitness costs of resistance are nonrecessive in P. xylostella.
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Affiliation(s)
- Jaconias Escócio Lima Neto
- Departamento de Agronomia-Entomologia, Universidade Federal Rural de Pernambuco, Dois Irmãos, Recife, PE, Brazil
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Liu S, Yao X, Xiang X, Yang Q, Wang X, Xin T, Yu S. Fitness costs associated with chlorantraniliprole resistance in Spodoptera exigua (Lepidoptera: Noctuidae). PEST MANAGEMENT SCIENCE 2021; 77:1739-1747. [PMID: 33232550 DOI: 10.1002/ps.6194] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 11/19/2020] [Accepted: 11/24/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND The field population of Spodoptera exigua, an intermittently occurring polyphagous pest, has developed resistance to chlorantraniliprole, while whether or not such resistance carries fitness costs remains poorly understood. Here we selected six generations of the Leshan population (LS-P) by two-way selecting method, and obtained a highly resistant strain (CH-RE) and resistant degeneration strain (CH-SE) sharing a similar genetic background. After that fitness costs were evaluated by comparing the life history characteristics of CH-RE, CH-SE and the laboratory susceptible strain (SE-Lab) via the age-stage two-sex life table method. RESULTS The resistance ratio of CH-RE and CH-SE were 226.69-fold and 3.72-fold, respectively, and the estimated realized heritability (h2 ) of CH-RE was 0.058. Compared with CH-SE, the duration of pre-adult, the longevity of adult, adult preoviposition period (APOP) and average generation time (T) of CH-RE had significantly increased, but the oviposition days, average fecundity, intrinsic growth rate (r), weekly growth rate (λ) and reproductive rate (R0 ) decreased significantly. Moreover, the relative fitness of CH-RE was 0.25, and showed fitness costs. Concurrently, the fecundity of CH-SE was slightly lower than SE-Lab, but there was no significant difference in r, λ and R0 , and the fitness (1) of CH-SE was similar to SE-Lab (1.02), which was no fitness cost. CONCLUSION These findings represent that chlorantraniliprole resistance in S. exigua has a fitness cost, and the fitness cost will disappear with the recovery of sensitivity when the insecticide is stopped for field populations, supporting that such resistance would be managed by switching off the selection pressure with rotation with alternate insecticides. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Shuhua Liu
- Agricultural Insect and Pest Control Laboratory, College of Agronomy, Sichuan Agricultural University, Chengdu, China
| | - Xinge Yao
- Agricultural Insect and Pest Control Laboratory, College of Agronomy, Sichuan Agricultural University, Chengdu, China
| | - Xing Xiang
- Agricultural Insect and Pest Control Laboratory, College of Agronomy, Sichuan Agricultural University, Chengdu, China
| | - Qunfang Yang
- Agricultural Insect and Pest Control Laboratory, College of Agronomy, Sichuan Agricultural University, Chengdu, China
| | - Xuegui Wang
- Agricultural Insect and Pest Control Laboratory, College of Agronomy, Sichuan Agricultural University, Chengdu, China
| | - Tian Xin
- Agricultural Insect and Pest Control Laboratory, College of Agronomy, Sichuan Agricultural University, Chengdu, China
| | - Siyuan Yu
- Agricultural Insect and Pest Control Laboratory, College of Agronomy, Sichuan Agricultural University, Chengdu, China
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Wang R, Fang Y, Zhang J, Wang J, Feng H, Luo C. Characterization of field-evolved resistance to pyridalyl in a near-isogenic line of diamondback moth, Plutella xylostella. PEST MANAGEMENT SCIENCE 2021; 77:1197-1203. [PMID: 33035398 DOI: 10.1002/ps.6129] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 09/23/2020] [Accepted: 10/09/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Plutella xylostella has developed resistance to a variety of pesticides in the field. Selection, inheritance, a near-isogenic line, cross-resistance and biochemical mechanisms of pyridalyl resistance were characterized in a field-collected resistant population of P. xylostella from China. RESULTS Compared with a susceptible IVF-S strain, the field-collected FZ population showed ~ 350-fold resistance to pyridalyl. The FZ-PY strain, selected from the FZ population using pyridalyl, developed ~ 640-fold resistance to pyridalyl. Inheritance tests indicated that pyridalyl resistance in the FZ-PY strain was autosomal and incompletely recessive. Through successive backcrossing to IVF-S, a near-isogenic strain (NIL-PY) was established that exhibited 191.21-fold resistance to pyridalyl and no cross-resistance to other tested popular insecticides. No significant effects of synergists and higher activities of metabolic enzymes were observed in NIL-PY compared with IVF-S. Furthermore, the survival rate of NIL-PY larvae, and female oviposition, fecundity and egg viability were markedly reduced in NIL-PY compared with IVF-S. The fitness of NIL-PY was found to be 0.56 compared with IVF-S. CONCLUSION Considering that no relevant effects of synergists or oxidative metabolism were observed in NIL-PY, and that pyridalyl resistance results in significant fitness costs compared with IVF-S, further research will be conducted on the mechanism of target-site resistance. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Ran Wang
