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Pezzini D, Taylor KL, Reisig DD, Fritz ML. Cross-pollination in seed-blended refuge and selection for Vip3A resistance in a lepidopteran pest as detected by genomic monitoring. Proc Natl Acad Sci U S A 2024; 121:e2319838121. [PMID: 38513093 PMCID: PMC10990109 DOI: 10.1073/pnas.2319838121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 12/13/2023] [Indexed: 03/23/2024] Open
Abstract
The evolution of pest resistance to management tools reduces productivity and results in economic losses in agricultural systems. To slow its emergence and spread, monitoring and prevention practices are implemented in resistance management programs. Recent work suggests that genomic approaches can identify signs of emerging resistance to aid in resistance management. Here, we empirically examined the sensitivity of genomic monitoring for resistance management in transgenic Bt crops, a globally important agricultural innovation. Whole genome resequencing of wild North American Helicoverpa zea collected from non-expressing refuge and plants expressing Cry1Ab confirmed that resistance-associated signatures of selection were detectable after a single generation of exposure. Upon demonstrating its sensitivity, we applied genomic monitoring to wild H. zea that survived Vip3A exposure resulting from cross-pollination of refuge plants in seed-blended plots. Refuge seed interplanted with transgenic seed exposed H. zea to sublethal doses of Vip3A protein in corn ears and was associated with allele frequency divergence across the genome. Some of the greatest allele frequency divergence occurred in genomic regions adjacent to a previously described candidate gene for Vip3A resistance. Our work highlights the power of genomic monitoring to sensitively detect heritable changes associated with field exposure to Bt toxins and suggests that seed-blended refuge will likely hasten the evolution of resistance to Vip3A in lepidopteran pests.
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Affiliation(s)
- Daniela Pezzini
- Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC27513
| | - Katherine L. Taylor
- Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC27513
- Department of Entomology, University of Maryland, College Park, MD20742
| | - Dominic D. Reisig
- Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC27513
| | - Megan L. Fritz
- Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC27513
- Department of Entomology, University of Maryland, College Park, MD20742
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2
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Coates A, Robinson NA, Dempster T, Johnsen I, Phillips BL. Evolutionary predictions for a parasite metapopulation: Modelling salmon louse resistance to pest controls in aquaculture. Evol Appl 2023; 16:1982-1998. [PMID: 38143899 PMCID: PMC10739098 DOI: 10.1111/eva.13618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 10/20/2023] [Accepted: 11/02/2023] [Indexed: 12/26/2023] Open
Abstract
Pests often evolve resistance to pest controls used in agriculture and aquaculture. The rate of pest adaptation is influenced by the type of control, the selective pressure it imposes, and the gene flow between farms. By understanding how these factors influence evolution at the metapopulation level, pest management strategies that prevent resistance from evolving can be developed. We developed a model for the metapopulation and evolutionary dynamics of the salmon louse (Lepeophtheirus salmonis), which is a major parasite affecting salmon aquaculture. Different management scenarios were simulated across a network of salmon farms covering half of Norway, and their effects on louse epidemiology and evolution were investigated. We compared louse controls that differed in how they were deployed through time (discrete vs. continuous), how they impacted the louse life cycle, and in their overall efficacy. We adjusted the strength of selection imposed by treatments, the dominance effect of the resistant allele, and the geographic location at which resistance originated. Continuously acting strategies (e.g., louse-resistant salmon) were generally more effective than discrete strategies at controlling lice, especially when they increased louse mortality during early developmental stages. However, effective strategies also risked imposing frequent and/or strong selection on lice, thus driving rapid adaptation. Resistant alleles were more likely to be lost through genetic drift when they were recessive, had a low-fitness advantage, or originated in low-farm-density areas. The north-flowing current along the Norwegian coastline dispersed resistant genes from south to north, and limited gene flow in the opposite direction. We demonstrate how evolutionary models can produce quantitative predictions over large spatial and temporal scales and for a range of pest control scenarios. Quantitative outputs can be translated into practical management decisions applied at a regional level to minimise the risk of resistance developing.
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Affiliation(s)
- Andrew Coates
- Sustainable Aquaculture Laboratory – Temperate and Tropical (SALTT), Queenscliff Marine Science CentreDeakin UniversityBurwoodVictoriaAustralia
| | - Nicholas A. Robinson
- Sustainable Aquaculture Laboratory – Temperate and Tropical (SALTT), Queenscliff Marine Science CentreDeakin UniversityBurwoodVictoriaAustralia
- Breeding and Genetics, NofimaÅsNorway
| | - Tim Dempster
- Sustainable Aquaculture Laboratory – Temperate and Tropical (SALTT), Queenscliff Marine Science CentreDeakin UniversityBurwoodVictoriaAustralia
| | | | - Ben L. Phillips
- School of Molecular and Life SciencesCurtin UniversityBentleyWestern AustraliaAustralia
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3
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Blumstein DT, Johnson NA, Katz ND, Kharpatin S, Ortiz‐Ross X, Parra E, Reshke A. Biological lessons for strategic resistance management. Evol Appl 2023; 16:1861-1871. [PMID: 38143901 PMCID: PMC10739074 DOI: 10.1111/eva.13616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 10/28/2023] [Indexed: 12/26/2023] Open
Abstract
Biological resistance to pesticides, vaccines, antibiotics, and chemotherapies creates huge costs to society, including extensive morbidity and mortality. We simultaneously face costly resistance to social changes, such as those required to resolve human-wildlife conflicts and conserve biodiversity and the biosphere. Viewing resistance as a force that impedes change from one state to another, we suggest that an analysis of biological resistance can provide unique and potentially testable insights into understanding resistance to social changes. We review key insights from managing biological resistance and develop a framework that identifies seven strategies to overcome resistance. We apply this framework to consider how it might be used to understand social resistance and generate potentially novel hypotheses that may be useful to both enhance the development of strategies to manage resistance and modulate change in socio-ecological systems.
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Affiliation(s)
- Daniel T. Blumstein
- Department of Ecology and Evolutionary BiologyUniversity of California Los AngelesLos AngelesCaliforniaUSA
| | - Norman A. Johnson
- Department of BiologyUniversity of MassachusettsAmherstMassachusettsUSA
| | - Nurit D. Katz
- Department of Ecology and Evolutionary BiologyUniversity of California Los AngelesLos AngelesCaliforniaUSA
| | - Samuel Kharpatin
- Department of Ecology and Evolutionary BiologyUniversity of California Los AngelesLos AngelesCaliforniaUSA
| | - Xochitl Ortiz‐Ross
- Department of Ecology and Evolutionary BiologyUniversity of California Los AngelesLos AngelesCaliforniaUSA
| | - Eliseo Parra
- Department of Ecology and Evolutionary BiologyUniversity of California Los AngelesLos AngelesCaliforniaUSA
| | - Amanda Reshke
- Department of Ecology and Evolutionary BiologyUniversity of California Los AngelesLos AngelesCaliforniaUSA
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Shaw DR, Asmus AB, Schroeder J, Ervin DE. Changing the paradigm for pesticide resistance management. Pest Manag Sci 2023; 79:4726-4730. [PMID: 37560892 DOI: 10.1002/ps.7709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 07/25/2023] [Accepted: 08/10/2023] [Indexed: 08/11/2023]
Abstract
Collaborative action on the part of all stakeholders in pest management is essential to effectively address the challenges of pesticide resistance. The US Environmental Protection Agency (EPA), through its Pesticide Program Dialogue Committee, recently posted a report on pesticide resistance management and the role the Agency can play in these efforts. In this Perspective, we commend the Agency for acknowledging these needs, and encourage implementation of the recommendations. We urge all stakeholders to follow the example set by the EPA to engage openly, listen to other stakeholders, and determine their role as part of the broader community that is needed to address the challenges of resistance. Our contention is that pesticide resistance will continue to escalate until all stakeholders evaluate their roles in resistance management and work together as a community to influence effective management. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- David R Shaw
- Office of the Provost and Executive Vice President, Mississippi State University, Starkville, MS, USA
| | | | - Jill Schroeder
- Department of Entomology, Plant Pathology, and Weed Science, New Mexico State University, Las Cruces, NM, USA
| | - David E Ervin
- Departments of Environmental Management and Economics, Portland State University, Portland, OR, USA
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5
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Lira EC, Nascimento AR, Bass C, Omoto C, Cônsoli FL. Transcriptomic investigation of the molecular mechanisms underlying resistance to the neonicotinoid thiamethoxam and the pyrethroid lambda-cyhalothrin in Euschistus heros (Hemiptera: Pentatomidae). Pest Manag Sci 2023; 79:5349-5361. [PMID: 37624650 DOI: 10.1002/ps.7745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 08/18/2023] [Accepted: 08/25/2023] [Indexed: 08/27/2023]
Abstract
BACKGROUND Laboratory-selected resistant strains of Euschistus heros to thiamethoxam (NEO) and lambda-cyhalothrin (PYR) were recently reported in Brazil. However, the mechanisms conferring resistance to these insecticides in E. heros remain unresolved. We utilized comparative transcriptome profiling and single nucleotide polymorphism (SNP) calling of susceptible and resistant strains of E. heros to investigate the molecular mechanism(s) underlying resistance. RESULTS The E. heros transcriptome was assembled, generating 91 673 transcripts with a mean length of 720 bp and N50 of 1795 bp. Comparative gene expression analysis between the susceptible (SUS) and NEO strains identified 215 significantly differentially expressed (DE) transcripts. DE transcripts associated with the xenobiotic metabolism were all up-regulated in the NEO strain. The comparative analysis of the SUS and PYR strains identified 204 DE transcripts, including an esterase (esterase FE4), a glutathione-S-transferase, an ABC transporter (ABCC1) and aquaporins that were up-regulated in the PYR strain. We identified 9588 and 15 043 nonsynonymous SNPs in the PYR and NEO strains. One of the SNPs (D70N) detected in the NEO strain occurs in a subunit (α5) of the nAChRs, the target site of neonicotinoid insecticides. Nevertheless, this residue position in α5 is not conserved among insects. CONCLUSIONS Neonicotinoid and pyrethroid resistance in laboratory-selected E. heros is associated with a potential metabolic resistance mechanism by the overexpression of proteins commonly involved in the three phases of xenobiotic metabolism. Together these findings provide insight into the potential basis of resistance in E. heros and will inform the development and implementation of resistance management strategies against this important pest. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Ewerton C Lira
- Department of Entomology and Acarology, Luiz de Queiroz College of Agriculture (Esalq), University of São Paulo (USP), Piracicaba, São Paulo, Brazil
| | - Antonio Rb Nascimento
- Department of Entomology and Acarology, Luiz de Queiroz College of Agriculture (Esalq), University of São Paulo (USP), Piracicaba, São Paulo, Brazil
| | - Chris Bass
- Science and Engineering Research Support Facility (SERSF), University of Exeter, Cornwall, UK
| | - Celso Omoto
- Department of Entomology and Acarology, Luiz de Queiroz College of Agriculture (Esalq), University of São Paulo (USP), Piracicaba, São Paulo, Brazil
| | - Fernando L Cônsoli
- Department of Entomology and Acarology, Luiz de Queiroz College of Agriculture (Esalq), University of São Paulo (USP), Piracicaba, São Paulo, Brazil
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6
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Thia JA, Umina PA, Hoffmann AA. Ace and ace-like genes of invasive redlegged earth mite: copy number variation, target-site mutations, and their associations with organophosphate insensitivity. Pest Manag Sci 2023; 79:4219-4230. [PMID: 37332098 DOI: 10.1002/ps.7619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 06/13/2023] [Accepted: 06/19/2023] [Indexed: 06/20/2023]
Abstract
BACKGROUND Invasive Australian populations of redlegged earth mite, Halotydeus destructor (Tucker), are evolving increasing organophosphate resistance. In addition to the canonical ace gene, the target gene of organophosphates, the H. destructor genome contains many radiated ace-like genes that vary in copy number and amino acid sequence. In this work, we characterise copy number and target-site mutation variation at the canonical ace and ace-like genes and test for potential associations with organophosphate insensitivity. This was achieved through comparisons of whole-genome pool-seq data from alive and dead mites following organophosphate exposure. RESULTS A combination of increased copy number and target-site mutations at the canonical ace was associated with organophosphate insensitivity in H. destructor. Resistant populations were segregating for G119S, A201S, F331Y at the canonical ace. A subset of populations also had copy numbers of canonical ace > 2, which potentially helps overexpress proteins carrying these target-site mutations. Haplotypes possessing different copy numbers and target-site mutations of the canonical ace gene may be under selection across H. destructor populations. We also detected some evidence that increases in copy number of radiated ace-like genes are associated with organophosphate insensitivity, which might suggest potential roles in sequestration or breakdown of organophosphates. CONCLUSION Different combinations of target-site mutations and (or) copy number variation in the canonical ace and ace-like genes may provide non-convergent ways for H. destructor to respond to organophosphate selection. However, these changes may only play a partial role in organophosphate insensitivity, which appears to have a polygenic architecture. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Joshua A Thia
- Bio21 Institute, School of BioSciences, The University of Melbourne, Melbourne, VIC, Australia
| | - Paul A Umina
- Bio21 Institute, School of BioSciences, The University of Melbourne, Melbourne, VIC, Australia
- Cesar Australia, Brunswick, VIC, Australia
| | - Ary A Hoffmann
- Bio21 Institute, School of BioSciences, The University of Melbourne, Melbourne, VIC, Australia
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Zhu X, Liu F, Yuchi Z, Yang X, Shakeel M. Editorial: Physiological events associated with pesticide-resistance. Front Physiol 2023; 14:1286971. [PMID: 37920801 PMCID: PMC10619725 DOI: 10.3389/fphys.2023.1286971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 09/27/2023] [Indexed: 11/04/2023] Open
Affiliation(s)
- Xun Zhu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Feng Liu
- Institute of Infectious Disease, Shenzhen Bay Laboratory, Shenzhen, China
| | - Zhiguang Yuchi
- Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, Collaborative Innovation Center of Chemical Science and Engineering, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, China
| | - Xin Yang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Muhammad Shakeel
- Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province, College of Plant Protection, South China Agricultural University, Guangzhou, China
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8
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Wang Z, Zhang S, Liu Z, Chang Z, Hu H. Gut Bacteria Promote Phosphine Susceptibility of Tribolium castaneum by Aggravating Oxidative Stress and Fitness Costs. Insects 2023; 14:815. [PMID: 37887827 PMCID: PMC10607109 DOI: 10.3390/insects14100815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 10/09/2023] [Accepted: 10/13/2023] [Indexed: 10/28/2023]
Abstract
Knowledge about resistance mechanisms can provide ideas for pesticide resistance management. Although several studies have unveiled the positive or negative impacts of gut microbes on host pesticide resistance, minimal research is available regarding the association between gut microbes and host phosphine resistance. To explore the influence of gut bacteria on host phosphine susceptibility and its molecular basis, mortality, fitness, redox responses, and immune responses of adult Tribolium castaneum were determined when it was challenged by phosphine exposure and/or gut bacteria inoculation. Five cultivable gut bacteria were excised from a population of phosphine-resistant T. castaneum. Among them, only Enterococcus sp. inoculation significantly promoted host susceptibility to phosphine, while inoculation of any other gut bacteria had no significant effect on host phosphine susceptibility. Furthermore, when T. castaneum was exposed to phosphine, Enterococcus sp. inoculation decreased the female fecundity, promoted host oxidative stress, and suppressed the expression and activity of host superoxide dismutase, catalase, and peroxidase. In the absence of phosphine, Enterococcus sp. inoculation also elicited overactive immune responses in T. castaneum, including the immune deficiency and Toll signaling pathways and the dual oxidase-reactive oxygen species system. These results indicate that Enterococcus sp. likely promotes host phosphine susceptibility by aggravating oxidative stress and fitness costs.
