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Tsvetkov N, Bahia S, Calla B, Berenbaum MR, Zayed A. Genetics of tolerance in honeybees to the neonicotinoid clothianidin. iScience 2023; 26:106084. [PMID: 36843853 PMCID: PMC9947305 DOI: 10.1016/j.isci.2023.106084] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 01/17/2023] [Accepted: 01/25/2023] [Indexed: 02/05/2023] Open
Abstract
The effects of neonicotinoid insecticides (NNIs) on honeybee health are intensely debated, with numerous studies showing negative effects of exposure, while others report no such effects. We carried out experiments to study the genetic and molecular basis of NNI tolerance in honeybees, which may underlie the discrepancies observed in the literature. We discovered that worker survival post-exposure to an acute oral dose of clothianidin is heritable (H 2 = 37.8%). Tolerance to clothianidin was not associated with differences in the expression of detoxification enzymes in our experiments. Instead, mutations in the primary neonicotinoid detoxification genes CYP9Q1 and CYP9Q3 were strongly associated with worker survival post-clothianidin exposure. In some instances, the strong association between CYP9Q haplotypes and worker survival was associated with the protein's predicted binding affinity for clothianidin. Our findings have implications regarding future toxicological studies utilizing honeybees as a model pollinator.
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Affiliation(s)
- Nadejda Tsvetkov
- Department of Biology, York University, Toronto, ON M3J 1P3, Canada
| | - Simran Bahia
- Department of Biology, York University, Toronto, ON M3J 1P3, Canada
| | - Bernarda Calla
- Department of Entomology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - May R. Berenbaum
- Department of Entomology, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Amro Zayed
- Department of Biology, York University, Toronto, ON M3J 1P3, Canada,Corresponding author
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2
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Krishnani KK, Oakeshott JG, Pandey G. Wide substrate range for a candidate bioremediation enzyme isolated from Nocardioides sp. strain SG-4 G. FEMS Microbiol Lett 2023; 370:fnad085. [PMID: 37660276 PMCID: PMC10501498 DOI: 10.1093/femsle/fnad085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 08/09/2023] [Accepted: 08/25/2023] [Indexed: 09/04/2023] Open
Abstract
Narrow substrate ranges can impact heavily on the range of applications and hence commercial viability of candidate bioremediation enzymes. Here we show that an ester hydrolase from Nocardioides strain SG-4 G has potential as a bioremediation agent against various pollutants that can be detoxified by hydrolytic cleavage of some carboxylester, carbamate, or amide linkages. Previously we showed that a radiation-killed, freeze-dried preparation (ZimA) of this strain can rapidly degrade the benzimidazole fungicide carbendazim due to the activity of a specific ester hydrolase, MheI. Here, we report that ZimA also has substantial hydrolytic activity against phthalate diesters (dimethyl, dibutyl, and dioctyl phthalate), anilide (propanil and monalide), and carbamate ester (chlorpropham) herbicides under laboratory conditions. The reaction products are substantially less toxic, or inactive as herbicides, than the parent compounds. Tests of strain SG-4 G and Escherichia coli expressing MheI found they were also able to hydrolyse dimethyl phthalate, propanil, and chlorpropham, indicating that MheI is principally responsible for the above activities.
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Affiliation(s)
- Kishore K Krishnani
- CSIRO Environment, Canberra, ACT 2601, Australia
- Central Institute of Fisheries Education, Versova, Andheri (West), Mumbai 400061, India
| | - John G Oakeshott
- CSIRO Environment, Canberra, ACT 2601, Australia
- Applied BioSciences, Macquarie University, North Ryde, New South Wales 2113, Australia
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Xu JJ, Chang YM, Lu M, Tie Y, Dong YL, Chen GY, Ma ZQ, Liu XL, Li YQ. Two single mutations in carboxylesterase 001C improve fenvalerate hydrolase activity in Helicoverpa armigera. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2021; 179:104969. [PMID: 34802519 DOI: 10.1016/j.pestbp.2021.104969] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 09/17/2021] [Accepted: 09/22/2021] [Indexed: 06/13/2023]
Abstract
Carboxylesterases (CarEs) usually play critical roles in the detoxification of toxic chemicals and therefore may be involved in insecticide resistance in agricultural pests. Previous work has shown that CarE 001C from Helicoverpa armigera was able to metabolize the isomers of cypermethrin and fenvalerate. In this study, seven mutants of CarE 001C with single amino acid substitution were produced and expressed in the Escherichia coli. Enzyme kinetic analysis indicated that all seven mutations dramatically reduced enzymatic activities toward the generic substrate α-naphthyl acetate, but in vitro metabolism assay showed that two of the mutations, H423I and R322L, significantly improved hydrolase activities toward fenvalerate, with their recorded specific activities being 3.5 and 5.1 nM·s-1·mg -1 proteins, respectively. Further, thermostability assay showed that the stability of one mutant enzyme was enhanced. This study will help us better understand the potential of CarEs in insecticide detoxification and resistance in H. armigera.
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Affiliation(s)
- Jing-Jing Xu
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China; State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yong-Mei Chang
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China; State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Mei Lu
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China; Engineering and Research Center of Biological Pesticide of Shaanxi Province,Yangling 712100, Shaanxi, China
| | - Yuan Tie
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China; State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yan-Ling Dong
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Guang-You Chen
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China; Engineering and Research Center of Biological Pesticide of Shaanxi Province,Yangling 712100, Shaanxi, China
| | - Zhi-Qing Ma
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China; State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling 712100, Shaanxi, China; Engineering and Research Center of Biological Pesticide of Shaanxi Province,Yangling 712100, Shaanxi, China
| | - Xi-Li Liu
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China; State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Yong-Qiang Li
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China; State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling 712100, Shaanxi, China; Engineering and Research Center of Biological Pesticide of Shaanxi Province,Yangling 712100, Shaanxi, China.
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4
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Zoh MG, Gaude T, Prud'homme SM, Riaz MA, David JP, Reynaud S. Molecular bases of P450-mediated resistance to the neonicotinoid insecticide imidacloprid in the mosquito Ae. aegypti. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2021; 236:105860. [PMID: 34015756 DOI: 10.1016/j.aquatox.2021.105860] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Revised: 04/06/2021] [Accepted: 05/01/2021] [Indexed: 06/12/2023]
Abstract
Resistance to chemical insecticides including pyrethroids, the main insecticide class used against mosquitoes, has re-kindled interest in the use of neonicotinoids. In this context, the present study aimed to characterize the molecular basis of neonicotinoid resistance in the mosquito Aedes aegypti. Resistance mechanisms were studied by combining transcriptomic and genomic data obtained from a laboratory strain selected at the larval stage after 30 generations of exposure to imidacloprid (Imida-R line). After thirty generations of selection, larvae of the Imida-R line showed an 8-fold increased resistance to imidacloprid and a significant cross-tolerance to the pyrethroids permethrin and deltamethrin. Cross-resistance to pyrethroids was only observed in adults when larvae were previously exposed to imidacloprid suggesting a low but inducible expression of resistance alleles at the adult stage. Resistance of the Imida-R line was associated with a slower larval development time in females. Multiple detoxification enzymes were over-transcribed in larvae in association with resistance including the P450s CYP6BB2, CYP9M9 and CYP6M11 previously associated with pyrethroid resistance. Some of them together with their redox partner NADPH P450 reductase were also affected by non-synonymous mutations associated with resistance. Combining genomic and transcriptomic data allowed identifying promoter variations associated with the up-regulation of CYP6BB2 in the resistant line. Overall, these data confirm the key role of P450s in neonicotinoid resistance in Ae. aegypti and their potential to confer cross-resistance to pyrethroids, raising concerns about the use of neonicotinoids for resistance management in this mosquito species.