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Yong Fang
- Agriculture Biotechnology Institute, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Jiasong Zhang
- National Engineering Research Center of Sugarcane, Fujian Agricultural and Forestry University, Fuzhou, China
| | - Jinda Wang
- National Engineering Research Center of Sugarcane, Fujian Agricultural and Forestry University, Fuzhou, China
| | | | - Chen Luo
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
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Saeed R, Abbas N, Hafez AM. Fitness cost of imidacloprid resistance in the cotton-staining bug, Dysdercus koenigii. CHEMOSPHERE 2021; 265:129118. [PMID: 33280850 DOI: 10.1016/j.chemosphere.2020.129118] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 11/10/2020] [Accepted: 11/23/2020] [Indexed: 06/12/2023]
Abstract
Dysdercus koenigii, a serious cotton-staining insect pest in many countries, has shown high resistance to imidacloprid, a systemic neonicotinoid insecticide used to control sap-sucking pests. With the aim of creating an effective management strategy, the biological traits of susceptible (SS) and imidacloprid-resistant (Imida-RS) D. koenigii, as well as their reciprocal crosses (CR1 and CR2), were investigated here using a life table established on age, stage, and two-sex patterns. Compared with SS D. koenigii, Imida-RS and CR1 strains had lower relative fitness (0.80 and 0.47, respectively) and fecundity (eggs per female); prolonged egg duration and a prolonged adult preoviposition period; shorter nymphal duration, male/female total longevity, and oviposition days, and a shorter total preoviposition period. However, there were no differences among strains in nymphal survival rates and female ratio. The CR2 D. koenigii had similar relative fitness value (1.09), suggested no fitness cost in most of the parameters. Demographic parameters, including net reproductive rate, were lower in the Imida-RS strain than in SS and CR2 D. koenigii. Similarly, the Imida-RS and CR1 strains had shorter generation time and doubling time, lower reproductive value and life expectancy relative to the SS and CR2 D. koenigii. In addition, age-specific fecundity was negatively affected in the CR1 strain compared with the other strains. These findings could help facilitate the development of rational D. koenigii control strategies.
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Affiliation(s)
- Rabia Saeed
- Entomology Section, Central Cotton Research Institute, Multan, 60000, Pakistan
| | - Naeem Abbas
- Pesticides and Environmental Toxicology Laboratory, Department of Plant Protection, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh, 11451, Saudi Arabia.
| | - Abdulwahab M Hafez
- Pesticides and Environmental Toxicology Laboratory, Department of Plant Protection, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh, 11451, Saudi Arabia.
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Ullah F, Gul H, Tariq K, Desneux N, Gao X, Song D. Fitness costs in clothianidin-resistant population of the melon aphid, Aphis gossypii. PLoS One 2020; 15:e0238707. [PMID: 32925934 PMCID: PMC7489515 DOI: 10.1371/journal.pone.0238707] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 08/14/2020] [Indexed: 01/20/2023] Open
Abstract
Clothianidin is a second-generation neonicotinoid insecticide, widely used against sap-sucking insect pest including melon aphid, Aphis gossypii Glover (Hemiptera: Aphididae). This pest causes severe economic damage to Cucurbitaceae plants worldwide. In this study, we investigated clothianidin resistance development under continuous selection pressure. Moreover, the age-stage, two-sex life table approach was used to evaluate the impact of clothianidin resistance on the fitness of A. gossypii. A clothianidin resistant strain (CT-R) with a 23.17-fold resistance level was developed from a susceptible strain (CT-S) after continuous selection for 24 generations. Life table results showed a significant reduction in the relative fitness (0.847) of CT-R strain compared to the CT-S strain of A. gossypii. The developmental duration, oviposition days, total pre-oviposition period (TPOP), longevity, and fecundity of CT-R strain were found to be significantly lower when compared to CT-S strain. The demographic parameters, including the intrinsic rate of increase (r), finite rate of increase (λ), net reproductive rate (R0), and mean generation time (T) were also significantly decreased in CT-R strain compared to the CT-S strain. Both the reproductive and survival rates were affected by clothianidin resistance in CT-R strain compared with the CT-S strain of A. gossypii. Overall, our results demonstrate that in-depth knowledge about the trade-off at play between resistance degree and fitness cost might be useful to design resistance management strategies against A. gossypii.