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Affiliation(s)
- Zhengyan Wang
- School of Food and Strategic Reserves, Henan University of Technology, Zhengzhou 450001, China; (S.Z.); (Z.L.); (Z.C.); (H.H.)
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9
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Abendroth JA, Moural TW, Wei H, Zhu F. Roles of insect odorant binding proteins in communication and xenobiotic adaptation. Front Insect Sci 2023; 3:1274197. [PMID: 38469469 PMCID: PMC10926425 DOI: 10.3389/finsc.2023.1274197] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Accepted: 09/15/2023] [Indexed: 03/13/2024]
Abstract
Odorant binding proteins (OBPs) are small water-soluble proteins mainly associated with olfaction, facilitating the transport of odorant molecules to their relevant receptors in the sensillum lymph. While traditionally considered essential for olfaction, recent research has revealed that OBPs are engaged in a diverse range of physiological functions in modulating chemical communication and defense. Over the past 10 years, emerging evidence suggests that OBPs play vital roles in purifying the perireceptor space from unwanted xenobiotics including plant volatiles and pesticides, potentially facilitating xenobiotic adaptation, such as host location, adaptation, and pesticide resistance. This multifunctionality can be attributed, in part, to their structural variability and effectiveness in transporting, sequestering, and concealing numerous hydrophobic molecules. Here, we firstly overviewed the classification and structural properties of OBPs in diverse insect orders. Subsequently, we discussed the myriad of functional roles of insect OBPs in communication and their adaptation to xenobiotics. By synthesizing the current knowledge in this field, our review paper contributes to a comprehensive understanding of the significance of insect OBPs in chemical ecology, xenobiotic adaptation, paving the way for future research in this fascinating area of study.
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Affiliation(s)
- James A. Abendroth
- Department of Entomology, Pennsylvania State University, University Park, PA, United States
| | - Timothy W. Moural
- Department of Entomology, Pennsylvania State University, University Park, PA, United States
| | - Hongshuang Wei
- Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Fang Zhu
- Department of Entomology, Pennsylvania State University, University Park, PA, United States
- Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA, United States
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Zhang L, Li Z, Peng Y, Liang X, Wilson K, Chipabika G, Karangwa P, Uzayisenga B, Mensah BA, Kachigamba DL, Xiao Y. Global genomic signature reveals the evolution of fall armyworm in the Eastern hemisphere. Mol Ecol 2023; 32:5463-5478. [PMID: 37638537 DOI: 10.1111/mec.17117] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Accepted: 08/14/2023] [Indexed: 08/29/2023]
Abstract
The major plant pest fall armyworm (FAW), Spodoptera frugiperda, is native to the Americas and has colonized Africa and Asia within the Eastern hemisphere since 2016, causing severe damage to multiple agricultural crop species. However, the genetic origin of these invasive populations requires more in-depth exploration. We analysed genetic variation across the genomes of 280 FAW individuals from both the Eastern hemisphere and the Americas. The global range-wide genetic structure of FAW shows that the FAW in America has experienced deep differentiation, largely consistent with the Z-chromosomal Tpi haplotypes commonly used to differentiate 'corn-strain' and 'rice-strain' populations. The invasive populations from Africa and Asia are different from the American ones and have a relatively homogeneous population structure, consistent with the common origin and recent spreading from Africa to Asia. Our analyses suggest that north- and central American 'corn-strain' FAW are the most likely sources of the invasion into the Eastern hemisphere. Furthermore, evidence based on genomic, transcriptomic and mitochondrial haplotype network analyses indicates an earlier, independent introduction of FAW into Africa, with subsequent migration into the recent invasive population.
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Affiliation(s)
- Lei Zhang
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
| | - Zaiyuan Li
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
| | - Yan Peng
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Xinyue Liang
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
| | - Kenneth Wilson
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
- Lancaster Environment Centre, Lancaster University, Lancaster, UK
| | | | - Patrick Karangwa
- Rwanda Agriculture and Animal Resources Development Board, Rubona, Rwanda
| | | | | | | | - Yutao Xiao
- Shenzhen Branch, Guangdong Laboratory for Lingnan Modern Agriculture, Genome Analysis Laboratory of the Ministry of Agriculture and Rural Affairs, Agricultural Genomics Institute at Shenzhen, Chinese Academy of Agricultural Sciences, Shenzhen, China
- Lancaster Environment Centre, Lancaster University, Lancaster, UK
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Xue WX, Sun JT, Witters J, Vandenhole M, Dermauw W, Bajda SA, Simma EA, Wybouw N, Villacis-Perez E, Van Leeuwen T. Incomplete reproductive barriers and genomic differentiation impact the spread of resistance mutations between green- and red-colour morphs of a cosmopolitan mite pest. Mol Ecol 2023. [PMID: 37211626 DOI: 10.1111/mec.16994] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 03/10/2023] [Accepted: 05/05/2023] [Indexed: 05/23/2023]
Abstract
Pesticide resistance represents a clear and trackable case of adaptive evolution with a strong societal impact. Understanding the factors associated with the evolution and spread of resistance is imperative to develop sustainable crop management strategies. The two-spotted spider mite Tetranychus urticae, a major crop pest with worldwide distribution and a polyphagous lifestyle, has evolved resistance to most classes of pesticides. Tetranychus urticae exists as either a green- or a red-coloured morph. However, the extent of genetic divergence and reproductive compatibility vary across populations of these colour morphs, complicating their taxonomic resolution at the species level. Here, we studied patterns of genetic differentiation and barriers to gene flow within and between morphs of T. urticae in order to understand the factors that influence the spread of resistance mutations across its populations. We derived multiple iso-female lines from Tetranychus populations collected from agricultural crops. We generated genomic and morphological data, characterized their bacterial communities and performed controlled crosses. Despite morphological similarities, we found large genomic differentiation between the morphs. This pattern was reflected in the incomplete, but strong postzygotic incompatibility in crosses between colour morphs, while crosses within morphs from different geographical locations were largely compatible. In addition, our results suggest recent/on-going gene flow between green-coloured T. urticae and T. turkestani. By screening the sequences of 10 resistance genes, we found evidence for multiple independent origins and for single evolutionary origins of target-site resistance mutations. Our results indicate that target-site mutations mostly evolve independently in populations on different geographical locations, and that these mutations can spread due to incomplete barriers to gene flow within and between populations.
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Affiliation(s)
- Wen-Xin Xue
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Jing-Tao Sun
- Department of Entomology, Nanjing Agricultural University, Nanjing, China
| | - Johan Witters
- Flanders Research Institute for Agriculture, Fisheries and Food (ILVO), Plant Sciences Unit, Merelbeke, Belgium
| | - Marilou Vandenhole
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Wannes Dermauw
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
- Flanders Research Institute for Agriculture, Fisheries and Food (ILVO), Plant Sciences Unit, Merelbeke, Belgium
| | - Sabina A Bajda
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Eba A Simma
- Department of Biology, College of Natural Sciences, Jimma University, Jimma, Ethiopia
| | - Nicky Wybouw
- Terrestrial Ecology Unit, Department of Biology, Faculty of Sciences, Ghent University, Ghent, Belgium
| | - Ernesto Villacis-Perez
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Thomas Van Leeuwen
- Laboratory of Agrozoology, Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
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12
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Shi P, Shen XJ, Chen JC, Zhang YJ, Cao LJ, Pang BS, Liu LH, Zhang MM, Hoffmann AA, Wei SJ. KASP genotyping and semi-quantitation of G275E mutation in the α6 subunit of Thrips palmi nAChR gene conferring spinetoram resistance. Pest Manag Sci 2023; 79:1777-1782. [PMID: 36627758 DOI: 10.1002/ps.7353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 12/19/2022] [Accepted: 01/11/2023] [Indexed: 06/17/2023]
Abstract
BACKGROUND Pesticide resistance is a long-standing and growing problem in the chemical control of invertebrate pests. Molecular diagnostic methods can facilitate pesticide resistance management by accurately and efficiently detecting resistant mutations and their frequency. In this study, the kompetitive allele specific PCR (KASP) approach, a technology for high-throughput single nucleotide polymorphism (SNP) genotyping, is validated as a useful method for characterizing genotypes at a pesticide-resistance locus for the first time. We focus on the spinetoram resistance mutation of G275E in the nicotinic acetylcholine receptor alpha 6 (nAChR α6) subunit gene of Thrips palmi. RESULTS Of the 341 individuals of Thrips palmi tested, 98.24% were successfully genotyped, with 100% concordance with Sanger sequencing results. We then quantitatively mixed genomic DNA of known genotypes to establish 21 DNA mixtures with a resistant allele frequency ranging from 0 to 100% at steps of 5%. The linear discriminant analysis (LDA) showed that 75.8% of original grouped cases were correctly classified; six groups had no overlap in membership (resistant allele frequency: 0%, 5%, 10-75%, 80-85%, 90-95%, and 100%). When we chose 11 pooled samples with 10% steps for LDA, 84.4% of original grouped cases were correctly classified; seven groups had no overlap in membership (0%, 10%, 20-30%, 40-70%, 80%, 90%, 100%). The results indicated that KASP applied to pooled samples may provide a semi-quantitative estimate of resistance. CONCLUSIONS Our study points to the suitability of KASP for high-throughput genotyping of genotypes affecting pesticide resistance and semi-quantitative assessments of resistance allele frequencies in populations. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Pan Shi
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
- Department of Entomology and MOA Key Lab of Pest Monitoring and Green Management, College of Plant Protection, China Agricultural University, Beijing, China
| | - Xiu-Jing Shen
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Jin-Cui Chen
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Yu-Jie Zhang
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Li-Jun Cao
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Bin-Shuang Pang
- Beijing Engineering and Technique Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Li-Hua Liu
- Beijing Engineering and Technique Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Ming-Ming Zhang
- Beijing Engineering and Technique Research Center for Hybrid Wheat, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
| | - Ary Anthony Hoffmann
- School of BioSciences, Bio21 Institute, University of Melbourne, Parkville, Australia
| | - Shu-Jun Wei
- Institute of Plant Protection, Beijing Academy of Agriculture and Forestry Sciences, Beijing, China
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13
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Cruse C, Moural TW, Zhu F. Dynamic Roles of Insect Carboxyl/Cholinesterases in Chemical Adaptation. Insects 2023; 14:194. [PMID: 36835763 PMCID: PMC9958613 DOI: 10.3390/insects14020194] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 02/12/2023] [Accepted: 02/14/2023] [Indexed: 06/18/2023]
Abstract
Insects have evolved several intricate defense mechanisms to adapt to their chemical environment. Due to their versatile capabilities in hydrolytic biotransformation, insect carboxyl/cholinesterases (CCEs) play vital roles in the development of pesticide resistance, facilitating the adaptation of insects to their host plants, and manipulating insect behaviors through the olfaction system. CCEs confer insecticide resistance through the mechanisms of qualitative or quantitative changes of CCE-mediated enhanced metabolism or target-site insensitivity, and may contribute to the host plant adaptation. CCEs represent the first odorant-degrading enzymes (ODEs) discovered to degrade insect pheromones and plant odors and remain the most promising ODE candidates. Here, we summarize insect CCE classification, currently characterized insect CCE protein structure characteristics, and the dynamic roles of insect CCEs in chemical adaptation.