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Affiliation(s)
- Marius Gonse Zoh
- Univ. Grenoble-Alpes, Univ. Savoie Mont Blanc, CNRS, LECA, 38000 Grenoble, France.
| | - Thierry Gaude
- Univ. Grenoble-Alpes, Univ. Savoie Mont Blanc, CNRS, LECA, 38000 Grenoble, France.
| | | | - Muhammad Asam Riaz
- Department of Entomology, College of Agriculture, University of Sargodha, Sargodha Pakistan.
| | - Jean-Philippe David
- Univ. Grenoble-Alpes, Univ. Savoie Mont Blanc, CNRS, LECA, 38000 Grenoble, France.
| | - Stéphane Reynaud
- Univ. Grenoble-Alpes, Univ. Savoie Mont Blanc, CNRS, LECA, 38000 Grenoble, France.
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Bai LS, Xu JJ, Zhao CX, Chang YL, Dong YL, Zhang KG, Li YQ, Li YP, Ma ZQ, Liu XL. Enhanced hydrolysis of β-cypermethrin caused by deletions in the glycin-rich region of carboxylesterase 001G from Helicoverpa armigera. PEST MANAGEMENT SCIENCE 2021; 77:2129-2141. [PMID: 33336552 DOI: 10.1002/ps.6242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 12/07/2020] [Accepted: 12/17/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND Carboxylesterase (CarE) is a major class of enzyme involved in the detoxification of toxic xenobiotics in various insect species. Previous work has shown that the carboxylesterase gene CarE001G found in Helicoverpa armigera is more active and can metabolize synthesized pyrethroids, such as β-cypermethrin, one of the commonly used commercial insecticides for lepidopteran pest control. In addition, CarE001G is very special as it has a very specific glycine-rich region located adjacent to its C-terminal. But whether mutations in this unique sequence can change the biochemistry and function of CarE001G are unknown. RESULTS In this study, four variants of CarE001G with different deletions in the glycine-rich region were obtained and functionally expressed in Escherichia coli. The recombinant proteins were purified and confirmed by Western blot and mass spectrometry analyses. These mutant enzymes showed high catalytic efficiency toward the model substrate α-naphthyl acetate. Inhibition study showed that β-cypermethrin had relatively strong inhibition on CarE activities. In vitro metabolism assay showed that the mutant enzymes significantly enhanced their metabolic activities toward β-cypermethrin with specific activities between 4.0 and 5.6 nmol L-1 min-1 mg-1 protein. Molecular docking analyses consistently demonstrated that deletion mutations in the glycine-rich region may facilitate the anchoring of the β-cypermethrin molecule in the active binding pocket of the mutant enzymes. CONCLUSION The data show that deletion mutations can cause qualitative change in the capacity of CarEs in the detoxification of β-cypermethrin. This indicates that deletion mutations in the glycine-rich region may have the potential to cause synthesized pyrethroid (SP) resistance in H. armigera in the future. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Li-Sha Bai
- College of Plant Protection, Northwest A&F University, Yangling, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, China
| | - Jing-Jing Xu
- College of Plant Protection, Northwest A&F University, Yangling, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, China
| | - Cai-Xia Zhao
- College of Plant Protection, Northwest A&F University, Yangling, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, China
| | - Ya-Li Chang
- College of Plant Protection, Northwest A&F University, Yangling, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, China
| | - Yan-Ling Dong
- College of Plant Protection, Northwest A&F University, Yangling, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, China
| | - Kai-Ge Zhang
- College of Plant Protection, Northwest A&F University, Yangling, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, China
| | - Yong-Qiang Li
- College of Plant Protection, Northwest A&F University, Yangling, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, China
| | - Yi-Ping Li
- College of Plant Protection, Northwest A&F University, Yangling, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, China
| | - Zhi-Qing Ma
- College of Plant Protection, Northwest A&F University, Yangling, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, China
| | - Xi-Li Liu
- College of Plant Protection, Northwest A&F University, Yangling, China
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest A&F University, Yangling, China
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6
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Gao H, Zhu X, Li G, Liu E, Shen Y, Zhao S, Ge F. RNA Sequencing Analysis of Metopolophium dirhodum (Walker) (Hemiptera: Aphididae) Reveals the Mechanism Underlying Insecticide Resistance. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2021. [DOI: 10.3389/fsufs.2021.639841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Xinjiang (XJ) and Ningxia (NX) provinces are important agricultural regions in western China. Aphids are one kind of the most devastating pests in both the provinces. Aphids are typical phloem-feeding insects distributed worldwide and can severely damage crops. In this study, two representative Metopolophium dirhodum (Walker) (Hemiptera: Aphididae) populations were collected from the typical agricultural regions of XJ and NX, respectively for a high-throughput transcriptome sequencing analysis. A total of 5,265 differentially expressed genes (DEGs) were identified. The functional annotation of DEGs and the identification of enriched pathways indicated many of the DEGs are involved in processes related to energy metabolism, development, and insecticide resistance. Furthermore, an investigation of insecticide toxicity revealed the NX population is more resistant to insecticide treatments than the XJ population. Thus, the transcriptome data generated in present study can be used for functional gene characterization relevant to aphid development, metabolism, environmental adaptation, and insecticide resistance.