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Affiliation(s)
- Farman Ullah
- Department of Entomology, China Agricultural University, Beijing, China
| | - Hina Gul
- Department of Entomology, China Agricultural University, Beijing, China
| | - Kaleem Tariq
- Department of Agriculture Entomology, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa, Pakistan
- Entomology and Nematology Department, Steinmetz Hall, University of Florida, Gainesville, Florida, United States of America
- USDA/ARS, Center for Medical, Agricultural and Veterinary Entomology, Gainesville, Florida, United States of America
| | | | - Xiwu Gao
- Department of Entomology, China Agricultural University, Beijing, China
| | - Dunlun Song
- Department of Entomology, China Agricultural University, Beijing, China
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Wang R, Wang Z, Luo C, Yang G. Characterization of pyridalyl resistance in a laboratory-selected strain of Frankliniella occidentalis. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2020; 166:104564. [PMID: 32448418 DOI: 10.1016/j.pestbp.2020.104564] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 03/12/2020] [Accepted: 03/19/2020] [Indexed: 06/11/2023]
Abstract
Frankliniella occidentalis, the western flower thrips, is one of most notorious pests on a variety of crops worldwide and many populations have high resistance to different types of insecticides. In order to determine the susceptibility of F. occidentalis to the insecticide pyridalyl in the field and to understand the potential mechanism of resistance, we conducted field monitoring of resistance and investigated cross-resistance, fitness cost, and synergism for the 75.8-fold pyridalyl-resistant strain (PY-R) established with a long-term successive laboratory selection. The results showed that all field populations of F. occidentalis had high susceptibility to pyridalyl from 2016 to 2017. The PY-R strain showed no cross-resistance to spinosad, spinetoram, abamectin, imidacloprid, or pyriproxyfen. Tests of synergism demonstrated that piperonyl butoxide (PBO) and diethyl maleate (DEM) significantly inhibited pyridalyl resistance in the PY-R strain. Moreover, PY-R showed lower pupation and emergence rates than the susceptible strain (XY-S), and female fecundity was also significantly lower in PY-R than in XY-S. By calculating the net replacement rate (R0) of XY-S, the fitness of PY-R was established as 0.52. In conclusion, the susceptibility of F. occidentalis to pyridalyl is still high in China, but resistance could be developed by successive-generation selections. Enhanced metabolic detoxification is possibly involved in resistance in PY-R, which caused significant fitness costs. Thus, pyridalyl will likely prove useful in the field for controlling F. occidentalis in China, and development of resistance could be delayed by rotating pyridalyl with other chemical agents lacking cross-resistance.
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Affiliation(s)
- Ran Wang
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
| | - Zhenyu Wang
- College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Chen Luo
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China
| | - Guangfu Yang
- College of Chemistry, Central China Normal University, Wuhan 430079, China.
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17
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Wang R, Qu C, Wang Z, Yang G. Cross-resistance, biochemical mechanism and fitness costs of laboratory-selected resistance to pyridalyl in diamondback moth, Plutella xylostella. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2020; 163:8-13. [PMID: 31973873 DOI: 10.1016/j.pestbp.2019.10.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Revised: 10/01/2019] [Accepted: 10/01/2019] [Indexed: 06/10/2023]
Abstract
Pyridalyl belongs to one novel type of insecticides with uncertain mode of action, and it showed significant efficacy against Plutella xylostella, which has been considered as one notorious insect pest in the world. To characterize pyridalyl resistance in P. xylostella, one susceptible strain XY-PS and one laboratory-selected pyridalyl-resistant strain XY-PR (34.4-fold) were used to establish cross-resistance patterns, and no cross-resistance to a series of popular insecticides in the XY-PR was observed. Activities of metabolic enzymes were measured and results showed that there was an approximate 5.2-fold significant increase in cytochrome P450 monooxygenase (P450) and no significant differences in glutathione S-transferase (GST) and esterase between XY-PR and XY-PS, indicating that the enhanced activity of P450 could be dominant mechanism of detoxification. Furthermore, expression profiles of three previously published resistance-associated P450 genes were established but no one was significantly different expression. Besides, fitness costs associated with pyridalyl resistance was observed in XY-PR, and it had been found that survival rate of larvae and hatchability were reduced in XY-PR. Then, by calculating the net replacement rate (R0) of XY-PS, the fitness of XY-PR was established as 0.64. In conclusion, above results provided helpful data and information for studying further on mechanism of pyridalyl resistance, and will be conductive to design rational strategies of resistance management in P. xylostella.
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Affiliation(s)
- Ran Wang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Cheng Qu
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan, 430079, China
| | - Zhenyu Wang
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing 100097, China.
| | - Guangfu Yang
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan, 430079, China..
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Ma K, Tang Q, Xia J, Lv N, Gao X. Fitness costs of sulfoxaflor resistance in the cotton aphid, Aphis gossypii Glover. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2019; 158:40-46. [PMID: 31378359 DOI: 10.1016/j.pestbp.2019.04.009] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 04/07/2019] [Accepted: 04/17/2019] [Indexed: 06/10/2023]
Abstract
Aphis gossypii Glover is an economically important pest of numerous crops throughout the world. Some field populations of A.gossypii in China have developed moderate level of resistance to sulfoxaflor, a newly released sulfoximine insecticide for management of sap-feeding pests. To evaluate the effect of sulfoxaflor resistance on the fitness cost of A. gossypii, the life history traits of sulfoxaflor-resistant strain (SulR) and an isogenic susceptible strain (SS) were compared using the age-stage, two-sex life table approach. The results showed that the resistant strain had a reduction in fitness (relative fitness = 0.917), along with significantly decreases in longevity, fecundity, net reproductive (R0), mean generation time (T) and gross reproductive rate (GRR). Compared to the susceptible strain, SulR strain showing a shorter developmental duration of each nymph instar stage. Moreover, the adult pre-oviposition period (APOP) and total preoviposition period (TPOP) of SulR strain were also significantly shorter than that of the susceptible strain. Investigation of six development and reproduction related genes indicated that EcR, USP and JHBP were overexpressed in the SulR strain, while the mRNA transcript level of Vg was decreased significantly compared to the susceptible strain. These results suggest that there is a fitness cost associated with sulfoxaflor resistance in A. gossypii and the different expression of EcR, USP, JHBP, and Vg may play very important role in this trade-off.