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Affiliation(s)
- Casey Cruse
- Department of Entomology, Pennsylvania State University, University Park, State College, PA 16802, USA
| | - Timothy Walter Moural
- Department of Entomology, Pennsylvania State University, University Park, State College, PA 16802, USA
| | - Fang Zhu
- Department of Entomology, Pennsylvania State University, University Park, State College, PA 16802, USA
- Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, State College, PA 16802, USA
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14
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Parvizi E, Dhami MK, Yan J, McGaughran A. Population genomic insights into invasion success in a polyphagous agricultural pest, Halyomorpha halys. Mol Ecol 2023; 32:138-151. [PMID: 36261398 PMCID: PMC10099481 DOI: 10.1111/mec.16740] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 10/13/2022] [Accepted: 10/17/2022] [Indexed: 01/07/2023]
Abstract
Invasive species are increasingly threatening ecosystems and agriculture by rapidly expanding their range and adapting to environmental and human-imposed selective pressures. The genomic mechanisms that underlie such rapid changes remain unclear, especially for agriculturally important pests. Here, we used genome-wide polymorphisms derived from native, invasive, and intercepted samples and populations of the brown marmorated stink bug (BMSB), Halyomorpha halys, to gain insights into population genomics processes that have promoted the successful global invasion of this polyphagous pest. Our analysis demonstrated that BMSB exhibits spatial structure but admixture rates are high among introduced populations, resulting in similar levels of genomic diversity across native and introduced populations. These spatial genomic patterns suggest a complex invasion scenario, potentially with multiple bridgehead events, posing a challenge for accurately assigning BMSB incursions to their source using reduced-representation genomic data. By associating allele frequencies with the invasion status of BMSB populations, we found significantly differentiated single nucleotide polymorphisms (SNPs) located in close proximity to genes for insecticide resistance and olfaction. Comparing variations in allele frequencies among populations for outlier SNPs suggests that BMSB invasion success has probably evolved from standing genetic variation. In addition to being a major nuisance of households, BMSB has caused significant economic losses to agriculture in recent years and continues to expand its range. Despite no record of BMSB insecticide resistance to date, our results show high capacity for potential evolution of such traits, highlighting the need for future sustainable and targeted management strategies.
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Affiliation(s)
- Elahe Parvizi
- Te Aka Mātuatua/School of Science, University of Waikato, Hamilton, New Zealand
| | - Manpreet K Dhami
- Biocontrol and Molecular Ecology, Manaaki Whenua Landcare Research, Lincoln, New Zealand
| | - Juncong Yan
- Plant Health and Environment Laboratory, Ministry for Primary Industries, Auckland, New Zealand
| | - Angela McGaughran
- Te Aka Mātuatua/School of Science, University of Waikato, Hamilton, New Zealand
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15
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Roberts-McEwen TA, Deutsch EK, Mowery MA, Grinsted L. Group-Living Spider Cyrtophora citricola as a Potential Novel Biological Control Agent of the Tomato Pest Tuta absoluta. Insects 2022; 14:insects14010034. [PMID: 36661962 PMCID: PMC9864117 DOI: 10.3390/insects14010034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 12/09/2022] [Accepted: 12/23/2022] [Indexed: 05/12/2023]
Abstract
Group-living spiders may be uniquely suited for controlling flying insect pests, as their high tolerance for conspecifics and low levels of cannibalism result in large, predator dense capture webs. In laboratory settings, we tested the ability of the facultatively communal spider, Cyrtophora citricola, to control the tomato leafminer, Tuta absoluta; a major pest of tomato crops worldwide. We tested whether prey capture success was affected by spider body size, and whether prey capture differed among T. absoluta, flightless fruit flies (Drosophila hydei), and larger black soldier flies (Hermetia illucens). We found that larger spiders generally caught more prey, and that prey capture success was similar for T. absoluta and easily caught fruit flies, while black soldier flies were rarely caught. We further investigated the seasonal variations in web sizes in southern Spain, and found that pest control would be most effective in the tomato planting and growing season. Finally, we show that C. citricola in Spain have >50% infection rates of an egg predatory wasp, Philolema palanichamyi, which may need controlling to maintain pest control efficacy. These results suggest that using C. citricola as a biological control agent in an integrated pest management system could potentially facilitate a reduction of pesticide reliance in the future.
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Affiliation(s)
- Thomas A. Roberts-McEwen
- School of Biological Sciences, University of Portsmouth, King Henry Building, King Henry 1 Street, Portsmouth PO1 2DY, UK
- Correspondence: or
| | - Ella K. Deutsch
- School of Life Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, UK
| | - Monica A. Mowery
- Jacob Blaustein Institutes for Desert Research, Mitrani Department of Desert Ecology, Ben-Gurion University of the Negev, Midreshet Ben-Gurion 8499000, Israel
| | - Lena Grinsted
- School of Biological Sciences, University of Portsmouth, King Henry Building, King Henry 1 Street, Portsmouth PO1 2DY, UK
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16
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Koirala B K S, Moural T, Zhu F. Functional and Structural Diversity of Insect Glutathione S-transferases in Xenobiotic Adaptation. Int J Biol Sci 2022; 18:5713-5723. [PMID: 36263171 PMCID: PMC9576527 DOI: 10.7150/ijbs.77141] [Citation(s) in RCA: 33] [Impact Index Per Article: 16.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 08/29/2022] [Indexed: 01/12/2023] Open
Abstract
As a superfamily of multifunctional enzymes that is mainly associated with xenobiotic adaptation, glutathione S-transferases (GSTs) facilitate insects' survival under chemical stresses in their environment. GSTs confer xenobiotic adaptation through direct metabolism or sequestration of xenobiotics, and/or indirectly by providing protection against oxidative stress induced by xenobiotic exposure. In this article, a comprehensive overview of current understanding on the versatile functions of insect GSTs in detoxifying chemical compounds is presented. The diverse structures of different classes of insect GSTs, specifically the spatial localization and composition of their amino acid residues constituted in their active sites are also summarized. Recent availability of whole genome sequences of numerous insect species, accompanied by RNA interference, X-ray crystallography, enzyme kinetics and site-directed mutagenesis techniques have significantly enhanced our understanding of functional and structural diversity of insect GSTs.
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Affiliation(s)
- Sonu Koirala B K
- Department of Entomology, Pennsylvania State University, University Park, PA 16802, USA
| | - Timothy Moural
- Department of Entomology, Pennsylvania State University, University Park, PA 16802, USA
| | - Fang Zhu
- Department of Entomology, Pennsylvania State University, University Park, PA 16802, USA.,Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA 16802, USA.,✉ Corresponding author: Dr. Fang Zhu, Department of Entomology and Huck Institutes of the Life Sciences, Pennsylvania State University, University Park, PA 16802, USA. Phone: +1-814-863-4432; Fax: +1- 814-865-3048; E-mail:
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17
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Thia JA, Cheng X, Maino J, Umina PA, Hoffmann AA. Warmer temperatures reduce chemical tolerance in the redlegged earth mite (Halotydeus destructor), an invasive winter-active pest. Pest Manag Sci 2022; 78:3071-3079. [PMID: 35437918 PMCID: PMC9325430 DOI: 10.1002/ps.6933] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 02/06/2022] [Accepted: 04/18/2022] [Indexed: 05/24/2023]
Abstract
BACKGROUND Quantifying how chemical tolerance of pest arthropods varies with temperature is important for understanding the outcomes of chemical control, for measuring and monitoring resistance, and for predicting how pesticide resistance will evolve under future climate change. We studied the redlegged earth mite, Halotydeus destructor (Tucker), a winter-active invasive agricultural pest in Australia. Using a replicated block experiment, we tested the effect of different thermal conditions on the expression of chemical tolerance to a pyrethroid and two organophosphates. Our chemical bioassays were conducted on two redlegged earth mite populations: one possessed organophosphate resistance, whilst the other was susceptible to pesticides. Mites were first acclimated at cool (4 °C) and warm (14 °C) conditions and then exposed to pesticides in both cool (11 °C) and warm (18 °C) test conditions. RESULTS Warm test conditions generally reduced chemical tolerance to all pesticides relative to cool test conditions. Median lethal dose (LD50 ) values of mites tested under cool conditions were 1.12-3.57-fold greater than of mites tested under warm conditions. Acclimation had a variable and small impact on chemical responses. Thermal factors (ratio between test temperatures) were similar between populations for each active ingredient. Despite reduced chemical tolerances under warm test conditions for individual mite populations, resistance factors (ratio between resistant and susceptible mite populations) were relatively consistent. CONCLUSION Our data provides context for prior theoretical work demonstrating climatically constrained pesticide resistances in Australian redlegged earth mites. Estimates of temperature dependent toxicity measured in this study may be useful in parameterizing models of redlegged earth mite control under an increasingly warm and more variable climate. © 2022 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Joshua A Thia
- Bio21 Institute, School of BioSciencesUniversity of MelbourneParkvilleAustralia
| | - Xuan Cheng
- Bio21 Institute, School of BioSciencesUniversity of MelbourneParkvilleAustralia
| | | | - Paul A Umina
- Bio21 Institute, School of BioSciencesUniversity of MelbourneParkvilleAustralia
- Cesar AustraliaBrunswickAustralia
| | - Ary A Hoffmann
- Bio21 Institute, School of BioSciencesUniversity of MelbourneParkvilleAustralia
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18
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Zhang Y, Xu D, Zhang Y, Wu Q, Xie W, Guo Z, Wang S. Frequencies and mechanisms of pesticide resistance in Tetranychus urticae field populations in China. Insect Sci 2022; 29:827-839. [PMID: 34309214 DOI: 10.1111/1744-7917.12957] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 06/09/2021] [Accepted: 07/14/2021] [Indexed: 06/13/2023]
Abstract
The two-spotted spider mite Tetranychus urticate is an important agricultural pest worldwide. It is extremely polyphagous and has developed resistance to many pesticides. Here, we assessed the pesticide resistance of seven field populations of T. urticae in China, their target site mutations and the activities of their detoxification enzymes. The results showed that abamectin and the traditional pesticides pyridaben, profenofos and bifenthrin had higher resistance or lower toxicity than more recently developed pesticides including chlorfenapyr, spinetoram, cyflumetofen, cyenopyrafen, bifenazate and B-azolemiteacrylic. The frequency of point mutations related to abamectin resistance, G314D in the glutamate-gated chloride channel 1 (GluCl1) and G326E in GluCl3, ranged 47%-70% and 0%-97%, respectively. The frequency of point mutations in A1215D and F1538I of the voltage-gated sodium channel gene (VGSC), which may increase resistance to pyrethroids, ranged 88%-100% and 10%-100%, respectively. For target sites related to organophosphate resistance, mutation frequencies ranged 25%-92% for G119S and 0%-23% for A201S in the acetycholinesterase gene (Ace). Mutation G126S in the bifenazate resistance-related cytochrome b gene (Cytb) was observed in three of the seven T. urticae populations. Higher activities of detoxification enzymes (P450, GST, CarEs and UGTs) were observed in two T. urticae populations, with significant difference in the XY-SX population. These results provide useful information on the status of pesticide resistance of T. urticae in China and suggest that T. urticae field populations may have multiple resistance mechanisms.
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Affiliation(s)
- Yan Zhang
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Dandan Xu
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Youjun Zhang
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Qingjun Wu
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Wen Xie
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Zhaojiang Guo
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
| | - Shaoli Wang
- Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China
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19
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Brans KI, Almeida RA, Fajgenblat M. Genetic differentiation in pesticide resistance between urban and rural populations of a nontarget freshwater keystone interactor, Daphnia magna. Evol Appl 2021; 14:2541-2552. [PMID: 34745342 PMCID: PMC8549624 DOI: 10.1111/eva.13293] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 07/01/2021] [Accepted: 08/03/2021] [Indexed: 01/02/2023] Open
Abstract
There is growing evidence that urbanization drives adaptive evolution in response to thermal gradients. One such example is documented in the water flea Daphnia magna. However, organisms residing in urban lentic ecosystems are increasingly exposed to chemical pollutants such as pesticides through run-off and aerial transportation. The extent to which urbanization drives the evolution of pesticide resistance in aquatic organisms and whether this is impacted by warming and thermal adaptation remains limitedly studied. We performed a common garden rearing experiment using multiple clonal lineages originating from five replicated urban and rural D. magna populations, in which we implemented an acute toxicity test exposing neonates (<24h) to either a solvent control or the organophosphate pesticide chlorpyrifos. Pesticide exposures were performed at two temperatures (20°C vs. 24°C) to test for temperature-associated differences in urbanization-driven evolved pesticide resistance. We identified a strong overall effect of pesticide exposure on Daphnia survival probability (-72.8 percentage points). However, urban Daphnia genotypes showed higher survival probabilities compared to rural ones in the presence of chlorpyrifos (+29.7 percentage points). Our experiment did not reveal strong temperature x pesticide or temperature x pesticide x urbanization background effects on survival probability. The here observed evolution of resistance to an organophosphate pesticide is a first indication Daphnia likely also adapts to pesticide pollution in urban areas. Increased pesticide resistance could facilitate their population persistence in urban ponds, and feed back to ecosystem functions, such as top-down control of algae. In addition, adaptive evolution of nontarget organisms to pest control strategies and occupational pesticide use may modulate how pesticide applications affect genetic and species diversity in urban areas.