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7
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Rork AM, Xu S, Attygalle A, Renner T. Primary Metabolism co-Opted for Defensive Chemical Production in the Carabid Beetle, Harpalus pensylvanicus. J Chem Ecol 2021; 47:334-349. [PMID: 33689113 DOI: 10.1007/s10886-021-01253-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 12/18/2020] [Accepted: 02/02/2021] [Indexed: 11/25/2022]
Abstract
Of the approximately one million described insect species, ground beetles (Coleoptera: Carabidae) have long captivated the attention of evolutionary biologists due to the diversity of defensive compounds they synthesize. Produced using defensive glands in the abdomen, ground beetle chemicals represent over 250 compounds including predator-deterring formic acid, which has evolved as a defensive strategy at least three times across Insecta. Despite being a widespread method of defense, formic acid biosynthesis is poorly understood in insects. Previous studies have suggested that the folate cycle of one-carbon (C1) metabolism, a pathway involved in nucleotide biosynthesis, may play a key role in defensive-grade formic acid production in ants. Here, we report on the defensive gland transcriptome of the formic acid-producing ground beetle Harpalus pensylvanicus. The full suite of genes involved in the folate cycle of C1 metabolism are significantly differentially expressed in the defensive glands of H. pensylvanicus when compared to gene expression profiles in the rest of the body. We also find support for two additional pathways potentially involved in the biosynthesis of defensive-grade formic acid, the kynurenine pathway and the methionine salvage cycle. Additionally, we have found an array of differentially expressed genes in the secretory lobes involved in the biosynthesis and transport of cofactors necessary for formic acid biosynthesis, as well as genes presumably involved in the detoxification of secondary metabolites including formic acid. We also provide insight into the evolution of the predominant gene family involved in the folate cycle (MTHFD) and suggest that high expression of folate cycle genes rather than gene duplication and/or neofunctionalization may be more important for defensive-grade formic acid biosynthesis in H. pensylvanicus. This provides the first evidence in Coleoptera and one of a few examples in Insecta of a primary metabolic process being co-opted for defensive chemical biosynthesis. Our results shed light on potential mechanisms of formic acid biosynthesis in the defensive glands of a ground beetle and provide a foundation for further studies into the evolution of formic acid-based chemical defense strategies in insects.
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Affiliation(s)
- Adam M Rork
- Department of Entomology, The Pennsylvania State University, 501 ASI Building, University Park, PA, 16802, USA.
| | - Sihang Xu
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, NJ, 07030, USA
| | - Athula Attygalle
- Department of Chemistry and Chemical Biology, Stevens Institute of Technology, Hoboken, NJ, 07030, USA
| | - Tanya Renner
- Department of Entomology, The Pennsylvania State University, 501 ASI Building, University Park, PA, 16802, USA
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Tang B, Cheng Y, Li Y, Li W, Ma Y, Zhou Q, Lu K. Adipokinetic hormone enhances CarE-mediated chlorpyrifos resistance in the brown planthopper, Nilaparvata lugens. INSECT MOLECULAR BIOLOGY 2020; 29:511-522. [PMID: 32686884 DOI: 10.1111/imb.12659] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 07/07/2020] [Accepted: 07/09/2020] [Indexed: 06/11/2023]
Abstract
Adipokinetic hormone (AKH), the principal stress-responsive neurohormone in insects, has been implicated in insect responses to insecticides. However, the functionality of AKH and its mode of signalling in insecticide resistance are unknown. Herein, we demonstrated that the enhanced activity of carboxylesterases (CarEs) is involved in the chlorpyrifos resistance in Nilaparvata lugens [brown planthopper (BPH)]. Chlorpyrifos exposure significantly induced the expression of AKH and its receptor AKHR in the susceptible BPH (Sus), and these two AKH signalling genes were over-expressed in the chlorpyrifos-resistant strain (Res) compared to Sus. RNA interference (RNAi) against AKH or AKHR decreased the CarE activity and suppressed the BPH's resistance to chlorpyrifos in Res. Conversely, AKH peptide injection elevated the CarE activity and enhanced the BPH's survival against chlorpyrifos in Sus. Furthermore, five CarE genes were identified to be positively affected by the AKH pathway using RNAi and AKH injection. Among these CarE genes, CarE and Esterase E4-1 were found to be over-expressed in Res compared to Sus, and knockdown of either gene decreased the BPH's resistance to chlorpyrifos. In conclusion, AKH plays a role in enhancing chlorpyrifos resistance in the BPH through positive influence on the expression of CarE genes and CarE enzyme activity.
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Affiliation(s)
- B Tang
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Y Cheng
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Y Li
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - W Li
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Y Ma
- School of Agriculture, Sun Yat-sen University, Guangzhou, China
| | - Q Zhou
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - K Lu
- State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
- College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
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Li YQ, Bai LS, Zhao CX, Xu JJ, Sun ZJ, Dong YL, Li DX, Liu XL, Ma ZQ. Functional Characterization of Two Carboxylesterase Genes Involved in Pyrethroid Detoxification in Helicoverpa armigera. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:3390-3402. [PMID: 32096985 DOI: 10.1021/acs.jafc.9b06690] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Insect carboxylesterases are major enzymes involved in metabolism of xenobiotics including insecticides. Two carboxylesterase genes, CarE001A and CarE001H, were cloned from the destructive agricultural pest Helicoverpa armigera. Quantitative real-time polymerase chain reaction showed that CarE001A and CarE001H were predominantly expressed in fat body and midgut, respectively; developmental expression analyses found that the expression levels of both CarEs were significantly higher in fifth-instar larvae than in other life stages. Recombinant CarE001A and CarE001H expressed in the Escherichia coli exhibited high enzymatic activity toward α-naphthyl acetate. Inhibition assays showed that organophosphates had strong inhibition on CarEs activity compared to pyrethroids. Metabolism assays indicated that CarE001A and CarE001H were able to metabolize β-cypermethrin and λ-cyhalothrin. Homology modeling and molecular docking analyses demonstrated that β-cypermethrin could fit nicely into the active pocket of both carboxylesterases. These results suggested that CarE001A and CarE001H could play important roles in the detoxification of pyrehtroids in H. armigera.
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Affiliation(s)
- Yong-Qiang Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Li-Sha Bai
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Cai-Xia Zhao
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jing-Jing Xu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Zhong-Juan Sun
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yan-Ling Dong
- College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - De-Xian Li
- College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xi-Li Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Zhi-Qing Ma
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest A&F University, Yangling, Shaanxi 712100, China
- Engineering and Research Center of Biological Pesticide of Shaanxi Province, Yangling, Shaanxi 712100, China
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10
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Paula DP, Menger J, Andow DA, Koch RL. Diverse patterns of constitutive and inducible overexpression of detoxifying enzyme genes among resistant Aphis glycines populations. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2020; 164:100-114. [PMID: 32284115 DOI: 10.1016/j.pestbp.2019.12.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 11/21/2019] [Accepted: 12/30/2019] [Indexed: 06/11/2023]
Abstract
Understanding the mechanisms of pyrethroid resistance is essential to the effective management of pesticide resistance in Aphis glycines Matsumura (Hemiptera: Aphididae). We mined putative detoxifying enzyme genes in the draft genome sequence of A. glycines for cytochrome oxidase P450 (CYP), glutathione-S-transferase (GST) and esterases (E4 and carboxylesterases-CES). Aphids from clonal populations resistant to pyrethroids from three sites in Minnesota, USA, were screened against a diagnostic LC99 concentration of either λ-cyhalothrin or bifenthrin and detoxifying enzyme genes expression in survivors was analyzed by qPCR. Their expression profiles were compared relative to a susceptible clonal population. We found 61 CYP (40 full-length), seven GST (all full-length), seven E4 (five full-length) and three CES (two full-length) genes, including 24 possible pseudogenes. The detoxifying enzymes had different expression profiles across resistant aphid populations, possibly reflecting differences in the genetic background and pyrethroid selection pressures as the number of constitutively overexpressed detoxifying enzyme genes was correlated with the level of resistance. Our findings will strengthen the understanding of the pyrethroid resistance mechanisms in A. glycines.