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Affiliation(s)
- Kangsheng Ma
- Department of Entomology, China Agricultural University, Beijing 100193, China
| | - Qiuling Tang
- Department of Entomology, China Agricultural University, Beijing 100193, China
| | - Jin Xia
- Department of Entomology, China Agricultural University, Beijing 100193, China
| | - Nannan Lv
- Department of Entomology, China Agricultural University, Beijing 100193, China
| | - Xiwu Gao
- Department of Entomology, China Agricultural University, Beijing 100193, China.
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Yin C, Wang R, Luo C, Zhao K, Wu Q, Wang Z, Yang G. Monitoring, Cross-Resistance, Inheritance, and Synergism of Plutella xylostella (Lepidoptera: Plutellidae) Resistance to Pyridalyl in China. JOURNAL OF ECONOMIC ENTOMOLOGY 2019; 112:329-334. [PMID: 30371797 DOI: 10.1093/jee/toy334] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Indexed: 06/08/2023]
Abstract
Pyridalyl is an insecticide that shows significant efficacy against Plutella xylostella, a notorious pest insect worldwide. In this study, we monitored resistance of P. xylostella to pyridalyl in China from 2016 to 2017, determined cross-resistance, inheritance, and synergism of pyridalyl resistance in two pyridalyl-resistant populations, one field-evolved resistant population (ZL-PR) and one laboratory-selected resistant population (XY-PR). We found that variation in susceptibility among 15 field populations in China from 2016 to 2017 was high, with mean LC50 values ranging from 1.839 to 1,652 mg/liter. The laboratory-selected XY-PR strain showed 31.3-fold resistance to pyridalyl and moderate cross-resistance to fipronil. The ZL-PR displayed 1,050.2-fold resistance to pyridalyl and high resistance to all tested insecticides. Genetic analysis illustrated that pyridalyl resistance in ZL-PR was autosomally inherited and incompletely recessive. However, pyridalyl resistance in the XY-PR strain was autosomally inherited but incompletely dominant. Moreover, piperonyl butoxide significantly inhibited pyridalyl resistance in the XY-PR strain. In conclusion, P. xylostella field populations from South China have high levels of resistance to pyridalyl and different modes of inheritance of resistance were found in XY-PR and ZL-PR. Moreover, enhanced oxidative metabolism is possibly involved in resistance of the XY-PR strain but not in the ZL-PR strain.
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Affiliation(s)
- Chunyan Yin
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry
- International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan, China
| | - Ran Wang
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Chen Luo
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Kang Zhao
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry
- International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan, China
| | - Qiongyou Wu
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry
- International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan, China
| | - Zhenyu Wang
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry
- International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan, China
| | - Guangfu Yang
- Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry
- International Joint Research Center for Intelligent Biosensor Technology and Health, Central China Normal University, Wuhan, China
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Bajda S, Riga M, Wybouw N, Papadaki S, Ouranou E, Fotoukkiaii SM, Vontas J, Van Leeuwen T. Fitness costs of key point mutations that underlie acaricide target-site resistance in the two-spotted spider mite Tetranychus urticae. Evol Appl 2018; 11:1540-1553. [PMID: 30344626 PMCID: PMC6183448 DOI: 10.1111/eva.12643] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 03/20/2018] [Accepted: 04/12/2018] [Indexed: 01/13/2023] Open
Abstract
The frequency of insecticide/acaricide target-site resistance is increasing in arthropod pest populations and is typically underpinned by single point mutations that affect the binding strength between the insecticide/acaricide and its target-site. Theory predicts that although resistance mutations clearly have advantageous effects under the selection pressure of the insecticide/acaricide, they might convey negative pleiotropic effects on other aspects of fitness. If such fitness costs are in place, target-site resistance is thus likely to disappear in the absence of insecticide/acaricide treatment, a process that would counteract the spread of resistance in agricultural crops. Hence, there is a great need to reliably quantify the various potential pleiotropic effects of target-site resistance point mutations on arthropod fitness. Here, we used near-isogenic lines of the spider mite pest Tetranychus urticae that carry well-characterized acaricide target-site resistance mutations to quantify potential fitness costs. Specifically, we analyzed P262T in the mitochondrial cytochrome b, the combined G314D and G326E substitutions in the glutamate-gated chloride channels, L1024V in the voltage-gated sodium channel, and I1017F in chitin synthase 1. Five fertility life table parameters and nine single-generation life-history traits were quantified and compared across a total of 15 mite lines. In addition, we monitored the temporal resistance level dynamics of populations with different starting frequency levels of the chitin synthase resistant allele to further support our findings. Three target-site resistance mutations, I1017F and the co-occurring G314D and G326E mutations, were shown to significantly and consistently alter certain fitness parameters in T. urticae. The other two mutations (P262T and L1024V) did not result in any consistent change in a fitness parameter analyzed in our study. Our findings are discussed in the context of the global spread of T. urticae pesticide resistance and integrated pest management.