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Affiliation(s)
- Kristien I. Brans
- Laboratory of Aquatic Ecology, Evolution, and ConservationKU LeuvenLeuvenBelgium
| | - Rafaela A. Almeida
- Laboratory of Aquatic Ecology, Evolution, and ConservationKU LeuvenLeuvenBelgium
| | - Maxime Fajgenblat
- Laboratory of Aquatic Ecology, Evolution, and ConservationKU LeuvenLeuvenBelgium
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20
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Dassanayake MK, Chong CH, Khoo TJ, Figiel A, Szumny A, Choo CM. Synergistic Field Crop Pest Management Properties of Plant-Derived Essential Oils in Combination with Synthetic Pesticides and Bioactive Molecules: A Review. Foods 2021; 10:2016. [PMID: 34574123 PMCID: PMC8467659 DOI: 10.3390/foods10092016] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 08/19/2021] [Accepted: 08/23/2021] [Indexed: 11/29/2022] Open
Abstract
The management of insect pests and fungal diseases that cause damage to crops has become challenging due to the rise of pesticide and fungicide resistance. The recent developments in studies related to plant-derived essential oil products has led to the discovery of a range of phytochemicals with the potential to combat pesticide and fungicide resistance. This review paper summarizes and interprets the findings of experimental work based on plant-based essential oils in combination with existing pesticidal and fungicidal agents and novel bioactive natural and synthetic molecules against the insect pests and fungi responsible for the damage of crops. The insect mortality rate and fractional inhibitory concentration were used to evaluate the insecticidal and fungicidal activities of essential oil synergists against crop-associated pests. A number of studies have revealed that plant-derived essential oils are capable of enhancing the insect mortality rate and reducing the minimum inhibitory concentration of commercially available pesticides, fungicides and other bioactive molecules. Considering these facts, plant-derived essential oils represent a valuable and novel source of bioactive compounds with potent synergism to modulate crop-associated insect pests and phytopathogenic fungi.
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Affiliation(s)
- Mackingsley Kushan Dassanayake
- School of Pharmacy, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Malaysia; (M.K.D.); (T.-J.K.)
| | - Chien Hwa Chong
- Department of Chemical and Environmental Engineering, Faculty of Science and Engineering, University of Nottingham, Jalan Broga, Semenyih 43500, Malaysia
| | - Teng-Jin Khoo
- School of Pharmacy, Faculty of Science and Engineering, University of Nottingham Malaysia, Jalan Broga, Semenyih 43500, Malaysia; (M.K.D.); (T.-J.K.)
| | - Adam Figiel
- Institute of Agricultural Engineering, Wrocław University of Environmental and Life Sciences, Chełmońskiego 37a, 51-630 Wrocław, Poland;
| | - Antoni Szumny
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland;
| | - Chee Ming Choo
- Centre for Water Research, Faculty of Engineering, Built Environment and Information Technology, SEGi University Kota Damansara, Petaling Jaya 47810, Malaysia;
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21
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Burtis JC, Poggi JD, Payne B, Campbell SR, Harrington LC. Susceptibility of Ixodes scapularis (Acari: Ixodidae) to Permethrin Under a Long-Term 4-Poster Deer Treatment Area on Shelter Island, NY. J Med Entomol 2021; 58:1966-1969. [PMID: 33822135 PMCID: PMC10601398 DOI: 10.1093/jme/tjab054] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Indexed: 06/12/2023]
Abstract
Pesticide resistance in medically significant disease vectors can negatively impact the efficacy of control efforts. Resistance research on ticks has focused primarily on species of veterinary significance that experience relatively high degrees of control pressure. Resistance in tick vectors of medical significance has received little attention, in part because area-wide pesticide applications are not used to control these generalist tick species. One of the few effective methods currently used for area-wide control of medically important ticks, including Ixodes scapularis Say (Acari: Ixodidae), is deployment of 4-poster devices. Deer self-apply a topical acaricide (permethrin) while feeding on corn from the devices. A 4-poster program using permethrin has been deployed on Shelter Island, NY to control I. scapularis populations since 2008. We collected engorged female ticks from deer in this management area and a location in the Mid-Hudson River Valley, NY without area-wide tick control. Larvae were reared from egg masses and their susceptibility to permethrin was tested. Larvae originating from a long-term laboratory colony were used as a susceptible baseline for comparison. Compared against the laboratory colony, resistance ratios at LC-50 for Shelter Island and Hudson Valley I. scapularis were 1.87 and 1.51, respectively. The susceptibilities of the field populations to permethrin were significantly lower than that of the colony ticks. We provide the first data using the larval packet test to establish baseline susceptibility for I. scapularis to permethrin along with information relevant to understanding resistance emergence in tick populations under sustained control pressure from 4-poster devices.
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Affiliation(s)
- James C. Burtis
- Department of Entomology, Cornell University, Ithaca, NY 14853, USA
- Division of Vector-Borne Disease, Centers for Disease Control and Prevention, Fort Collins, CO 80521, USA
| | - Joseph D. Poggi
- Department of Entomology, Cornell University, Ithaca, NY 14853, USA
| | - Beau Payne
- Shelter Island Police Department, Shelter Island, NY 11964, USA
| | - Scott R. Campbell
- Suffolk County Department of Health Services, Yaphank, NY 11980, USA
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22
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Abstract
Adaptive introgression-the flow of adaptive genetic variation between species or populations-has attracted significant interest in recent years and it has been implicated in a number of cases of adaptation, from pesticide resistance and immunity, to local adaptation. Despite this, methods for identification of adaptive introgression from population genomic data are lacking. Here, we present Ancestry_HMM-S, a hidden Markov model-based method for identifying genes undergoing adaptive introgression and quantifying the strength of selection acting on them. Through extensive validation, we show that this method performs well on moderately sized data sets for realistic population and selection parameters. We apply Ancestry_HMM-S to a data set of an admixed Drosophila melanogaster population from South Africa and we identify 17 loci which show signatures of adaptive introgression, four of which have previously been shown to confer resistance to insecticides. Ancestry_HMM-S provides a powerful method for inferring adaptive introgression in data sets that are typically collected when studying admixed populations. This method will enable powerful insights into the genetic consequences of admixture across diverse populations. Ancestry_HMM-S can be downloaded from https://github.com/jesvedberg/Ancestry_HMM-S/.
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Affiliation(s)
- Jesper Svedberg
- Department of Biomolecular Engineering, Genomics Institute, UC Santa Cruz, Santa Cruz, CA, USA
| | - Vladimir Shchur
- National Research University Higher School of Economics, Moscow, Russian Federation
| | - Solomon Reinman
- Department of Biomolecular Engineering, Genomics Institute, UC Santa Cruz, Santa Cruz, CA, USA
| | - Rasmus Nielsen
- National Research University Higher School of Economics, Moscow, Russian Federation
- Department of Integrative Biology and Department of Statistics, UC Berkeley, Berkeley, CA, USA
- Center for GeoGenetics, Globe Institute, University of Copenhagen, Copenhagen, Denmark
| | - Russell Corbett-Detig
- Department of Biomolecular Engineering, Genomics Institute, UC Santa Cruz, Santa Cruz, CA, USA
- National Research University Higher School of Economics, Moscow, Russian Federation
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23
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Li F, Venthur H, Wang S, Homem RA, Zhou JJ. Evidence for the Involvement of the Chemosensory Protein AgosCSP5 in Resistance to Insecticides in the Cotton Aphid, Aphis gossypii. Insects 2021; 12:335. [PMID: 33918564 DOI: 10.3390/insects12040335] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 04/03/2021] [Accepted: 04/04/2021] [Indexed: 11/30/2022]
Abstract
Simple Summary Insect chemosensory proteins (CSPs) are potential targets for insect pest control strategies and are proposed to function in insect chemoreception, because they play a role in crop host location by binding and transporting odorant molecules. They are also thought to have other functions, for example, in tissue regeneration and in insecticide resistance, because they also express in nonolfactory tissues and are capable of binding insecticides. However, there are few reports that provide direct evidence for this proposal. In this study, we discovered gene gain-and-loss among aphid populations, possibly associated with different insecticide resistance, and then identified and cloned a CSP gene responsive to insecticide treatments. The introduction of such gene in Drosophila fruit flies made the transgenic flies less sensitive to the treatment of different insecticides. Our study advances the research of insect CSP functions and offers valuable new information to target CSPs for pest management. Abstract It has been speculated that insect chemosensory proteins (CSPs) may have additional roles beyond olfaction. In this study, the phylogenetic and genomic analyses of the CSPs of the cotton aphid, Aphis gossypii, revealed the presence of gene gain-and-loss among different aphid field populations. Differential expressions of eight CSP genes were demonstrated after treatments with insecticides of different modes of action. The expression of AgosCSP5 was significantly upregulated by the insecticide treatments in a dose-dependent manner. The Drosophila flies overexpressing AgosCSP5 were significantly less susceptible to the insecticides, omethoate, imidacloprid and cypermethrin but not to deltamethrin and tau-fluvalinate, compared with control flies. The transgenic Drosophila flies exhibited an LC50 resistance ratio of 2.6 to omethoate, compared with control flies. Likewise, the mortality of the transgenic flies to imidacloprid and cypermethrin was significantly lower than that of the control flies (p < 0.01). Homology modelling, molecular docking and dynamic simulation supported the interactions and revealed a higher stability of AgosCSP5/insecticide complexes than AgosCSP5/semiochemical complexes. Our study demonstrates for first time the in vivo evidence for the involvement of CSP genes in insecticide resistance of crop insect pests and provides new insights of the newly discovered CSP-mediated insect resistance mechanism to insecticides.
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Renault D, Colinet H. Differences in the Susceptibility to Commercial Insecticides among Populations of the Lesser Mealworm Alphitobius diaperinus Collected from Poultry Houses in France. Insects 2021; 12:309. [PMID: 33807353 DOI: 10.3390/insects12040309] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 03/21/2021] [Accepted: 03/30/2021] [Indexed: 11/17/2022]
Abstract
Simple Summary The lesser mealworm Alphitobius diaperinus is a major pest from poultry houses worldwide. There was suspicion that populations of A. diaperinus had developed resistance to insecticides in poultry farms in France. Here, we evaluate the insecticide susceptibility of adult A. diaperinus from ten populations sampled from different poultry farms. The insects were exposed to four commercial insecticides: two pyrethroids, one pyrethroid/neonicotinoid and one organophosphate. Our results strongly suggest the occurrence of resistance to pyrethroid-based formulations in some farm populations from Brittany (France). Abstract The control of insect pests often relies on the recurrent application of insecticides. This is the case for the lesser mealworm, Alphitobius diaperinus, an invasive beetle infesting poultry farms. There is evidence that A. diaperinus can develop resistance to several insecticides. Evaluation of such resistance has never been conducted in France, despite the beetle’s presence since the 1970s. We assess insecticide susceptibility in 10 populations from French poultry farms and compare patterns with two susceptible populations. Adults are subjected to short-term exposures (4 h) to four commercial insecticides and their recovery is assessed. Temporal survival also is scored during constant exposures for seven days. Clear-cut differences among the farm populations are found. Except for three populations that have patterns similar to those of the two susceptible populations, all the other farm populations have a much greater capacity to recover and survive insecticide exposures, especially to pyrethroid-based formulations. Three populations in particular even exhibit clear signs of resistance to pyrethroids, with median lethal times more than 10-fold superior to values of the susceptible population. No insect in any population recovers from the pirimiphos-methyl exposure, and all beetles are apparently dead after 15 h. Our results demonstrate the existence of resistant populations to pyrethroids in Brittany France.
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Burtis JC, Poggi JD, McMillan JR, Crans SC, Campbell SR, Isenberg A, Pulver J, Casey P, White K, Zondag C, Badger JR, Berger R, Betz J, Giordano S, Kawalkowski M, Petersen JL, Williams G, Andreadis TG, Armstrong PM, Harrington LC. NEVBD Pesticide Resistance Monitoring Network: Establishing a Centralized Network to Increase Regional Capacity for Pesticide Resistance Detection and Monitoring. J Med Entomol 2021; 58:787-797. [PMID: 33128057 DOI: 10.1093/jme/tjaa236] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Indexed: 06/11/2023]
Abstract
Pesticide resistance in arthropod vectors of disease agents is a growing issue globally. Despite the importance of resistance monitoring to inform mosquito control programs, no regional monitoring programs exist in the United States. The Northeastern Regional Center for Excellence in Vector-Borne Diseases (NEVBD) is a consortium of researchers and public health practitioners with a primary goal of supporting regional vector control activities. NEVBD initiated a pesticide resistance monitoring program to detect resistant mosquito populations throughout the northeastern United States. A regionwide survey was distributed to vector control agencies to determine needs and refine program development and in response, a specimen submission system was established, allowing agencies to submit Culex pipiens (L.) (Diptera:Culicidae) and Aedes albopictus (Skuse) (Diptera: Culicidae) for pesticide resistance testing. NEVBD also established larvicide resistance diagnostics for Bacillus thuringiensis israelensis (Bti) and methoprene. Additional diagnostics were developed for Cx. pipiens resistance to Lysinibacillus sphaericus. We received 58 survey responses, representing at least one agency from each of the 13 northeastern U.S. states. Results indicated that larvicides were deployed more frequently than adulticides, but rarely paired with resistance monitoring. Over 18,000 mosquitoes were tested from six states. Widespread low-level (1 × LC-99) methoprene resistance was detected in Cx. pipiens, but not in Ae. albopictus. No resistance to Bti or L. sphaericus was detected. Resistance to pyrethroids was detected in many locations for both species. Our results highlight the need for increased pesticide resistance testing in the United States and we provide guidance for building a centralized pesticide resistance testing program.