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Affiliation(s)
- Débora Pires Paula
- Embrapa Genetic Resources and Biotechnology, Parque Estação Biológica, W5 Norte, P.O. Box 02372, Brasília, DF 70770-917, Brazil.
| | - James Menger
- Department of Entomology, University of Minnesota, 219 Hodson Hall, 1980 Folwell Ave., St. Paul, MN 55108, USA
| | - David A Andow
- Department of Entomology, University of Minnesota, 219 Hodson Hall, 1980 Folwell Ave., St. Paul, MN 55108, USA
| | - Robert L Koch
- Department of Entomology, University of Minnesota, 219 Hodson Hall, 1980 Folwell Ave., St. Paul, MN 55108, USA
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11
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Cui G, Sun R, Veeran S, Shu B, Yuan H, Zhong G. Combined transcriptomic and proteomic analysis of harmine on Spodoptera frugiperda Sf9 cells to reveal the potential resistance mechanism. J Proteomics 2020; 211:103573. [DOI: 10.1016/j.jprot.2019.103573] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 10/08/2019] [Accepted: 10/29/2019] [Indexed: 11/26/2022]
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12
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Bai LS, Zhao CX, Xu JJ, Feng C, Li YQ, Dong YL, Ma ZQ. Identification and biochemical characterization of carboxylesterase 001G associated with insecticide detoxification in Helicoverpa armigera. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2019; 157:69-79. [PMID: 31153479 DOI: 10.1016/j.pestbp.2019.03.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Revised: 03/03/2019] [Accepted: 03/13/2019] [Indexed: 06/09/2023]
Abstract
Carboxylesterases (CarEs) are a major class of detoxification enzymes involved in insecticide resistance in various insect species. In this study, a novel CarE 001G was isolated from the cotton bollworm Helicoverpa armigera, one of the most destructive agricultural insect pests. The open reading frame of 001G has 2244 nucleotides and putatively encodes 747 amino acid residues. The deduced CarE possessed the highly conserved catalytic triads(Ser-Glu-His) and pentapeptide motifs (Gly-X-Ser-X-Gly), suggesting 001G is biologically active. The truncated 001G was successfully expressed in Escherichia coli, and the recombinant proteins were purified and tested. The enzyme kinetic assay showed the purified proteins could catalyze two model substrates, α-naphthyl acetate and β-naphthyl acetate, with a kcat of 8.8 and 2.3 s-1, a Km of 9.6 and 16.2 μM, respectively. The inhibition study with pyrethroid, organophosphate and neonicotinoid insecticides showed different inhibition profile against the purified CarE. The HPLC assay demonstrated that the purified proteins were able to metabolize β-cypermethrin, λ-cyhalothrin and fenvalerate insecticides, exhibiting respective specific activities of 1.7, 1.4 and 0.5 nM/min/mg protein. However, the purified proteins were not able to metabolize the chlorpyrifos, parathion-methyl, paraoxon-ethyl and imidacloprid. The modeling and docking analyses consistently demonstrated that the pyrethroid molecule fits snugly into the catalytic pocket of the CarE 001G. Collectively, our results suggest that 001G may play a role in pyrethroids detoxification in H. armigera.
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Affiliation(s)
- Li-Sha Bai
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Cai-Xia Zhao
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Jing-Jing Xu
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Chuan Feng
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Yong-Qiang Li
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China.
| | - Yan-Ling Dong
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China
| | - Zhi-Qing Ma
- College of Plant Protection, Northwest A&F University, Yangling 712100, Shaanxi, China.
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Yang Y, Gao J, Zhang Y, Xu W, Hao Y, Xu Z, Tao L. Natural pyrethrins induce autophagy of HepG2 cells through the activation of AMPK/mTOR pathway. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2018; 241:1091-1097. [PMID: 30029317 DOI: 10.1016/j.envpol.2018.06.049] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 05/29/2018] [Accepted: 06/16/2018] [Indexed: 06/08/2023]
Abstract
Natural pyrethrins, one kind of insects' neural toxin, have been used worldwide for the control of pests of crops, livestock, and human beings. However, their specific mechanisms of action are incompletely understood and hence further investigation is required. Here we used a series of experiments including colony formation, fluorescent staining, western blotting, enzyme activity detection, immunofluorescence analysis, and real-time quantitative PCR (QPCR) to investigate whether natural pyrethrins (0-40 μg/mL) are able to modulate autophagy process through AMPK/mTOR signaling pathway, in order to reveal their cytotoxic mechanisms. The results showed that natural pyrethrins markedly inhibited the proliferation of HepG2 cells in both concentration- and time-dependent manners. Particularly, natural pyrethrins could induce the resulting autophagosome, and the intensification of LC3-II formation and translocation, the accumulation of Beclin-1 and the reduction of p62 and thus autophagy. We clarified that natural pyrethrins induced the abnormal level of oxidation reduction metabolism, leading to mitochondrial permeability transition pore (mPTP) opening, ATP depletion and mitochondria eliminating by autophagy. Moreover, the phosphorylation levels of AMPK were significantly enhanced, and the mTOR and p70s6k phosphorylation were drastically decreased. These results showed that natural pyrethrins induced autophagy of HepG2 cells and activation of the AMPK/mTOR signaling pathway might have potential risk to human health.
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Affiliation(s)
- Yun Yang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Jufang Gao
- College of Life and Environmental Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Yang Zhang
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Wenping Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Youwu Hao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Zhiping Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Liming Tao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China.
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Wang K, Huang Y, Li X, Chen M. Functional Analysis of a Carboxylesterase Gene Associated With Isoprocarb and Cyhalothrin Resistance in Rhopalosiphum padi (L.). Front Physiol 2018; 9:992. [PMID: 30090072 PMCID: PMC6068260 DOI: 10.3389/fphys.2018.00992] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 07/06/2018] [Indexed: 12/03/2022] Open
Abstract
Carboxylesterase (CarE) is an important class of detoxification enzymes involved in insecticide resistance. However, the molecular mechanism of CarE-mediated insecticide resistance in Rhopalosiphum padi, a problematic agricultural pest, remains largely unknown. In the present study, an isoprocarb-resistant (IS-R) strain and a cyhalothrin-resistant (CY-R) strain were successively selected from a susceptible (SS) strain of R. padi. The enzyme activity indicated that enhanced carboxylesterase activity contributes to isoprocarb and cyhalothrin resistance. The expression levels of putative CarE genes were examined and compared among IS-R, CY-R, and SS strains, and only the R. padi carboxylesterase gene (RpCarE) was significantly over expressed in both the IS-R and CY-R strains compared to the SS strain. The coding region of the RpCarE gene was cloned and expressed in Escherichia coli. The purified RpCarE protein was able to catalyze the model substrate, α-naphtyl acetate (Kcat = 5.50 s-1; Km = 42.98 μM). HPLC assay showed that the recombinant protein had hydrolase activity against isoprocarb and cyhalothrin. The modeling and docking analyses consistently indicated these two insecticide molecules fit snugly into the catalytic pocket of RpCarE. Taken together, these findings suggest that RpCarE plays an important role in metabolic resistance to carbamates and pyrethroids in R. padi.