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Affiliation(s)
- Sabina Bajda
- Laboratory of AgrozoologyDepartment of Plants and CropsFaculty of Bioscience EngineeringGhent UniversityGhentBelgium
- Institute for Biodiversity and Ecosystem DynamicsUniversity of AmsterdamAmsterdamthe Netherlands
| | - Maria Riga
- Department of BiologyUniversity of CreteHeraklion, CreteGreece
- Institute of Molecular Biology & BiotechnologyFoundation for Research & Technology HellasHeraklion, CreteGreece
| | - Nicky Wybouw
- Laboratory of AgrozoologyDepartment of Plants and CropsFaculty of Bioscience EngineeringGhent UniversityGhentBelgium
- Institute for Biodiversity and Ecosystem DynamicsUniversity of AmsterdamAmsterdamthe Netherlands
| | | | - Eleni Ouranou
- Department of BiologyUniversity of CreteHeraklion, CreteGreece
| | | | - John Vontas
- Institute of Molecular Biology & BiotechnologyFoundation for Research & Technology HellasHeraklion, CreteGreece
- Laboratory of Pesticide ScienceDepartment of Crop ScienceAgricultural University of AthensAthensGreece
| | - Thomas Van Leeuwen
- Laboratory of AgrozoologyDepartment of Plants and CropsFaculty of Bioscience EngineeringGhent UniversityGhentBelgium
- Institute for Biodiversity and Ecosystem DynamicsUniversity of AmsterdamAmsterdamthe Netherlands
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Zhang Y, Liu B, Zhang Z, Wang L, Guo H, Li Z, He P, Liu Z, Fang J. Differential Expression of P450 Genes and nAChR Subunits Associated With Imidacloprid Resistance in Laodelphax striatellus (Hemiptera: Delphacidae). JOURNAL OF ECONOMIC ENTOMOLOGY 2018; 111:1382-1387. [PMID: 29617902 DOI: 10.1093/jee/toy051] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Indexed: 05/27/2023]
Abstract
Imidacloprid is a key insecticide used for controlling sucking insect pests, including the small brown planthopper (Laodelphax striatellus, Fallén) (Hemiptera: Delphacidae), an important agricultural pest of rice. A strain of L. striatellus (YN-ILR) developed 21-fold resistance when selected with imidacloprid on a susceptible YN strain. An in vitro study on piperonyl butoxide synergism indicated that enhanced detoxification mediated by cytochrome P450s contributed to imidacloprid resistance to some extent, and multiple P450 genes showed altered expression in the imidacloprid-resistant YN-ILR strain compared with the susceptible YN strain (CYP425B1-CYP6BD10 had 1.51- to 11.45-fold higher expression, CYP4CE2-CYP4DD1V2 had 0.12- to 0.57-fold lower expression). While there were no mutations in target nicotinic acetylcholine receptor (nAChR) genes, subunits of Lsα1, Lsβ1, and Lsβ3 in the YN-ILR strain showed 3.86-, 4.39-, and 2.59-fold higher expression and Lsa8 displayed 0.38-fold lower expression than the YN strain. Moreover, 21-fold moderate imidacloprid resistance in individuals of L. striatellus did not produce a fitness cost. The findings suggest that L. striatellus has the capacity to develop resistance to imidacloprid through P450 detoxification and potential target nAChR expression changes, and moderate imidacloprid resistance was not associated with a fitness cost.
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Affiliation(s)
- Yueliang Zhang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Nanjing, China
| | - Baosheng Liu
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Nanjing, China
| | - Zhichun Zhang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Nanjing, China
| | - Lihua Wang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Nanjing, China
| | - Huifang Guo
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Nanjing, China
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, China
| | - Peng He
- State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Guizhou University, Guiyang, China
| | - Zewen Liu
- Key Laboratory of Monitoring and Management of Plant Disease and Insects, Ministry of Agriculture, Nanjing Agricultural University, Nanjing, China
| | - Jichao Fang
- Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences, Key Laboratory of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Nanjing, China
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22
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Riga M, Bajda S, Themistokleous C, Papadaki S, Palzewicz M, Dermauw W, Vontas J, Leeuwen TV. The relative contribution of target-site mutations in complex acaricide resistant phenotypes as assessed by marker assisted backcrossing in Tetranychus urticae. Sci Rep 2017; 7:9202. [PMID: 28835683 PMCID: PMC5569037 DOI: 10.1038/s41598-017-09054-y] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2017] [Accepted: 07/19/2017] [Indexed: 12/14/2022] Open
Abstract
The mechanisms underlying insecticide and acaricide resistance in insects and mites are often complex, including additive effects of target-site insensitivity, increased metabolism and transport. The extent to which target-site resistance mutations contribute to the resistance phenotype is, however, not well studied. Here, we used marker-assisted backcrossing to create 30 congenic lines carrying nine mutations (alone, or in combination in a few cases) associated with resistance to avermectins, pyrethroids, mite growth inhibitors and mitochondrial complex III inhibitors (QoI) in a polyphagous arthropod pest, the spider mite Tetranychus urticae. Toxicity tests revealed that mutations in the voltage-gated sodium channel, chitin synthase 1 and cytochrome b confer high levels of resistance and, when fixed in a population, these mutations alone can result in field failure of acaricide treatment. In contrast, although we confirmed the implication of mutations in glutamate-gated chloride channels in abamectin and milbemectin insensitivity, these mutations do not lead to the high resistance levels that are often reported in abamectin resistant strains of T. urticae. Overall, this study functionally validates reported target-site resistance mutations in T. urticae, by uncoupling them from additional mechanisms, allowing to finally investigate the strength of the conferred phenotype in vivo.