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Affiliation(s)
- James C Burtis
- Department of Entomology, Cornell University, Ithaca, NY
| | - Joseph D Poggi
- Department of Entomology, Cornell University, Ithaca, NY
| | | | - Scott C Crans
- NJDEP Office of Mosquito Control Coordination, Trenton, NJ
| | | | - Amy Isenberg
- Rockland County Department of Health, Pomona, NY
| | | | - Patti Casey
- Vermont Agency of Agriculture, Food & Markets, Montpelier, VT
| | | | - Craig Zondag
- Lemon Fair Insect Control District, Weybridge, VT
| | - John R Badger
- Delaware Division of Fish and Wildlife, Mosquito Control Section, Milford, DE
| | - Russell Berger
- Morris County Division of Mosquito Control, Morristown, NJ
| | - John Betz
- Department of Public Works, Cumberland County Mosquito Control, Bridgeton, NJ 08302
| | | | | | - John L Petersen
- Center for Vector Biology, Rutgers University, New Brunswick, NJ
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Uesugi R, Jouraku A, Sukonthabhirom Na Pattalung S, Hinomoto N, Kuwazaki S, Kanamori H, Katayose Y, Sonoda S. Origin, selection, and spread of diamide insecticide resistance allele in field populations of diamondback moth in east and southeast Asia. Pest Manag Sci 2021; 77:313-324. [PMID: 33411414 DOI: 10.1002/ps.6020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 07/21/2020] [Accepted: 07/22/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND The investigation of molecular mechanisms and evolution of resistance to insecticides is an ongoing challenge, as researchers must provide guidance to manage the resistance to achieve sustainable production in agriculture. Predicting, monitoring, and managing insecticide resistance requires information on the origins, selection, and spread of resistance genes. The resistance of Plutella xylostella (L.) against diamide insecticides is becoming an increasingly severe problem in east and southeast Asia. In this study, the evolution of resistance was investigated using a resistance allele [ryanodine receptor (RyR); G4946E mutation] and its flanking regions, as well as mitochondrial cytochrome c oxidase subunit I (mtCOI). RESULTS The sequences of the flanking region of the G4946E and mtCOI suggested that the G4946E mutation has a key role in resistance. Furthermore, the G4946E mutation has multiple origins, and congenic resistant mutations have spread across east and southeast Asia, despite substantial geographical barriers. In addition, the susceptibility of field populations partially recovered during winter, based on the observed decrease in the G4946E (resistant allele) frequency. Finally, the resistance level indexed by the frequency of the E4946 allele was significantly lower in non-overwintering regions than in overwintering regions. CONCLUSION The information of the present study is useful to monitor resistance using molecular markers and to develop strategies to delay the evolution of diamide resistance.
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Affiliation(s)
- Ryuji Uesugi
- Division of Agro-Environment Research, Tohoku Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Iwate, Japan
| | - Akiya Jouraku
- Division of Applied Genetics, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Ibaraki, Japan
| | | | - Norihide Hinomoto
- Department of Applied Entomology and Zoology, Central Region Agricultural Research Center, National Agriculture and Food Research Organization (NARO), Ibaraki, Japan
| | - Seigo Kuwazaki
- Division of Applied Genetics, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), Ibaraki, Japan
| | - Hiroyuki Kanamori
- Advanced Genomics Breeding Section, Institute of Crop Science, National Agriculture and Food Research Organization (NARO), Ibaraki, Japan
| | - Yuichi Katayose
- Advanced Genomics Breeding Section, Institute of Crop Science, National Agriculture and Food Research Organization (NARO), Ibaraki, Japan
| | - Shoji Sonoda
- Department of Agrobiology and Bioresources, School of Agriculture, Utsunomiya University, Tochigi, Japan
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Cui X, Wang C, Wang X, Li G, Liu Z, Wang H, Guo X, Xu B. Molecular Mechanism of the UDP-Glucuronosyltransferase 2B20-like Gene ( AccUGT2B20-like) in Pesticide Resistance of Apis cerana cerana. Front Genet 2020; 11:592595. [PMID: 33329739 PMCID: PMC7710801 DOI: 10.3389/fgene.2020.592595] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Accepted: 10/19/2020] [Indexed: 12/31/2022] Open
Abstract
UDP-glucuronosyltransferases (UGTs), being multifunctional detoxification enzymes, play a major role in the process of resistance to various pesticides in insects. However, the mechanism underlying the molecular regulation of pesticide resistance remains unclear, especially in Apis cerana cerana. In this study, all of the UGTs in Apis cerana cerana (AccUGT) have been identified through the multiple alignment and phylogenetic analysis. Expression of AccUGT genes under different pesticides, and antioxidant genes after silencing of AccUGT2B20-like, were detected by qRT-PCR. The resistance of overexpressed AccUGT2B20-like to oxidative stress was investigated by an Escherichia coli overexpression system. Also, antioxidant-related enzyme activity was detected after silencing of the AccUGT2B20-like gene. Expression pattern analysis showed that almost all UGT genes were upregulated under different pesticide treatments. This result indicated that AccUGTs participate in the detoxification process of pesticides. AccUGT2B20-like was the major gene because it was more highly induced than the others. Overexpression of AccUGT2B20-like in E. coli could effectively improve oxidative stress resistance. Specifically, silencing the AccUGT2B20-like gene increased oxidative stress by repressing the expression of oxidation-related genes, decreasing antioxidant-related enzyme activity, and increasing malondialdehyde concentration. Taken together, our results indicate that AccUGTs are involved in pesticide resistance, among which, AccUGT2B20-like contributes to the detoxification of pesticides by eliminating oxidative stress in Apis cerana cerana. This study explains the molecular basis for the resistance of bees to pesticides and provides an important safeguard for maintaining ecological balance.
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Affiliation(s)
- Xuepei Cui
- College of Animal Science and Technology, Shandong Agricultural University, Tai'an, China
| | - Chen Wang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, China
| | - Xinxin Wang
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, China
| | - Guilin Li
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, China
| | - Zhenguo Liu
- College of Animal Science and Technology, Shandong Agricultural University, Tai'an, China
| | - Hongfang Wang
- College of Animal Science and Technology, Shandong Agricultural University, Tai'an, China
| | - Xingqi Guo
- State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, China
| | - Baohua Xu
- College of Animal Science and Technology, Shandong Agricultural University, Tai'an, China
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Hu Z. What Socio-Economic and Political Factors Lead to Global Pesticide Dependence? A Critical Review from a Social Science Perspective. Int J Environ Res Public Health 2020; 17:E8119. [PMID: 33153166 DOI: 10.3390/ijerph17218119] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/30/2020] [Accepted: 10/31/2020] [Indexed: 01/30/2023]
Abstract
Dependence on chemical pesticides has become one of the most pressing challenges to global environmental sustainability and public health. Considerable regulatory efforts have been taken to mitigate pesticide dependence, which however has resulted in a prevalent ‘managerial failure’. Massive pesticide application has generated severe genetic resistance from pests, which has in turn further aggravated pesticide dependence and thus induced agrochemical industries to develop new pesticide varieties. This review proposes to look beyond the resistance-dependence nexus and presents a comprehensive discussion about global pesticide dependence in a social science perspective, i.e., revealing the socio-economic and political factors that reinforce pesticide dependence. These factors are classified into five intertwined themes: (1) agricultural regime, (2) social process of pesticide application, (3) economic analysis, (4) politics and governance, and (5) promotional failure of alternatives. It is found that pesticide dependence is not just a technological issue in the sphere of natural sciences, but more a human-made issue, with deep-seated socio-economic and political reasons. Addressing contemporary trap of global pesticide dependence entails a full acknowledgement and comprehension of the complex and intertwined factors. Furthermore, this review identifies two major explanatory approaches underlying the extant social science literature: a structuralist approach that stresses macro-level structures such as institutions, policies and paradigms, and an individualist approach that focuses on the decision-making of farmers at the micro level. This review recognizes the limitations of the two approaches and calls for transcending the duality. This study advocates a policy framework that emphasizes alignment and coordination from multi-dimensions, multi-actors and multi-scales. For future research, collaborations between natural and social scientists, and more integrated and interdisciplinary approaches should be strengthened.
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Bielza P, Balanza V, Cifuentes D, Mendoza JE. Challenges facing arthropod biological control: identifying traits for genetic improvement of predators in protected crops. Pest Manag Sci 2020; 76:3517-3526. [PMID: 32281233 DOI: 10.1002/ps.5857] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 04/03/2020] [Accepted: 04/12/2020] [Indexed: 06/11/2023]
Abstract
Biological control is an efficient pest control method but there are still limitations that are hindering its wider adoption. Genetic improvement of biological control agents (BCAs) can help to overcome these constraints, but the choice of key attributes for better performance that need to be selected is still an open question. Several characteristics have been suggested but the harsh reality is that selective breeding of BCAs has received a lot of attention but resulted in very little progress. Identifying the appropriate traits to be prioritized may be the first step to reverse this situation. In our opinion, the best way is to look at the factors limiting the performance of key BCAs, especially generalist predators (pesticide compatibility, prey-density dependence, non-suitable crops, and extreme environmental conditions), and according to these challenges, to choose the attributes that would allow BCAs to overcome those limitations. The benefits of selection for higher resistance to toxins, whether artificially applied (pesticides) or plant produced (plant defenses); increased fitness when feeding on non-prey food (supplemented or plant-derived); and better adaptation to extreme temperature and humidity are discussed. In conclusion, genetic improvement of BCAs can bring about new opportunities to biocontrol industry and users to enhance biocontrol resilience. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Pablo Bielza
- Departamento de Ingeniería Agronómica, Universidad Politécnica de Cartagena, Cartagena, Spain
- Instituto de Biotecnología Vegetal, Universidad Politécnica de Cartagena, Cartagena, Spain
| | - Virginia Balanza
- Departamento de Ingeniería Agronómica, Universidad Politécnica de Cartagena, Cartagena, Spain
| | - Dina Cifuentes
- Departamento de Ingeniería Agronómica, Universidad Politécnica de Cartagena, Cartagena, Spain
- Instituto de Biotecnología Vegetal, Universidad Politécnica de Cartagena, Cartagena, Spain
| | - José E Mendoza
- Departamento de Ingeniería Agronómica, Universidad Politécnica de Cartagena, Cartagena, Spain
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Karlsson Green K, Stenberg JA, Lankinen Å. Making sense of Integrated Pest Management (IPM) in the light of evolution. Evol Appl 2020; 13:1791-1805. [PMID: 32908586 PMCID: PMC7463341 DOI: 10.1111/eva.13067] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 07/04/2020] [Accepted: 07/06/2020] [Indexed: 12/21/2022] Open
Abstract
Integrated Pest Management (IPM) is a holistic approach to combat pests (including herbivores, pathogens, and weeds) using a combination of preventive and curative actions, and only applying synthetic pesticides when there is an urgent need. Just as the recent recognition that an evolutionary perspective is useful in medicine to understand and predict interactions between hosts, diseases, and medical treatments, we argue that it is crucial to integrate an evolutionary framework in IPM to develop efficient and reliable crop protection strategies that do not lead to resistance development in herbivores, pathogens, and weeds. Such a framework would not only delay resistance evolution in pests, but also optimize each element of the management and increase the synergies between them. Here, we outline key areas within IPM that would especially benefit from a thorough evolutionary understanding. In addition, we discuss the difficulties and advantages of enhancing communication among research communities rooted in different biological disciplines and between researchers and society. Furthermore, we present suggestions that could advance implementation of evolutionary principles in IPM and thus contribute to the development of sustainable agriculture that is resilient to current and emerging pests.
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Affiliation(s)
- Kristina Karlsson Green
- Department of Plant Protection BiologySwedish University of Agricultural SciencesAlnarpSweden
| | - Johan A. Stenberg
- Department of Plant Protection BiologySwedish University of Agricultural SciencesAlnarpSweden
| | - Åsa Lankinen
- Department of Plant Protection BiologySwedish University of Agricultural SciencesAlnarpSweden
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Harwood GP, Dolezal AG. Pesticide-Virus Interactions in Honey Bees: Challenges and Opportunities for Understanding Drivers of Bee Declines. Viruses 2020; 12:E566. [PMID: 32455815 PMCID: PMC7291294 DOI: 10.3390/v12050566] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 05/19/2020] [Accepted: 05/20/2020] [Indexed: 02/07/2023] Open
Abstract
Honey bees are key agricultural pollinators, but beekeepers continually suffer high annual colony losses owing to a number of environmental stressors, including inadequate nutrition, pressures from parasites and pathogens, and exposure to a wide variety of pesticides. In this review, we examine how two such stressors, pesticides and viruses, may interact in additive or synergistic ways to affect honey bee health. Despite what appears to be a straightforward comparison, there is a dearth of studies examining this issue likely owing to the complexity of such interactions. Such complexities include the wide array of pesticide chemical classes with different modes of actions, the coupling of many bee viruses with ectoparasitic Varroa mites, and the intricate social structure of honey bee colonies. Together, these issues pose a challenge to researchers examining the effects pesticide-virus interactions at both the individual and colony level.
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Affiliation(s)
- Gyan P. Harwood
- Department of Entomology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA;
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Delnat V, Janssens L, Stoks R. Effects of predator cues and pesticide resistance on the toxicity of a (bio)pesticide mixture. Pest Manag Sci 2020; 76:1448-1455. [PMID: 31639259 DOI: 10.1002/ps.5658] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 10/16/2019] [Accepted: 10/19/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Populations of target species are typically exposed to pesticide mixtures and natural stressors such as predator cues, and are increasingly developing resistance to single pesticides. Nevertheless, we have poor knowledge whether natural stressors and the presence of pesticide resistance shape mixture toxicity. We tested the single and combined effects of the pesticide chlorpyrifos and the biopesticide Bacillus thuringiensis israelensis (Bti) on the survival of the Southern house mosquito (Culex quinquefasciatus, Say) and whether these effects were magnified by synthetic predator cues of Notonecta water bugs and differed between a chlorpyrifos-resistant (Ace-1R) and non-resistant (S-Lab) strain. RESULTS Single exposure to Bti caused mortality in both strains (S-Lab ∼27%, Ace-1R ∼41%) and single exposure to chlorpyrifos caused only mortality in the S-Lab strain (∼33%), while predator cues did not induce mortality. The chlorpyrifos-resistant strain was 1.5-fold more sensitive to Bti, indicating a cost of resistance. The interaction types between chlorpyrifos and Bti (additive), between chlorpyrifos and predator cues (additive), and between Bti and predator cues (synergistic) were consistent in both strains. Despite predator cues making Bti approximately 8% more lethal, they did not change the additive interaction between Bti and chlorpyrifos in their mixture in either strain. CONCLUSION These results indicate that the resistance against chlorpyrifos was not partly lifted when chlorpyrifos exposure was combined with Bti and predator cues. Identifying the interaction type within pesticide mixtures and how this depends on natural stressors is important to select control strategies that give a disadvantage to resistant individuals compared to non-resistant individuals. © 2019 Society of Chemical Industry.