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Affiliation(s)
- Kang Wang
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Yanna Huang
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Xinyu Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, Northwest A&F University, Yangling, China
| | - Maohua Chen
- State Key Laboratory of Crop Stress Biology for Arid Areas, Key Laboratory of Crop Pest Integrated Pest Management on the Loess Plateau of Ministry of Agriculture, Northwest A&F University, Yangling, China
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Luo X, Zhang D, Zhou X, Du J, Zhang S, Liu Y. Cloning and characterization of a pyrethroid pesticide decomposing esterase gene, Est3385, from Rhodopseudomonas palustris PSB-S. Sci Rep 2018; 8:7384. [PMID: 29743662 PMCID: PMC5943319 DOI: 10.1038/s41598-018-25734-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 04/26/2018] [Indexed: 11/18/2022] Open
Abstract
Full length open reading frame of pyrethroid detoxification gene, Est3385, contains 963 nucleotides. This gene was identified and cloned based on the genome sequence of Rhodopseudomonas palustris PSB-S available at the GneBank. The predicted amino acid sequence of Est3385 shared moderate identities (30–46%) with the known homologous esterases. Phylogenetic analysis revealed that Est3385 was a member in the esterase family I. Recombinant Est3385 was heterologous expressed in E. coli, purified and characterized for its substrate specificity, kinetics and stability under various conditions. The optimal temperature and pH for Est3385 were 35 °C and 6.0, respectively. This enzyme could detoxify various pyrethroid pesticides and degrade the optimal substrate fenpropathrin with a Km and Vmax value of 0.734 ± 0.013 mmol·l−1 and 0.918 ± 0.025 U·µg−1, respectively. No cofactor was found to affect Est3385 activity but substantial reduction of enzymatic activity was observed when metal ions were applied. Taken together, a new pyrethroid degradation esterase was identified and characterized. Modification of Est3385 with protein engineering toolsets should enhance its potential for field application to reduce the pesticide residue from agroecosystems.
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Affiliation(s)
- Xiangwen Luo
- Key Laboratory of Pest Management of Horticultural Crop of Hunan Province, Hunan Plant Protection Institute, Hunan Academy of Agricultural Science, Changsha, 410125, China
| | - Deyong Zhang
- Key Laboratory of Pest Management of Horticultural Crop of Hunan Province, Hunan Plant Protection Institute, Hunan Academy of Agricultural Science, Changsha, 410125, China
| | - Xuguo Zhou
- Department of Entomology, University of Kentucky, Lexington, KY, 40546, USA
| | - Jiao Du
- Key Laboratory of Pest Management of Horticultural Crop of Hunan Province, Hunan Plant Protection Institute, Hunan Academy of Agricultural Science, Changsha, 410125, China
| | - Songbai Zhang
- Key Laboratory of Pest Management of Horticultural Crop of Hunan Province, Hunan Plant Protection Institute, Hunan Academy of Agricultural Science, Changsha, 410125, China.
| | - Yong Liu
- Key Laboratory of Pest Management of Horticultural Crop of Hunan Province, Hunan Plant Protection Institute, Hunan Academy of Agricultural Science, Changsha, 410125, China.
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Feng X, Li M, Liu N. Carboxylesterase genes in pyrethroid resistant house flies, Musca domestica. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2018; 92:30-39. [PMID: 29154832 DOI: 10.1016/j.ibmb.2017.11.007] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 10/23/2017] [Accepted: 11/13/2017] [Indexed: 06/07/2023]
Abstract
Carboxylesterases are one of the major enzyme families involved in the detoxification of pyrethroids. Up-regulation of carboxylesterase genes is thought to be a major component of insecticide resistant mechanisms in insects. Based on the house fly transcriptome and genome database, a total of 39 carboxylesterase genes of different functional clades have been identified in house flies. In this study, eleven of these genes were found to be significantly overexpressed in the resistant ALHF house fly strain compared with susceptible aabys and wild-type CS strains. Eight up-regulated carboxylesterase genes with their expression levels were further induced to a higher level in response to permethrin treatments, indicating that constitutive and inductive overexpression of carboxylesterases are co-responsible for the enhanced detoxification of insecticides. Spatial expression studies revealed these up-regulated genes to be abundantly distributed in fat bodies and genetically mapped on autosome 2 or 3 of house flies, and their expression could be regulated by factors on autosome 1, 2 and 5. Taken together, these results demonstrate that multiple carboxylesterase genes are co-upregulated in resistant house flies, providing further evidence for their involvement in the detoxification of insecticides and development of insecticide resistance.
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Affiliation(s)
- Xuechun Feng
- Department of Entomology and Plant Pathology, Auburn University, Auburn, AL 36849, USA
| | - Ming Li
- Department of Entomology and Plant Pathology, Auburn University, Auburn, AL 36849, USA; Department of Entomology, University of California, Riverside, CA 92521, USA
| | - Nannan Liu
- Department of Entomology and Plant Pathology, Auburn University, Auburn, AL 36849, USA.
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17
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Gong YH, Ai GM, Li M, Shi XY, Diao QY, Gao XW. Functional characterization of carboxylesterase gene mutations involved in Aphis gossypii resistance to organophosphate insecticides. INSECT MOLECULAR BIOLOGY 2017; 26:702-714. [PMID: 28799241 DOI: 10.1111/imb.12331] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Carboxylesterases (CarEs) play an important role in detoxifying insecticides in insects. Over-expression and structural modification of CarEs have been implicated in the development of organophosphate (OP) insecticide resistance in insects. A previous study identified four nonsynonymous mutations (resulting in four amino acid residue substitutions) in the open reading frame of the carboxylesterase gene of resistant cotton aphids compared to the omethoate susceptible strain, which has possibly influenced the development of resistance to omethoate (a systemic OP insecticide). The current study further characterized the function of these mutations, both alone and in combination, in the hydrolysis of OP insecticides. The metabolism results suggest that the combination of four mutations, mainly existing in the laboratory-selected OP-resistant cotton aphid population, increased the OP hydrolase activity (approximately twofold) at the cost of detectable carboxylesterase activity. The functional studies of single or multiple mutations suggest the positive effect of H104R, A128V and T333P on the acquisition of OP hydrolase activity, especially the combination of H104R with A128V or T333P. K484R substitution decreased both the OP hydrolase activity and the CarE activity, indicating that this mutation primarily drives the negative effect on the acquisition of OP hydrolase activity amongst these four mutations in the resistant strain. The modelling and docking results are basically consistent with the metabolic results, which strongly suggest that the structural gene modification is the molecular basis for the OP resistance in this laboratory-selected cotton aphid strain.