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Affiliation(s)
- Maria Riga
- Department of Biology, University of Crete, 70013, Heraklion, Crete, Greece.,Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology Hellas, 100 N. Plastira Street, 700 13, Heraklion, Crete, Greece
| | - Sabina Bajda
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, P.O. Box 9424, 1090 GE, Amsterdam, The Netherlands
| | | | - Stavrini Papadaki
- Department of Biology, University of Crete, 70013, Heraklion, Crete, Greece
| | - Maria Palzewicz
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, P.O. Box 9424, 1090 GE, Amsterdam, The Netherlands
| | - Wannes Dermauw
- Laboratory of Agrozoology, Department of Crop Protection, Faculty of Bioscience Engineering, Coupure Links 653, Ghent University, B-9000, Ghent, Belgium
| | - John Vontas
- Institute of Molecular Biology & Biotechnology, Foundation for Research & Technology Hellas, 100 N. Plastira Street, 700 13, Heraklion, Crete, Greece.,Laboratory of Pesticide Science, Department of Crop Science, Agricultural University of Athens, 75 Iera Odos Street, 11855, Athens, Greece
| | - Thomas Van Leeuwen
- Institute for Biodiversity and Ecosystem Dynamics, University of Amsterdam, P.O. Box 9424, 1090 GE, Amsterdam, The Netherlands. .,Laboratory of Agrozoology, Department of Crop Protection, Faculty of Bioscience Engineering, Coupure Links 653, Ghent University, B-9000, Ghent, Belgium.
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23
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Shen J, Li D, Zhang S, Zhu X, Wan H, Li J. Fitness and inheritance of metaflumizone resistance in Plutella xylostella. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2017; 139:53-59. [PMID: 28595922 DOI: 10.1016/j.pestbp.2017.04.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 04/12/2017] [Accepted: 04/16/2017] [Indexed: 05/10/2023]
Abstract
The diamondback moth, Plutella xylostella (L.) has developed resistance to many types of insecticides in the field. To study inheritance and fitness cost of metaflumizone resistance, a susceptible strain of diamondback moth was continuously selected with metaflumizone during 37 generations under laboratory conditions. The resistance to metaflumizone was at a high level (resistance ratios from 250.37 to 1450.47-fold). We investigated a metaflumizone resistance strain (G27) and a susceptible strain of P. xylostella, using the age-stage, two-sex life table approach. Compared to the susceptible strain, egg duration, the developmental time of the first and second instar larvae, pupae duration, adult preoviposition period (APOP), total preoviposition period (TPOP), egg hatchability, the survival rate of second instar larva and the mean generation time (T) were significantly differences in the resistant strain. The resistant strain had a relative fitness of 0.78. The inheritance of metaflumizone resistance was also studied by crossing the metaflumizone resistant and susceptible populations. Results revealed an autosomal and incompletely recessive mode of inheritance for metaflumizone resistance in the resistant population of P. xylostella. The present study provided useful information for planning potential management strategies to delay development of metaflumizone resistance in P. xylostella.
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Affiliation(s)
- Jun Shen
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Dongyang Li
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Shuzhen Zhang
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Xun Zhu
- Department of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Hu Wan
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Jianhong Li
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.
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24
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Xu Z, Liu Y, Wei P, Feng K, Niu J, Shen G, Lu W, Xiao W, Wang J, Smagghe GJ, Xu Q, He L. High Gama-Aminobutyric Acid Contents Involved in Abamectin Resistance and Predation, an Interesting Phenomenon in Spider Mites. Front Physiol 2017; 8:216. [PMID: 28443033 PMCID: PMC5387048 DOI: 10.3389/fphys.2017.00216] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Accepted: 03/24/2017] [Indexed: 12/14/2022] Open
Abstract
Abamectin has been widely used as an insecticide/acaricide for more than 30 years because of its superior bioactivity. Recently, an interesting phenomenon was identified in the carmine spider mite, Tetranychus cinnabarinus, an important pest in agriculture. The gamma aminobutyric acid (GABA) contents in a laboratory abamectin resistant strain of T. cinnabarinus (AbR) were significantly increased. Decreases in activity and mRNA expression of GABA transaminase (GABA-T) were responsible for GABA accumulation in AbR mites. To clarify the mechanism of GABA accumulation mediated abamectin resistance, three artificial approaches were conducted to increase GABA contents in susceptible mites, including feeding of vigabatrin (a specific inhibitor of GABA-T), feeding of exogenous GABA, and inhibition of GABA-T gene expression. The results showed that susceptible mites developed resistance to abamectin when the GABA contents were artificially increased. We also observed that the mites with higher GABA contents moved more slowly, which is consistent with the fact that GABA is an inhibitory neurotransmitter in arthropods. Subsequently, functional response assays revealed that predation rates of predatory mites on GABA accumulated abamectin-resistant mites were much higher than control groups. The tolerance to abamectin, slow crawling speed, and vulnerability to predators were all resulted from GABA accumulation. This relationship between GABA and predation was also confirmed in a field-collected population. Our finding indicates that predatory mites might be used as a tool for biological control to circumvent the development of abamectin resistance in mites.