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Affiliation(s)
- Vienna Delnat
- Evolutionary Stress Ecology and Ecotoxicology, University of Leuven, Leuven, Belgium
| | - Lizanne Janssens
- Evolutionary Stress Ecology and Ecotoxicology, University of Leuven, Leuven, Belgium
| | - Robby Stoks
- Evolutionary Stress Ecology and Ecotoxicology, University of Leuven, Leuven, Belgium
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Major KM, Weston DP, Lydy MJ, Huff Hartz KE, Wellborn GA, Manny AR, Poynton HC. The G119S ace-1 mutation confers adaptive organophosphate resistance in a nontarget amphipod. Evol Appl 2020; 13:620-635. [PMID: 32211056 PMCID: PMC7086107 DOI: 10.1111/eva.12888] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 09/11/2019] [Accepted: 10/15/2019] [Indexed: 01/02/2023] Open
Abstract
Organophosphate (OP) and carbamate (CM) insecticides are widely used in the United States and share the same mode of toxic action. Both classes are frequently documented in aquatic ecosystems, sometimes at levels that exceed aquatic life benchmarks. We previously identified a population of the nontarget amphipod, Hyalella azteca, thriving in an agricultural creek with high sediment levels of the OP chlorpyrifos, suggesting the population may have acquired genetic resistance to the pesticide. In the present study, we surveyed 17 populations of H. azteca in California to screen for phenotypic resistance to chlorpyrifos as well as genetic signatures of resistance in the acetylcholinesterase (ace-1) gene. We found no phenotypic chlorpyrifos resistance in populations from areas with little or no pesticide use. However, there was ~3- to 1,000-fold resistance in H. azteca populations from agricultural and/or urban areas, with resistance levels in agriculture being far higher than urban areas due to greater ongoing use of OP and CM pesticides. In every case of resistance in H. azteca, we identified a glycine-to-serine amino acid substitution (G119S) that has been shown to confer OP and CM resistance in mosquitoes and has been associated with resistance in other insects. We found that the G119S mutation was always present in a heterozygous state. Further, we provide tentative evidence of an ace-1 gene duplication in H. azteca that may play a role in chlorpyrifos resistance in some populations. The detection of a genetically based, adaptive OP and CM resistance in some of the same populations of H. azteca previously shown to harbor a genetically based adaptive pyrethroid resistance indicates that these nontarget amphipod populations have become resistant to many of the insecticides now in common use. The terrestrial application of pesticides has provided strong selective pressures to drive evolution in a nontarget, aquatic species.
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Affiliation(s)
- Kaley M. Major
- School for the EnvironmentUniversity of MassachusettsBostonMassachusetts
- Present address:
Department of Environmental and Molecular ToxicologyOregon State UniversityCorvallisOregon
| | - Donald P. Weston
- Department of Integrative BiologyUniversity of California, BerkeleyBerkeleyCalifornia
| | - Michael J. Lydy
- Center for Fisheries, Aquaculture and Aquatic SciencesDepartment of ZoologySouthern Illinois UniversityCarbondaleIllinois
| | - Kara E. Huff Hartz
- Center for Fisheries, Aquaculture and Aquatic SciencesDepartment of ZoologySouthern Illinois UniversityCarbondaleIllinois
| | | | - Austin R. Manny
- Department of MicrobiologyHarvard Medical SchoolBostonMassachusetts
| | - Helen C. Poynton
- School for the EnvironmentUniversity of MassachusettsBostonMassachusetts
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Erban T, Vaclavikova M, Tomesova D, Halesova T, Hubert J. tau-Fluvalinate and other pesticide residues in honey bees before overwintering. Pest Manag Sci 2019; 75:3245-3251. [PMID: 30983110 DOI: 10.1002/ps.5446] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 04/11/2019] [Accepted: 04/15/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Pesticides have often been linked to honey bee colony losses, which occur mainly over winter. In this study, we investigated residues in nine colonies at a model agricultural research site during the period before wintering. Moreover, we applied the acaricide tau-fluvalinate to the colonies via a strip formulation. The pesticide content was determined by UHPLC-QqQ-MS/MS in bees from brood comb initially collected in mid-September immediately prior to the start of tau-fluvalinate treatment and 30 later at the time of tau-fluvalinate strip removal. RESULTS In addition to commonly analyzed pesticides, we detected two plant growth regulators, chlormequat and metazachlor, in the bee colonies. Whereas thiacloprid, chlormequat and acetamiprid decreased after 30 days and contributed considerably to differences between sample time points, other pesticides appeared to be rather stable. Interestingly, we identified diazinon, which has been banned in the European Union since 2007. The residues of methiocarb sulfoxide and imidacloprid-urea in the absence of their parent compounds indicate historical environmental contamination that can be identified by the detection of residues in a bee colony. tau-Fluvalinate was detected only after the 30-day treatment at an average (± SD) concentration of 1.29 ± 1.93 ng/bee, ranging from 0.06 to 7.13 ng/bee. CONCLUSION The multidimensional behavior of pesticides in a bee colony was indicated. Although the research area is used for agriculture, the measured pesticide level was relatively low. The recorded concentrations of tau-fluvalinate should not be dangerous to bees, as the values were ∼ 200-5000-fold lower than the reported median lethal dose (LD50 ) values. © 2019 Society of Chemical Industry.
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Affiliation(s)
| | | | | | | | - Jan Hubert
- Crop Research Institute, Prague, Czechia
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35
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Comont D, Hicks H, Crook L, Hull R, Cocciantelli E, Hadfield J, Childs D, Freckleton R, Neve P. Evolutionary epidemiology predicts the emergence of glyphosate resistance in a major agricultural weed. New Phytol 2019; 223:1584-1594. [PMID: 30883786 DOI: 10.1111/nph.15800] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 03/11/2019] [Indexed: 06/09/2023]
Abstract
The evolution of resistance to herbicides is a striking example of rapid, human-directed adaptation with major consequences for food production. Most studies of herbicide resistance are performed reactively and focus on post hoc determination of resistance mechanisms following the evolution of field resistance. If the evolution of resistance can be anticipated, however, pro-active management to slow or prevent resistance traits evolving can be advocated. We report a national-scale study that combines population monitoring, glyphosate sensitivity assays, quantitative genetics and epidemiological analyses to pro-actively identify the prerequisites for adaptive evolution (directional selection and heritable genetic variation) to the world's most widely used herbicide (glyphosate) in a major, economically damaging weed species, Alopecurus myosuroides. Results highlighted pronounced, heritable variability in glyphosate sensitivity amongst UK A. myosuroides populations. We demonstrated a direct epidemiological link between historical glyphosate selection and current population-level sensitivity, and show that current field populations respond to further glyphosate selection. This study provides a novel, pro-active assessment of adaptive potential for herbicide resistance, and provides compelling evidence of directional selection for glyphosate insensitivity in advance of reports of field resistance. The epidemiological approach developed can provide a basis for further pro-active study of resistance evolution across pesticide resistance disciplines.
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Affiliation(s)
- David Comont
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ, UK
| | - Helen Hicks
- School of Animal, Rural and Environmental Sciences, Nottingham Trent University, Southwell, NG25 0QF, UK
| | - Laura Crook
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ, UK
| | - Richard Hull
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ, UK
| | - Elise Cocciantelli
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ, UK
| | - Jarrod Hadfield
- Institute of Evolutionary Biology, School of Biological Sciences, The University of Edinburgh, Edinburgh, EH9 3JT, UK
| | - Dylan Childs
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield, South Yorkshire, S10 2TN, UK
| | - Robert Freckleton
- Department of Animal and Plant Sciences, University of Sheffield, Sheffield, South Yorkshire, S10 2TN, UK
| | - Paul Neve
- Department of Biointeractions and Crop Protection, Rothamsted Research, Harpenden, Hertfordshire, AL5 2JQ, UK
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Hawkins NJ, Bass C, Dixon A, Neve P. The evolutionary origins of pesticide resistance. Biol Rev Camb Philos Soc 2019; 94:135-155. [PMID: 29971903 PMCID: PMC6378405 DOI: 10.1111/brv.12440] [Citation(s) in RCA: 241] [Impact Index Per Article: 48.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Revised: 06/01/2018] [Accepted: 06/06/2018] [Indexed: 01/24/2023]
Abstract
Durable crop protection is an essential component of current and future food security. However, the effectiveness of pesticides is threatened by the evolution of resistant pathogens, weeds and insect pests. Pesticides are mostly novel synthetic compounds, and yet target species are often able to evolve resistance soon after a new compound is introduced. Therefore, pesticide resistance provides an interesting case of rapid evolution under strong selective pressures, which can be used to address fundamental questions concerning the evolutionary origins of adaptations to novel conditions. We ask: (i) whether this adaptive potential originates mainly from de novo mutations or from standing variation; (ii) which pre-existing traits could form the basis of resistance adaptations; and (iii) whether recurrence of resistance mechanisms among species results from interbreeding and horizontal gene transfer or from independent parallel evolution. We compare and contrast the three major pesticide groups: insecticides, herbicides and fungicides. Whilst resistance to these three agrochemical classes is to some extent united by the common evolutionary forces at play, there are also important differences. Fungicide resistance appears to evolve, in most cases, by de novo point mutations in the target-site encoding genes; herbicide resistance often evolves through selection of polygenic metabolic resistance from standing variation; and insecticide resistance evolves through a combination of standing variation and de novo mutations in the target site or major metabolic resistance genes. This has practical implications for resistance risk assessment and management, and lessons learnt from pesticide resistance should be applied in the deployment of novel, non-chemical pest-control methods.
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Affiliation(s)
- Nichola J. Hawkins
- Department of Biointeractions and Crop ProtectionRothamsted ResearchHarpendenAL5 4SEU.K.
| | - Chris Bass
- Department of BiosciencesUniversity of Exeter, Penryn CampusCornwallTR10 9FEU.K.
| | - Andrea Dixon
- Department of Biointeractions and Crop ProtectionRothamsted ResearchHarpendenAL5 4SEU.K.
- Department of Plant BiologyUniversity of GeorgiaAthensGA 30602U.S.A.
| | - Paul Neve
- Department of Biointeractions and Crop ProtectionRothamsted ResearchHarpendenAL5 4SEU.K.
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Matzrafi M. Climate change exacerbates pest damage through reduced pesticide efficacy. Pest Manag Sci 2019; 75:9-13. [PMID: 29920926 DOI: 10.1002/ps.5121] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 06/11/2018] [Accepted: 06/12/2018] [Indexed: 06/08/2023]
Abstract
Pesticide efficacy is strongly associated with environmental conditions. Conditional resistance defined as a reduction in pesticide sensitivity under changed environmental conditions has been widely detected under climatic changes such as elevated temperatures and CO2 enrichment. Given the effects of environmental conditions on pesticide sensitivity, many of the putative resistance reports made by farmers may be due to pesticide application followed by non-optimal environmental conditions rather than the evolution of resistance. This type of conditional resistance may be the result of phenotypic plasticity or epigenetic changes in response to environmental changes. Elevated temperatures and CO2 enrichment can directly lead to reduced pesticide efficacy by altering pesticide metabolism and translocation, or indirectly increasing pesticide detoxification in host-plants thus reducing pesticide availability for the target pest. Stress-related signal transduction pathways, as well as physiological changes, can both be associated with accelerated pesticide detoxification under climatic changes. The possibility for parallel mechanisms controlling these responses in different pest species should be considered. It is proposed that the same mechanisms leading to non-target site resistance in pests may also play a role in conditional resistance, suggesting we can predict the pesticides to which pests are likely to be less responsive under changing climatic conditions. Using adjuvants to improve pesticide translocation or reduce pesticide metabolism, alongside with new technologies such as using nanoparticles may result in higher pesticide functionality under the projected climate change. Exploring the physiological, transcriptional and biochemical basis underlying conditional resistance is crucial in maintaining future pest management under changing environmental conditions. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Maor Matzrafi
- Department of Plant Sciences, University of California, Davis, CA, USA
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Konganti K, Guerrero FD, Schilkey F, Ngam P, Jacobi JL, Umale PE, Perez de Leon AA, Threadgill DW. A Whole Genome Assembly of the Horn Fly, Haematobia irritans, and Prediction of Genes with Roles in Metabolism and Sex Determination. G3 (Bethesda) 2018; 8:1675-86. [PMID: 29602812 DOI: 10.1534/g3.118.200154] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Haematobia irritans, commonly known as the horn fly, is a globally distributed blood-feeding pest of cattle that is responsible for significant economic losses to cattle producers. Chemical insecticides are the primary means for controlling this pest but problems with insecticide resistance have become common in the horn fly. To provide a foundation for identification of genomic loci for insecticide resistance and for discovery of new control technology, we report the sequencing, assembly, and annotation of the horn fly genome. The assembled genome is 1.14 Gb, comprising 76,616 scaffolds with N50 scaffold length of 23 Kb. Using RNA-Seq data, we have predicted 34,413 gene models of which 19,185 have been assigned functional annotations. Comparative genomics analysis with the Dipteran flies Musca domestica L., Drosophila melanogaster, and Lucilia cuprina, show that the horn fly is most closely related to M. domestica, sharing 8,748 orthologous clusters followed by D. melanogaster and L. cuprina, sharing 7,582 and 7,490 orthologous clusters respectively. We also identified a gene locus for the sodium channel protein in which mutations have been previously reported that confers target site resistance to the most common class of pesticides used in fly control. Additionally, we identified 276 genomic loci encoding members of metabolic enzyme gene families such as cytochrome P450s, esterases and glutathione S-transferases, and several genes orthologous to sex determination pathway genes in other Dipteran species.