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Affiliation(s)
- Y-H Gong
- Department of Entomology, China Agricultural University, Beijing, China
- State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | - G-M Ai
- State Key Laboratory of Microbial Resources, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - M Li
- University of California, Riverside, CA, USA
| | - X-Y Shi
- Department of Entomology, China Agricultural University, Beijing, China
| | - Q-Y Diao
- Department of Honeybee Protection and Biosafety, Institute of Apicultural Research, Chinese Academy of Agricultural Science, Beijing, China
| | - X-W Gao
- Department of Entomology, China Agricultural University, Beijing, China
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Faucon F, Gaude T, Dusfour I, Navratil V, Corbel V, Juntarajumnong W, Girod R, Poupardin R, Boyer F, Reynaud S, David JP. In the hunt for genomic markers of metabolic resistance to pyrethroids in the mosquito Aedes aegypti: An integrated next-generation sequencing approach. PLoS Negl Trop Dis 2017; 11:e0005526. [PMID: 28379969 PMCID: PMC5393893 DOI: 10.1371/journal.pntd.0005526] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2016] [Revised: 04/17/2017] [Accepted: 03/25/2017] [Indexed: 12/22/2022] Open
Abstract
BACKGROUND The capacity of Aedes mosquitoes to resist chemical insecticides threatens the control of major arbovirus diseases worldwide. Until alternative control tools are widely deployed, monitoring insecticide resistance levels and identifying resistance mechanisms in field mosquito populations is crucial for implementing appropriate management strategies. Metabolic resistance to pyrethroids is common in Aedes aegypti but the monitoring of the dynamics of resistant alleles is impeded by the lack of robust genomic markers. METHODOLOGY/PRINCIPAL FINDINGS In an attempt to identify the genomic bases of metabolic resistance to deltamethrin, multiple resistant and susceptible populations originating from various continents were compared using both RNA-seq and a targeted DNA-seq approach focused on the upstream regions of detoxification genes. Multiple detoxification enzymes were over transcribed in resistant populations, frequently associated with an increase in their gene copy number. Targeted sequencing identified potential promoter variations associated with their over transcription. Non-synonymous variations affecting detoxification enzymes were also identified in resistant populations. CONCLUSION /SIGNIFICANCE This study not only confirmed the role of gene copy number variations as a frequent cause of the over expression of detoxification enzymes associated with insecticide resistance in Aedes aegypti but also identified novel genomic resistance markers potentially associated with their cis-regulation and modifications of their protein structure conformation. As for gene transcription data, polymorphism patterns were frequently conserved within regions but differed among continents confirming the selection of different resistance factors worldwide. Overall, this study paves the way of the identification of a comprehensive set of genomic markers for monitoring the spatio-temporal dynamics of the variety of insecticide resistance mechanisms in Aedes aegypti.
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Affiliation(s)
- Frederic Faucon
- Laboratoire d'Ecologie Alpine (LECA), CNRS, UMR 5553, 2233 rue de la piscine Grenoble, France
- Université Grenoble—Alpes, France
- Environmental and Systems Biology (BEeSy), Université Grenoble Alpes, Grenoble, France
| | - Thierry Gaude
- Laboratoire d'Ecologie Alpine (LECA), CNRS, UMR 5553, 2233 rue de la piscine Grenoble, France
- Université Grenoble—Alpes, France
- Environmental and Systems Biology (BEeSy), Université Grenoble Alpes, Grenoble, France
| | - Isabelle Dusfour
- Unité d’Entomologie Médicale, Institut Pasteur de la Guyane, 23 avenue Pasteur, Cayenne, France
| | | | - Vincent Corbel
- Institut de Recherche pour le Développement (IRD), Maladies Infectieuses et Vecteurs, Ecologie, Génétique, Evolution et Contrôle (IRD 224-CNRS 5290 UM1-UM2), Montpellier, France
- Department of Entomology, Faculty of Agriculture, Kasetsart University, Lat Yao Chatuchak Bangkok, Thailand
| | - Waraporn Juntarajumnong
- Department of Entomology, Faculty of Agriculture, Kasetsart University, Lat Yao Chatuchak Bangkok, Thailand
- Center for Advanced Studies for Agriculture and Food, Kasetsart University Institute for Advanced Studies, Kasetsart University, Bangkok Thailand (CASAF, NRU-KU, Thailand)
| | - Romain Girod
- Unité d’Entomologie Médicale, Institut Pasteur de la Guyane, 23 avenue Pasteur, Cayenne, France
| | | | - Frederic Boyer
- Laboratoire d'Ecologie Alpine (LECA), CNRS, UMR 5553, 2233 rue de la piscine Grenoble, France
- Université Grenoble—Alpes, France
- Environmental and Systems Biology (BEeSy), Université Grenoble Alpes, Grenoble, France
| | - Stephane Reynaud
- Laboratoire d'Ecologie Alpine (LECA), CNRS, UMR 5553, 2233 rue de la piscine Grenoble, France
- Université Grenoble—Alpes, France
- Environmental and Systems Biology (BEeSy), Université Grenoble Alpes, Grenoble, France
| | - Jean-Philippe David
- Laboratoire d'Ecologie Alpine (LECA), CNRS, UMR 5553, 2233 rue de la piscine Grenoble, France
- Université Grenoble—Alpes, France
- Environmental and Systems Biology (BEeSy), Université Grenoble Alpes, Grenoble, France
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Bacterial Expression and Kinetic Analysis of Carboxylesterase 001D from Helicoverpa armigera. Int J Mol Sci 2016; 17:493. [PMID: 27049381 PMCID: PMC4848949 DOI: 10.3390/ijms17040493] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Revised: 03/24/2016] [Accepted: 03/28/2016] [Indexed: 11/18/2022] Open
Abstract
Carboxylesterasesare an important class of detoxification enzymes involved in insecticide resistance in insects. A subgroup of Helicoverpa armigera esterases, known as Clade 001, was implicated in organophosphate and pyrethroid insecticide resistance due to their overabundance in resistant strains. In this work, a novel carboxylesterasegene 001D of H. armigera from China was cloned, which has an open reading frame of 1665 nucleotides encoding 554 amino acid residues. We used a series of fusion proteins to successfully express carboxylesterase 001D in Escherichia coli. Three different fusion proteins were generated and tested. The enzyme kinetic assay towards 1-naphthyl acetate showed all three purified fusion proteins are active with a Kcat between 0.35 and 2.29 s−1, and a Km between 7.61 and 19.72 μM. The HPLC assay showed all three purified fusion proteins had low but measurable hydrolase activity towards β-cypermethrin and fenvalerate insecticides (specific activities ranging from 0.13 to 0.67 μM·min−1·(μM−1·protein)). The enzyme was stable up to 40 °C and at pH 6.0–11.0. The results imply that carboxylesterase 001D is involved in detoxification, and this moderate insecticide hydrolysis may suggest that overexpression of the gene to enhance insecticide sequestration is necessary to allow carboxylesterases to confer resistance to these insecticides in H. armigera.