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Affiliation(s)
- Zhifeng Xu
- Key Laboratory of Entomology and Pest Control Engineering of Chongqing, College of Plant Protection, Southwest UniversityChongqing, China
| | - Yanchao Liu
- Key Laboratory of Entomology and Pest Control Engineering of Chongqing, College of Plant Protection, Southwest UniversityChongqing, China
| | - Peng Wei
- Key Laboratory of Entomology and Pest Control Engineering of Chongqing, College of Plant Protection, Southwest UniversityChongqing, China
| | - Kaiyang Feng
- Key Laboratory of Entomology and Pest Control Engineering of Chongqing, College of Plant Protection, Southwest UniversityChongqing, China
| | - Jinzhi Niu
- Key Laboratory of Entomology and Pest Control Engineering of Chongqing, College of Plant Protection, Southwest UniversityChongqing, China
| | - Guangmao Shen
- Key Laboratory of Entomology and Pest Control Engineering of Chongqing, College of Plant Protection, Southwest UniversityChongqing, China
| | - Wencai Lu
- Key Laboratory of Entomology and Pest Control Engineering of Chongqing, College of Plant Protection, Southwest UniversityChongqing, China
| | - Wei Xiao
- Key Laboratory of Entomology and Pest Control Engineering of Chongqing, College of Plant Protection, Southwest UniversityChongqing, China
| | - Jinjun Wang
- Key Laboratory of Entomology and Pest Control Engineering of Chongqing, College of Plant Protection, Southwest UniversityChongqing, China
| | - Guy J Smagghe
- Key Laboratory of Entomology and Pest Control Engineering of Chongqing, College of Plant Protection, Southwest UniversityChongqing, China.,Department of Crop Protection, Faculty of Bioscience Engineering, Ghent UniversityGhent, Belgium
| | - Qiang Xu
- Department of Biology, Abilene Christian UniversityAbilene, TX, USA
| | - Lin He
- Key Laboratory of Entomology and Pest Control Engineering of Chongqing, College of Plant Protection, Southwest UniversityChongqing, China
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25
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Zhang S, Zhang X, Shen J, Mao K, You H, Li J. Susceptibility of field populations of the diamondback moth, Plutella xylostella, to a selection of insecticides in Central China. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2016; 132:38-46. [PMID: 27521911 DOI: 10.1016/j.pestbp.2016.01.007] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 12/28/2015] [Accepted: 01/24/2016] [Indexed: 06/06/2023]
Abstract
The diamondback moth (DBM), Plutella xylostella (L.) (Lepidoptera: Plutellidae), is a globally distributed and important economic pest. Chemical control is the primary approach to regulate populations of this pest. However, resistance to insecticides evolves following heavy and frequent use. Therefore, the insecticide resistance in field populations of P. xylostella collected from Central China from 2013 to 2014 was determined with a leaf-dipping method. Based on the results of the monitoring, P. xylostella has developed high levels of resistance to beta-cypermethrin (resistance ratio=69.76-335.76-fold), Bt (WG-001) (RR=35.43-167.36), and chlorfluazuron (RR=13.60-104.95) and medium levels of resistance to chlorantraniliprole (RR=1.19-14.26), chlorfenapyr (RR=4.22-13.44), spinosad (RR=5.89-21.45), indoxacarb (RR=4.01-34.45), and abamectin (RR=23.88-95.15). By contrast, the field populations of P. xylostella remained susceptible to or developed low levels of resistance to diafenthiuron (RR=1.61-8.05), spinetoram (RR=0.88-2.35), and cyantraniliprole (RR=0.4-2.15). Moreover, the LC50 values of field populations of P. xylostella were highly positively correlated between chlorantraniliprole and cyantraniliprole (r=0.88, P=0.045), chlorantraniliprole and spinosad (r=0.66, P=0.039), spinosad and diafenthiuron (r=0.57, P=0.0060), and chlorfenapyr and diafenthiuron (r=0.51, P=0.016). Additionally, the activities of detoxification enzymes in field populations of P. xylostella were significantly positively correlated with the log LC50 values of chlorantraniliprole and spinosad. The results of this study provide an important base for developing effective and successful strategies to manage insecticide resistance in P. xylostella.
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Affiliation(s)
- Shuzhen Zhang
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Xiaolei Zhang
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Jun Shen
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Kaikai Mao
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Hong You
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.
| | - Jianhong Li
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China.