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Jugulam M, Gill BS. Molecular cytogenetics to characterize mechanisms of gene duplication in pesticide resistance. Pest Manag Sci 2018; 74:22-29. [PMID: 28714247 DOI: 10.1002/ps.4665] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2017] [Revised: 07/05/2017] [Accepted: 07/06/2017] [Indexed: 06/07/2023]
Abstract
Recent advances in molecular cytogenetics empower construction of physical maps to illustrate the precise position of genetic loci on the chromosomes. Such maps provide visible information about the position of DNA sequences, including the distribution of repetitive sequences on the chromosomes. This is an important step toward unraveling the genetic mechanisms implicated in chromosomal aberrations (e.g., gene duplication). In response to stress, such as pesticide selection, duplicated genes provide an immediate adaptive advantage to organisms that overcome unfavorable conditions. Although the significance of gene duplication as one of the important events driving genetic diversity has been reported, the precise mechanisms of gene duplication that contribute to pesticide resistance, especially to herbicides, are elusive. With particular reference to pesticide resistance, we discuss the prospects of application of molecular cytogenetic tools to uncover mechanism(s) of gene duplication, and illustrate hypothetical models that predict the evolutionary basis of gene duplication. The cytogenetic basis of duplicated genes, their stability, as well as the magnitude of selection pressure, can determine the dynamics of the genetic locus (loci) conferring pesticide resistance not only at the population level, but also at the individual level. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Mithila Jugulam
- Department of Agronomy Kansas State University, Manhattan, KS, USA
| | - Bikram S Gill
- Department of Plant Pathology, Kansas State University, Manhattan, KS, USA
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40
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Hardy NB, Peterson DA, Ross L, Rosenheim JA. Does a plant-eating insect's diet govern the evolution of insecticide resistance? Comparative tests of the pre-adaptation hypothesis. Evol Appl 2017; 11:739-747. [PMID: 29875815 PMCID: PMC5979754 DOI: 10.1111/eva.12579] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Accepted: 11/20/2017] [Indexed: 11/30/2022] Open
Abstract
According to the pre‐adaptation hypothesis, the evolution of insecticide resistance in plant‐eating insects co‐opts adaptations that initially evolved during chemical warfare with their host plants. Here, we used comparative statistics to test two predictions of this hypothesis: (i) Insects with more diverse diets should evolve resistance to more diverse insecticides. (ii) Feeding on host plants with strong or diverse qualitative chemical defenses should prime an insect lineage to evolve insecticide resistance. Both predictions are supported by our tests. What makes this especially noteworthy is that differences in the diets of plant‐eating insect species are typically ignored by the population genetic models we use to make predictions about insecticide resistance evolution. Those models surely capture some of the differences between host‐use generalists and specialists, for example, differences in population size and migration rates into treated fields, but they miss other potentially important differences, for example, differences in metabolic diversity and gene expression plasticity. Ignoring these differences could be costly.
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Affiliation(s)
- Nate B Hardy
- Department of Entomology and Plant Pathology Auburn University Auburn AL USA
| | - Daniel A Peterson
- Graduate Program in Organismic & Evolutionary Biology Department of Biology University of Massachusetts Amherst MA USA
| | - Laura Ross
- School of Biological Sciences Institute of Evolutionary Biology University of Edinburgh Edinburgh UK
| | - Jay A Rosenheim
- Department of Entomology and Nematology University of California Davis CA USA
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Davis AS, Frisvold GB. Are herbicides a once in a century method of weed control? Pest Manag Sci 2017; 73:2209-2220. [PMID: 28618159 DOI: 10.1002/ps.4643] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Revised: 06/08/2017] [Accepted: 06/10/2017] [Indexed: 06/07/2023]
Abstract
The efficacy of any pesticide is an exhaustible resource that can be depleted over time. For decades, the dominant paradigm - that weed mobility is low relative to insect pests and pathogens, that there is an ample stream of new weed control technologies in the commercial pipeline, and that technology suppliers have sufficient economic incentives and market power to delay resistance - supported a laissez faire approach to herbicide resistance management. Earlier market data bolstered the belief that private incentives and voluntary actions were sufficient to manage resistance. Yet, there has been a steady growth in resistant weeds, while no new commercial herbicide modes of action (MOAs) have been discovered in 30 years. Industry has introduced new herbicide tolerant crops to increase the applicability of older MOAs. Yet, many weed species are already resistant to these compounds. Recent trends suggest a paradigm shift whereby herbicide resistance may impose greater costs to farmers, the environment, and taxpayers than earlier believed. In developed countries, herbicides have been the dominant method of weed control for half a century. Over the next half-century, will widespread resistance to multiple MOAs render herbicides obsolete for many major cropping systems? We suggest it would be prudent to consider the implications of such a low-probability, but high-cost development. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Adam S Davis
- United States Department of Agriculture-Agricultural Research Service, Global Change and Photosynthesis Research Unit, Urbana, Illinois, USA
| | - George B Frisvold
- Agricultural and Resource Economics, University of Arizona, Tucson, Arizona, USA
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Poley JD, Braden LM, Messmer AM, Whyte SK, Koop BF, Fast MD. Cypermethrin exposure induces metabolic and stress-related gene expression in copepodid salmon lice (Lepeophtheirus salmonis). Comp Biochem Physiol Part D Genomics Proteomics 2016; 20:74-84. [PMID: 27612154 DOI: 10.1016/j.cbd.2016.08.004] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Revised: 08/05/2016] [Accepted: 08/11/2016] [Indexed: 01/12/2023]
Abstract
Cypermethrin has been administered for decades to control salmon lice (Lepeophtheirus salmonis) infestations in Atlantic salmon farming regions globally. However, resistance to cypermethrin and other available therapeutants has threatened the sustainability of this growing industry. To better understand the effects of cypermethrin on L. salmonis, a 38K oligonucleotide microarray and RT-qPCR analyses were applied to pools of copepodid larvae exposed to 1.0ppb cypermethrin or seawater controls for 24h. Phenotypic assessments and global gene expression profiles showed a significant disruption of homeostasis in copepodid L. salmonis exposed to cypermethrin. Multiple degradative enzymes were overexpressed in cypermethrin-treated lice including five trypsin-like serine proteases and three cytochrome p450s CYP3a24 (p=0.03, fold change (FC)=3.8; GenBank accession no. JP326960.1), CYP6w1 (p=0.008, FC=5.3; GenBank accession no. JP317875.1), and CYP6d4 (p=0.01; FC=7.9; GenBank accession no. JP334550.1). These enzymes represent preliminary markers for understanding the physiological response of L. salmonis to cypermethrin exposure. A general stress response was also observed in cypermethrin-treated lice which included differential expression of cell signaling genes involved in the induction of cell growth, solute transport, and metabolism. Lastly, a consensus-based analysis was completed with two previously published L. salmonis transcriptome studies revealing genes that respond to cypermethrin, emamectin benzoate (another delousing agent) and hyposalinity. This included concordant differential expression of heat shock beta-1, ammonium transporter Rh types B, and 72kDa type IV collagenase across different L. salmonis studies. This is currently the most comprehensive transcriptome assessment of chemical exposure on the first infectious stage of L. salmonis, providing novel markers for studying drug resistance and general stress in this important parasite.
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Affiliation(s)
- Jordan D Poley
- Hoplite Lab, Department of Pathology & Microbiology, Atlantic Veterinary College, University of Prince Edward Island, 550 University Ave, Charlottetown, PE, C1A 4P3, Canada.
| | - Laura M Braden
- Hoplite Lab, Department of Pathology & Microbiology, Atlantic Veterinary College, University of Prince Edward Island, 550 University Ave, Charlottetown, PE, C1A 4P3, Canada.
| | - Amber M Messmer
- Centre for Biomedical Research, Department of Biology, University of Victoria, Victoria, BC, V8W 3N5, Canada.
| | - Shona K Whyte
- Hoplite Lab, Department of Pathology & Microbiology, Atlantic Veterinary College, University of Prince Edward Island, 550 University Ave, Charlottetown, PE, C1A 4P3, Canada.
| | - Ben F Koop
- Centre for Biomedical Research, Department of Biology, University of Victoria, Victoria, BC, V8W 3N5, Canada.
| | - Mark D Fast
- Hoplite Lab, Department of Pathology & Microbiology, Atlantic Veterinary College, University of Prince Edward Island, 550 University Ave, Charlottetown, PE, C1A 4P3, Canada.
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Jin Y, Cong B, Wang L, Gao Y, Zhang H, Dong H, Lin Z. Differential Gene Expression Analysis of the Epacromius coerulipes (Orthoptera: Acrididae) Transcriptome. J Insect Sci 2016; 16:iew014. [PMID: 27142308 PMCID: PMC4864582 DOI: 10.1093/jisesa/iew014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2015] [Accepted: 02/05/2016] [Indexed: 06/05/2023]
Abstract
Epacromius coerulipes (Ivanov) is one of the most widely distributed locusts. To date, the main methods to kill locusts still rely on chemical controls, which can result in the selection of locusts with resistance to chemical pesticides. Butene-fipronil is a new pesticide that was discovered by the structural modification of fipronil. This pesticide has been used to control various agricultural pests and has become an important pesticide product to control pests that exhibit resistance to other pesticides, including locusts. To extend its useful half-life, studies of the initiation and progression of resistance to this pesticide are needed. Herein, two E. coerulipes strains, a pesticide-sensitive (PS) and a pesticide-resistant (PR) strain, were chosen to undergo de novo assembly by paired-end transcriptome Illumina sequencing. Overall, 63,033 unigenes were detected; the average gene length was 772 bp and the N50 was 1,589 bp. Among these unigenes, ∼ 25,132 (39.87% of the total) could be identified as known proteins in bioinformatic databases from national centers. A comparison of the PR and PS strains revealed that 2,568 genes were differentially expressed, including 1,646 and 922 genes that were up- and down-regulated, respectively. According to the Gene Ontology (GO) database, among biological processes the metabolic process group was the largest group (6,900 genes, 22.47%) and contained a high frequency of differentially expressed genes (544 genes, 27.54%). According to the Clusters of Orthologous Groups (COG) categories, 28 genes, representing 2.98% of all genes, belonged to the group of genes involved in the biosynthesis, transportation, and catabolism of secondary metabolites. The differentially expressed genes that we identified are involved in 50 metabolic pathways. Among these pathways, the metabolism pathway was the most represented. After enrichment analysis of differential gene expression pathways, six pathways--ribosome; starch, and sucrose metabolism; ascorbate and aldarate metabolism; drug metabolism-cytochrome P450; metabolism of xenobiotics by cytochrome P450; and glutathione metabolism--showed a high degree of enrichment. Among these pathways, drug metabolism-cytochrome P450, metabolism of xenobiotics by cytochrome P450, and glutathione metabolism have been associated with pesticide metabolism. Furthermore, 316 unigenes in the E. coerulipes transcriptome encode detoxifying enzymes and 76 unigenes encode target proteins of pesticides. Among these genes, 23 genes that encode detoxifying enzymes in the resistance group were found to be up-regulated. The transcriptome sequencing results of E. coerulipes established a genomics database of E. coerulipes for the first time. This study also establishes a molecular basis for gene function analysis of E. coerulipes Moreover, it provides a theoretical resource for mechanistic studies on pesticide resistance through the screening and investigation of resistance genes.
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Affiliation(s)
- Yongling Jin
- Shenyang Agriculture University, Shenyang of Liaoning province, China, 110061 (; ; ) Heilongjiang Bayi Agricultural University,Daqing of Heilongjiang province, China,, 163319 ((; ; ; )
| | - Bin Cong
- Shenyang Agriculture University, Shenyang of Liaoning province, China, 110061 (; ; )
| | - Liyan Wang
- Heilongjiang Bayi Agricultural University,Daqing of Heilongjiang province, China,, 163319 ((; ; ; )
| | - Yugang Gao
- Heilongjiang Bayi Agricultural University,Daqing of Heilongjiang province, China,, 163319 ((; ; ; )
| | - Haiyan Zhang
- Heilongjiang Bayi Agricultural University,Daqing of Heilongjiang province, China,, 163319 ((; ; ; )
| | - Hui Dong
- Shenyang Agriculture University, Shenyang of Liaoning province, China, 110061 (; ; )
| | - Zhiwei Lin
- Heilongjiang Bayi Agricultural University,Daqing of Heilongjiang province, China,, 163319 ((; ; ; )
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Abstract
The genetic recovery of resistant populations released from pesticide exposure is
accelerated by the presence of environmental stressors. By contrast, the
relevance of environmental stressors for the spread of resistance during
pesticide exposure has not been studied. Moreover, the consequences of
interactions between different stressors have not been considered. Here we show
that stress through intraspecific competition accelerates microevolution,
because it enhances fitness differences between adapted and non-adapted
individuals. By contrast, stress through interspecific competition or predation
reduces intraspecific competition and thereby delays microevolution. This was
demonstrated in mosquito populations (Culex quinquefasciatus)
that were exposed to the pesticide chlorpyrifos. Non-selective predation through
harvesting and interspecific competition with Daphnia magna
delayed the selection for individuals carrying the
ace-1R resistance allele. Under non-toxic
conditions, susceptible individuals without ace-1R
prevailed. Likewise, predation delayed the reverse adaptation of the populations
to a non-toxic environment, while the effect of interspecific competition was
not significant. Applying a simulation model, we further identified how
microevolution is generally determined by the type and degree of competition and
predation. We infer that interactions with other species—especially
strong in ecosystems with high biodiversity—can delay the development of
pesticide resistance.