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Lalouette L, Pottier MA, Wycke MA, Boitard C, Bozzolan F, Maria A, Demondion E, Chertemps T, Lucas P, Renault D, Maibeche M, Siaussat D. Unexpected effects of sublethal doses of insecticide on the peripheral olfactory response and sexual behavior in a pest insect. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2016; 23:3073-3085. [PMID: 26686856 DOI: 10.1007/s11356-015-5923-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Accepted: 12/03/2015] [Indexed: 06/05/2023]
Abstract
Pesticides have long been used as the main solution to limit agricultural pests, but their widespread use resulted in chronic or diffuse environmental pollutions, development of insect resistances, and biodiversity reduction. The effects of low residual doses of these chemical products on organisms that affect both targeted species (crop pests) but also beneficial insects became a major concern, particularly because low doses of pesticides can induce unexpected positive--also called hermetic--effects on insects, leading to surges in pest population growth at greater rate than what would have been observed without pesticide application. The present study aimed to examine the effects of sublethal doses of deltamethrin, one of the most used synthetic pyrethroids, known to present a residual activity and persistence in the environment, on the peripheral olfactory system and sexual behavior of a major pest insect, the cotton leafworm Spodoptera littoralis. We highlighted here a hormetic effect of sublethal dose of deltamethrin on the male responses to sex pheromone, without any modification of their response to host-plant odorants. We also identified several antennal actors potentially involved in this hormetic effect and in the antennal detoxification or antennal stress response of/to deltamethrin exposure.
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Affiliation(s)
- Lisa Lalouette
- Sorbonne Université, UPMC-Paris 6, Institute of Ecology and Environnemental Sciences of Paris-Sensory Ecology Department, 7 Quai Saint Bernard, F-75005, Paris, France
| | - Marie-Anne Pottier
- Sorbonne Université, UPMC-Paris 6, Institute of Ecology and Environnemental Sciences of Paris-Sensory Ecology Department, 7 Quai Saint Bernard, F-75005, Paris, France
| | - Marie-Anne Wycke
- Sorbonne Université, UPMC-Paris 6, Institute of Ecology and Environnemental Sciences of Paris-Sensory Ecology Department, 7 Quai Saint Bernard, F-75005, Paris, France
| | - Constance Boitard
- Sorbonne Université, UPMC-Paris 6, Institute of Ecology and Environnemental Sciences of Paris-Sensory Ecology Department, 7 Quai Saint Bernard, F-75005, Paris, France
| | - Françoise Bozzolan
- Sorbonne Université, UPMC-Paris 6, Institute of Ecology and Environnemental Sciences of Paris-Sensory Ecology Department, 7 Quai Saint Bernard, F-75005, Paris, France
| | - Annick Maria
- Sorbonne Université, UPMC-Paris 6, Institute of Ecology and Environnemental Sciences of Paris-Sensory Ecology Department, 7 Quai Saint Bernard, F-75005, Paris, France
| | - Elodie Demondion
- Institute of Ecology and Environnemental Sciences of Paris-Sensory Ecology Department, INRA, Route de Saint-Cyr, F-78000, Versailles, France
| | - Thomas Chertemps
- Sorbonne Université, UPMC-Paris 6, Institute of Ecology and Environnemental Sciences of Paris-Sensory Ecology Department, 7 Quai Saint Bernard, F-75005, Paris, France
| | - Philippe Lucas
- Institute of Ecology and Environnemental Sciences of Paris-Sensory Ecology Department, INRA, Route de Saint-Cyr, F-78000, Versailles, France
| | - David Renault
- Université de Rennes 1, UMR CNRS 6553 Ecobio, 263 Avenue du Gal Leclerc, CS 74205, 35042, Rennes, France
| | - Martine Maibeche
- Sorbonne Université, UPMC-Paris 6, Institute of Ecology and Environnemental Sciences of Paris-Sensory Ecology Department, 7 Quai Saint Bernard, F-75005, Paris, France
| | - David Siaussat
- Sorbonne Université, UPMC-Paris 6, Institute of Ecology and Environnemental Sciences of Paris-Sensory Ecology Department, 7 Quai Saint Bernard, F-75005, Paris, France.
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Chertemps T, Younus F, Steiner C, Durand N, Coppin CW, Pandey G, Oakeshott JG, Maïbèche M. An antennal carboxylesterase from Drosophila melanogaster, esterase 6, is a candidate odorant-degrading enzyme toward food odorants. Front Physiol 2015; 6:315. [PMID: 26594178 PMCID: PMC4633494 DOI: 10.3389/fphys.2015.00315] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2015] [Accepted: 10/19/2015] [Indexed: 01/04/2023] Open
Abstract
Reception of odorant molecules within insect olfactory organs involves several sequential steps, including their transport through the sensillar lymph, interaction with the respective sensory receptors, and subsequent inactivation. Odorant-degrading enzymes (ODEs) putatively play a role in signal dynamics by rapid degradation of odorants in the vicinity of the receptors, but this hypothesis is mainly supported by in vitro results. We have recently shown that an extracellular carboxylesterase, esterase-6 (EST-6), is involved in the physiological and behavioral dynamics of the response of Drosophila melanogaster to its volatile pheromone ester, cis-vaccenyl acetate. However, as the expression pattern of the Est-6 gene in the antennae is not restricted to the pheromone responding sensilla, we tested here if EST-6 could play a broader function in the antennae. We found that recombinant EST-6 is able to efficiently hydrolyse several volatile esters that would be emitted by its natural food in vitro. Electrophysiological comparisons of mutant Est-6 null flies and a control strain (on the same genetic background) showed that the dynamics of the antennal response to these compounds is influenced by EST-6, with the antennae of the null mutants showing prolonged activity in response to them. Antennal responses to the strongest odorant, pentyl acetate, were then studied in more detail, showing that the repolarization dynamics were modified even at low doses but without modification of the detection threshold. Behavioral choice experiments with pentyl acetate also showed differences between genotypes; attraction to this compound was observed at a lower dose among the null than control flies. As EST-6 is able to degrade various bioactive odorants emitted by food and plays a role in the response to these compounds, we hypothesize a role as an ODE for this enzyme toward food volatiles.