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26
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Dominant fitness costs of resistance to fipronil in Musca domestica Linnaeus (Diptera: Muscidae). Vet Parasitol 2016; 226:78-82. [PMID: 27514889 DOI: 10.1016/j.vetpar.2016.06.035] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 06/21/2016] [Accepted: 06/29/2016] [Indexed: 11/21/2022]
Abstract
House fly, Musca domestica L., (Diptera: Muscidae) a common pest of poultry, has developed resistance to the commonly used insecticide fipronil. The life history traits were examined in the fipronil-selected (Fipro-SEL), susceptible counterpart (UNSEL), and their hybrid progeny strains in order to design an effective resistant management strategy. Compared to the UNSEL strain, the Fipro-SEL was 181.94-fold resistant to fipronil. This resistance was unstable after five generations without selection. The Fipro-SEL had a significantly longer larval duration, lower pupal weight, lower fecundity, lower hatchability, lower number of next generation larvae, lower intrinsic rate of population increase and lower biotic potential than the UNSEL strain. Most fitness parameters of the hybrid progeny were similar and significantly lower than that in the UNSEL strain, suggesting autosomal and dominant fitness costs. Compared to the UNSEL strain, relative the fitness of the Fipro-SEL, Hybrid1 and Hybrid2 was 0.13, 0.33 and 0.30, respectively. Fipronil resistance resulted in high fitness costs and these fitness costs were dominant and autosomal in the Fipro-SEL strain of M. domestica. Rotation of fipronil with other insecticides having no cross resistance should be useful for delaying the development of resistance in M. domestica.
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27
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Wang X, Wang R, Yang Y, Wu S, O'Reilly AO, Wu Y. A point mutation in the glutamate-gated chloride channel of Plutella xylostella is associated with resistance to abamectin. INSECT MOLECULAR BIOLOGY 2016; 25:116-125. [PMID: 26592158 DOI: 10.1111/imb.12204] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The diamondback moth, Plutella xylostella, is a global pest of cruciferous vegetables. Abamectin resistance in a field population of P. xylostella was introgressed into the susceptible Roth strain. The resulting introgression strain Roth-Abm showed 11 000-fold resistance to abamectin compared with Roth. An A309V substitution at the N-terminus of the third transmembrane helix (M3) of the glutamate-gated chloride channel of P. xylostella (PxGluCl) was identified in Roth-Abm. The frequency of the V309 allele of PxGluCl was 94.7% in Roth-Abm, whereas no such allele was detected in Roth. A subpopulation of Roth-Abm was kept without abamectin selection for 20 generations to produce a revertant strain, Roth-Abm-D. Abamectin resistance in Roth-Abm-D declined to 1150-fold compared with Roth, with the V309 allele frequency decreased to 9.6%. After treatment of the Roth-Abm-D strain with 80 mg/l abamectin the V309 allele frequency in the survivors increased to 55%. This demonstrates that the A309V mutation in PxGluCl is strongly associated with a 10-fold increase in abamectin resistance in Roth-Abm relative to Roth-Abm-D. Homology modelling and automated ligand docking results suggest that the A309V substitution allosterically modifies the abamectin-binding site, as opposed to directly eliminating a key binding contact. Other resistance mechanisms to abamectin in Roth-Abm are discussed besides the A309V mutation of PxGluCl.
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Affiliation(s)
- X Wang
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - R Wang
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
- Institute of Plant and Environment Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Y Yang
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - S Wu
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - A O O'Reilly
- School of Natural Sciences and Psychology, Liverpool John Moores University, Liverpool, UK
| | - Y Wu
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
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28
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Che W, Huang J, Guan F, Wu Y, Yang Y. Cross-resistance and Inheritance of Resistance to Emamectin Benzoate in Spodoptera exigua (Lepidoptera: Noctuidae). JOURNAL OF ECONOMIC ENTOMOLOGY 2015; 108:2015-2020. [PMID: 26470348 DOI: 10.1093/jee/tov168] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Accepted: 05/31/2015] [Indexed: 06/05/2023]
Abstract
Beet armyworm, Spodoptera exigua (Hübner), is a worldwide pest of many crops. Chemical insecticides are heavily used for its control in China, and serious resistance has been evolved in the field to a variety of insecticides including emamectin benzoate. Through repeated backcrossing to a susceptible strain (WH-S) and selection with emamectin benzoate, the trait conferring resistance to emamectin benzoate in a field-collected population of S. exigua (moderately resistant to emamectin benzoate and strongly resistant to pyrethroids and indoxacarb) was introgressed into WH-S to generate a near-isogenic resistant strain (WH-EB). Compared with WH-S, the WH-EB strain developed a 1,110-fold resistance to emamectin benzoate and a high level of cross-resistance to abamectin (202-fold), with low levels of cross-resistance to cypermethrin (10-fold) and chlorfluazuron (7-fold), but no cross-resistance to representatives of another six different classes of insecticides (chlorantraniliprole, chlorfenapyr, indoxacarb, spinosad, tebufenozide, and chlorpyrifos). Resistance to emamectin benzoate in WH-EB was autosomal, incompletely dominant, and polygenic. Limited cross-resistance in WH-EB indicates that emamectin benzoate can be rotated with other classes of insecticides to which it does not show cross-resistance to delay the evolution of resistance in S. exigua. The incompletely dominant nature of resistance in S. exigua may explain the rapid evolution of resistance to emamectin benzoate in the field, and careful deployment of this chemical within a resistance management program should be considered.
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Affiliation(s)
- Wunan Che
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
| | - Jianlei Huang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
| | - Fang Guan
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
| | - Yidong Wu
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
| | - Yihua Yang
- College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China.
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29
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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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