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Affiliation(s)
- Jeremias Martin Becker
- Department System Ecotoxicology, UFZ-Helmholtz Centre for Environmental Research, Permoserstrasse 15, 04318 Leipzig, Germany Department of Ecosystem Analysis, RWTH-Aachen University, Institute for Environmental Research, Worringerweg 1, 52074 Aachen, Germany
| | - Matthias Liess
- Department System Ecotoxicology, UFZ-Helmholtz Centre for Environmental Research, Permoserstrasse 15, 04318 Leipzig, Germany Department of Ecosystem Analysis, RWTH-Aachen University, Institute for Environmental Research, Worringerweg 1, 52074 Aachen, Germany
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Riggi LGA, Gagic V, Bommarco R, Ekbom B. Insecticide resistance in pollen beetles over 7 years - a landscape approach. Pest Manag Sci 2016; 72:780-786. [PMID: 26033304 DOI: 10.1002/ps.4052] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2015] [Revised: 05/15/2015] [Accepted: 05/28/2015] [Indexed: 06/04/2023]
Abstract
BACKGROUND In spite of considerable interest in the impact of pesticides on pest populations, few attempts have been made to link resistance patterns of insect pests to land-use features across spatial and temporal scales. We hypothesise that pollen beetle pesticide resistance increases in areas with a high proportion of oilseed rape and with an even mixture of winter and spring oilseed rape owing to high pesticide selection pressure in such areas. RESULTS Here, we investigated 7 years of lambda-cyhalothrin (Karate(®) ) resistance in field-collected pollen beetle adults from a total of 180 sampling points across ten regions in Sweden. We found a positive effect on pollen beetle pesticide resistance of proportion of oilseed rape and even spring-winter oilseed rape mixture. However, this was true only for the regional spatial scale. Significant land-use effects in the long-term models, with oilseed rape data averaged over a longer (4 years) period of time, suggested an effect of regional landscape history on current pest resistance. CONCLUSION For successful control of pollen beetle pesticide resistance, we suggest a long-term regional strategy for oilseed rape management. This land-use approach provides a framework for further investigations that integrate resistance management into landscape research.
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Affiliation(s)
- Laura G A Riggi
- Swedish University of Agricultural Sciences, Department of Ecology, Uppsala, Sweden
| | - Vesna Gagic
- Swedish University of Agricultural Sciences, Department of Ecology, Uppsala, Sweden
| | - Riccardo Bommarco
- Swedish University of Agricultural Sciences, Department of Ecology, Uppsala, Sweden
| | - Barbara Ekbom
- Swedish University of Agricultural Sciences, Department of Ecology, Uppsala, Sweden
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Reynolds A, Lindström J, Johnson PCD, Mable BK. Evolution of drug-tolerant nematode populations in response to density reduction. Evol Appl 2016; 9:726-38. [PMID: 27247622 PMCID: PMC4869413 DOI: 10.1111/eva.12376] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 02/29/2016] [Indexed: 12/01/2022] Open
Abstract
Resistance to xenobiotics remains a pressing issue in parasite treatment and global agriculture. Multiple factors may affect the evolution of resistance, including interactions between life‐history traits and the strength of selection imposed by different drug doses. We experimentally created replicate selection lines of free‐living Caenorhabditis remanei exposed to Ivermectin at high and low doses to assess whether survivorship of lines selected in drug‐treated environments increased, and if this varied with dose. Additionally, we maintained lines where mortality was imposed randomly to control for differences in density between drug treatments and to distinguish between the evolutionary consequences of drug‐treatment versus ecological processes due to changes in density‐dependent feedback. After 10 generations, we exposed all of the selected lines to high‐dose, low‐dose and drug‐free environments to evaluate evolutionary changes in survivorship as well as any costs to adaptation. Both adult and juvenile survival were measured to explore relationships between life‐history stage, selection regime and survival. Intriguingly, both drug‐selected and random‐mortality lines showed an increase in survivorship when challenged with Ivermectin; the magnitude of this increase varied with the intensity of selection and life‐history stage. Our results suggest that interactions between density‐dependent processes and life history may mediate evolved changes in susceptibility to control measures.
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Affiliation(s)
- Alan Reynolds
- Institute of Biodiversity, Animal Health and Comparative Medicine College of Medical, Veterinary and Life Sciences University of Glasgow Glasgow UK
| | - Jan Lindström
- Institute of Biodiversity, Animal Health and Comparative Medicine College of Medical, Veterinary and Life Sciences University of Glasgow Glasgow UK
| | - Paul C D Johnson
- Institute of Biodiversity, Animal Health and Comparative Medicine College of Medical, Veterinary and Life Sciences University of Glasgow Glasgow UK
| | - Barbara K Mable
- Institute of Biodiversity, Animal Health and Comparative Medicine College of Medical, Veterinary and Life Sciences University of Glasgow Glasgow UK
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Hu J, Xu Q, Chi Q, Liu W, Li F, Cheng L. IDENTIFICATION OF PROTEASOME ALPHA6 SUBUNIT ASSOCIATED WITH DELTAMETHRIN RESISTANCE IN Drosophila melanogaster Kc CELLS. Arch Insect Biochem Physiol 2016; 91:124-134. [PMID: 26764169 DOI: 10.1002/arch.21313] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Differential expression of the proteasome alpha6 (prosalpha6) was previously reported between Plutella xylostella strains that are resistant or susceptible to the pesticide deltamethrin (DM). This finding indicated that the prosalpha6 may be involved in DM resistance. In this article, qPCR analysis revealed that the prosalpha6 was also significantly upregulated in Drosophila Kc cells treated with DM. To better understand the contribution of prosalpha6 in DM resistance, RNA interference, heterologous expression, and a proteasome inhibitor (MG-132) were used. MG-132 was used to suppress proteasomal activity, and the dsRNA was designed to block the function of prosalpha6. The results indicated that both MG-132 and prosalpha6 knockdown decreased the cellular viability following DM treatment. Prosalpha6 was cloned and transfected into Drosophila Kc cells. The result showed that overexpression of prosalpha6 in Drosophila Kc cells conferred some protection against DM. Taken together, our results indicate that prosalpha6 is involved in Drosophila cells DM resistance.
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Affiliation(s)
- Junli Hu
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Qin Xu
- College of Energy and Mechanical Engineering, Nanjing Normal University, Nanjing, China
| | - Qingping Chi
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Wei Liu
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Fengliang Li
- Institute of Plant Protection, Guizhou Academy of Agriculture Science, Guiyang, China
| | - Luogen Cheng
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing, China
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Coates BS, Alves AP, Wang H, Zhou X, Nowatzki T, Chen H, Rangasamy M, Robertson HM, Whitfield CW, Walden KK, Kachman SD, French BW, Meinke LJ, Hawthorne D, Abel CA, Sappington TW, Siegfried BD, Miller NJ. Quantitative trait locus mapping and functional genomics of an organophosphate resistance trait in the western corn rootworm, Diabrotica virgifera virgifera. Insect Mol Biol 2016; 25:1-15. [PMID: 26566705 DOI: 10.1111/imb.12194] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The western corn rootworm, Diabrotica virgifera virgifera, is an insect pest of corn and population suppression with chemical insecticides is an important management tool. Traits conferring organophosphate insecticide resistance have increased in frequency amongst D. v. virgifera populations, resulting in the reduced efficacy in many corn-growing regions of the USA. We used comparative functional genomic and quantitative trait locus (QTL) mapping approaches to investigate the genetic basis of D. v. virgifera resistance to the organophosphate methyl-parathion. RNA from adult methyl-parathion resistant and susceptible adults was hybridized to 8331 microarray probes. The results predicted that 11 transcripts were significantly up-regulated in resistant phenotypes, with the most significant (fold increases ≥ 2.43) being an α-esterase-like transcript. Differential expression was validated only for the α-esterase (ST020027A20C03), with 11- to 13-fold greater expression in methyl-parathion resistant adults (P < 0.05). Progeny with a segregating methyl-parathion resistance trait were obtained from a reciprocal backcross design. QTL analyses of high-throughput single nucleotide polymorphism genotype data predicted involvement of a single genome interval. These data suggest that a specific carboyxesterase may function in field-evolved corn rootworm resistance to organophosphates, even though direct linkage between the QTL and this locus could not be established.
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Affiliation(s)
- B S Coates
- USDA-ARS, Corn Insects & Crop Genetics Research Unit, Ames, IA, USA
| | - A P Alves
- University of Nebraska, Lincoln, NE, USA
| | - H Wang
- University of Nebraska, Lincoln, NE, USA
| | - X Zhou
- University of Nebraska, Lincoln, NE, USA
| | - T Nowatzki
- University of Nebraska, Lincoln, NE, USA
| | - H Chen
- University of Nebraska, Lincoln, NE, USA
| | | | | | | | - K K Walden
- University of Illinois, Champaign-Urbana, IL, USA
| | | | - B W French
- USDA-ARS, North-Central Agricultural Research Laboratory, Brooking, SD, USA
| | - L J Meinke
- University of Nebraska, Lincoln, NE, USA
| | - D Hawthorne
- University of Maryland, College Park, MD, USA
| | - C A Abel
- USDA-ARS, Corn Insects & Crop Genetics Research Unit, Ames, IA, USA
- Iowa State University, Ames, IA, USA
| | - T W Sappington
- USDA-ARS, Corn Insects & Crop Genetics Research Unit, Ames, IA, USA
- Iowa State University, Ames, IA, USA
| | | | - N J Miller
- University of Nebraska, Lincoln, NE, USA
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49
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Gressel J. Dealing with transgene flow of crop protection traits from crops to their relatives. Pest Manag Sci 2015; 71:658-667. [PMID: 24977384 DOI: 10.1002/ps.3850] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 06/22/2014] [Accepted: 06/24/2014] [Indexed: 06/03/2023]
Abstract
Genes regularly move within species, to/from crops, as well as to their con- specific progenitors, feral and weedy forms ('vertical' gene flow). Genes occasionally move to/from crops and their distantly related, hardly sexually interbreeding relatives, within a genus or among closely related genera (diagonal gene flow). Regulators have singled out transgene flow as an issue, yet non-transgenic herbicide resistance traits pose equal problems, which cannot be mitigated. The risks are quite different from genes flowing to natural (wild) ecosystems versus ruderal and agroecosystems. Transgenic herbicide resistance poses a major risk if introgressed into weedy relatives; disease and insect resistance less so. Technologies have been proposed to contain genes within crops (chloroplast transformation, male sterility) that imperfectly prevent gene flow by pollen to the wild. Containment does not prevent related weeds from pollinating crops. Repeated backcrossing with weeds as pollen parents results in gene establishment in the weeds. Transgenic mitigation relies on coupling crop protection traits in a tandem construct with traits that lower the fitness of the related weeds. Mitigation traits can be morphological (dwarfing, no seed shatter) or chemical (sensitivity to a chemical used later in a rotation). Tandem mitigation traits are genetically linked and will move together. Mitigation traits can also be spread by inserting them in multicopy transposons which disperse faster than the crop protection genes in related weeds. Thus, there are gene flow risks mainly to weeds from some crop protection traits; risks that can and should be dealt with.
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50
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Elfekih S, Shannon M, Haran J, Vogler AP. Detection of the Acetylcholinesterase Insecticide Resistance Mutation (G328A) in Natural Populations of Ceratitis capitata. J Econ Entomol 2014; 107:1965-1968. [PMID: 26309287 DOI: 10.1603/ec14166] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Wild Mediterranean fruit fly specimens collected from various regions worldwide were screened for the glycine to alanine (Gly->Ala) point mutation (G328A) in the acetylcholinesterase enzyme, presumably causing resistance to organophosphates. We found that the single nucleotide polymorphism (SNP) responsible for this amino acid change is located at the beginning of exon 6 of the Ccace2 gene. The identification of the exact location of the SNP permitted PCR primer design around this site and direct sequencing of the corresponding genomic region. We detected the resistance allele in natural Mediterranean fruit fly populations from Brazil and Spain, but not from other sites in four continents. The known treatment history of sites suggests that the resistance buildup is linked to organophosphate application in the field. The PCR-based detection provides a screening method useful for monitoring Mediterranean fruit fly insecticide resistance in local populations and improving pest management strategies accordingly.
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Affiliation(s)
- Samia Elfekih
- CSIRO Biosecurity flagship, Canberra, Australia. Department of Life Sciences, Natural History Museum, London, UK. Department of Life Sciences, Imperial College London, Silwood Park Campus, Ascot, UK.
| | - Matthew Shannon
- Department of Life Sciences, Imperial College London, Silwood Park Campus, Ascot, UK
| | - Julien Haran
- Department of Life Sciences, Natural History Museum, London, UK. Department of Life Sciences, Imperial College London, Silwood Park Campus, Ascot, UK. INRA, Zoologie ForestiÈre, BP 20619, F-45166 Olivet Cedex, France
| | - Alfried P Vogler
- Department of Life Sciences, Natural History Museum, London, UK. Department of Life Sciences, Imperial College London, Silwood Park Campus, Ascot, UK
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