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Affiliation(s)
- Thomas Chertemps
- Sorbonne Universités UPMC - Univ Paris 06, Institut d'Ecologie et des Sciences de l'Environnement de Paris, INRA, CNRS, IRD, UPEC Paris, France
| | - Faisal Younus
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Land and Water Flagship Canberra, ACT, Australia ; Research School of Chemistry, ANU College of Physical and Mathematical Sciences, Australian National University Canberra, ACT, Australia
| | - Claudia Steiner
- Sorbonne Universités UPMC - Univ Paris 06, Institut d'Ecologie et des Sciences de l'Environnement de Paris, INRA, CNRS, IRD, UPEC Paris, France
| | - Nicolas Durand
- Sorbonne Universités UPMC - Univ Paris 06, Institut d'Ecologie et des Sciences de l'Environnement de Paris, INRA, CNRS, IRD, UPEC Paris, France
| | - Chris W Coppin
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Land and Water Flagship Canberra, ACT, Australia
| | - Gunjan Pandey
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Land and Water Flagship Canberra, ACT, Australia
| | - John G Oakeshott
- Commonwealth Scientific and Industrial Research Organisation (CSIRO) Land and Water Flagship Canberra, ACT, Australia
| | - Martine Maïbèche
- Sorbonne Universités UPMC - Univ Paris 06, Institut d'Ecologie et des Sciences de l'Environnement de Paris, INRA, CNRS, IRD, UPEC Paris, France
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22
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Cheng L, Du Y, Hu J, Jiao D, Li J, Zhou Z, Xu Q, Li F. PROTEOMIC ANALYSIS OF UBIQUITINATED PROTEINS FROM DELTAMETHRIN-RESISTANT AND SUSCEPTIBLE STRAINS OF THE DIAMONDBACK MOTH, Plutella Xylostella L. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2015; 90:70-88. [PMID: 25983007 DOI: 10.1002/arch.21245] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Ubiquitin, a small protein consisting of 76 amino acids, acts in protein degradation, DNA repair, signal transduction, transcriptional regulation, and receptor control through endocytosis. Using proteomics, we compared the differentially ubiquitinated proteins between a deltamethrin-resistant (DR) strain and a deltamethrin-sensitive (DS) strain in third-instar larvae of the diamondback moth. We used polyubiquitin affinity beads to enrich ubiquitinated proteins and then performed one-dimensional SDS-PAGE separation and mass spectrometric identification. In the DR strain, We found 17 proteins that were upregulated (relative to the DS strain), including carbonic anhydrase family members, ADP ribosylation factor 102F CG11027-PA, protein kinase 61C, phospholipase A2 , dihydrolipoamide dehydrogenase, tyrosine hydroxylase, and heat shock proteins, and five proteins that were downregulated in the DS strain, including carboxylesterase and DNA cytosine-5 methyltransferase. These results were also verified by qPCR. The differentially ubiquitinated proteins/enzymes were mainly responsible for protein binding, catalytic activity, and molecular transducer activity. These results improve our understanding of the relationship between protein ubiquitination and the deltamethrin stress response.
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Affiliation(s)
- Luogen Cheng
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Life Science, Nanjing Normal University, Nanjing, PR China
| | - Yaqiong Du
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Life Science, Nanjing Normal University, Nanjing, PR China
| | - Junli Hu
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Life Science, Nanjing Normal University, Nanjing, PR China
| | - Dongxu Jiao
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Life Science, Nanjing Normal University, Nanjing, PR China
| | - Jin Li
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Life Science, Nanjing Normal University, Nanjing, PR China
| | - Zhou Zhou
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, School of Life Science, Nanjing Normal University, Nanjing, PR China
| | - Qin Xu
- School of Energy and Mechanical Engineering, Nanjing Normal University, Nanjing, PR China
| | - Fengliang Li
- Institute of Plant Protection, Guizhou Academy of Agriculture Science, Guiyang, PR China
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23
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Faucon F, Dusfour I, Gaude T, Navratil V, Boyer F, Chandre F, Sirisopa P, Thanispong K, Juntarajumnong W, Poupardin R, Chareonviriyaphap T, Girod R, Corbel V, Reynaud S, David JP. Identifying genomic changes associated with insecticide resistance in the dengue mosquito Aedes aegypti by deep targeted sequencing. Genome Res 2015. [PMID: 26206155 PMCID: PMC4561493 DOI: 10.1101/gr.189225.115] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The capacity of mosquitoes to resist insecticides threatens the control of diseases such as dengue and malaria. Until alternative control tools are implemented, characterizing resistance mechanisms is crucial for managing resistance in natural populations. Insecticide biodegradation by detoxification enzymes is a common resistance mechanism; however, the genomic changes underlying this mechanism have rarely been identified, precluding individual resistance genotyping. In particular, the role of copy number variations (CNVs) and polymorphisms of detoxification enzymes have never been investigated at the genome level, although they can represent robust markers of metabolic resistance. In this context, we combined target enrichment with high-throughput sequencing for conducting the first comprehensive screening of gene amplifications and polymorphisms associated with insecticide resistance in mosquitoes. More than 760 candidate genes were captured and deep sequenced in several populations of the dengue mosquito Ae. aegypti displaying distinct genetic backgrounds and contrasted resistance levels to the insecticide deltamethrin. CNV analysis identified 41 gene amplifications associated with resistance, most affecting cytochrome P450s overtranscribed in resistant populations. Polymorphism analysis detected more than 30,000 variants and strong selection footprints in specific genomic regions. Combining Bayesian and allele frequency filtering approaches identified 55 nonsynonymous variants strongly associated with resistance. Both CNVs and polymorphisms were conserved within regions but differed across continents, confirming that genomic changes underlying metabolic resistance to insecticides are not universal. By identifying novel DNA markers of insecticide resistance, this study opens the way for tracking down metabolic changes developed by mosquitoes to resist insecticides within and among populations.
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Affiliation(s)
- Frederic Faucon
- Laboratoire d'Ecologie Alpine (LECA), CNRS, UMR 5553, 38041 Grenoble Cedex 9, France; Université Grenoble-Alpes, 38041 Grenoble Cedex 9, France; Environmental and Systems Biology (BEeSy), Université Grenoble-Alpes, 38041 Grenoble Cedex 9, France
| | - Isabelle Dusfour
- Unité d'Entomologie Médicale, Institut Pasteur de la Guyane, 97306 Cayenne Cedex, France
| | - Thierry Gaude
- Laboratoire d'Ecologie Alpine (LECA), CNRS, UMR 5553, 38041 Grenoble Cedex 9, France; Université Grenoble-Alpes, 38041 Grenoble Cedex 9, France; Environmental and Systems Biology (BEeSy), Université Grenoble-Alpes, 38041 Grenoble Cedex 9, France
| | - Vincent Navratil
- Pôle Rhône Alpes de Bioinformatique, Université Lyon 1, 69100 Villeurbanne, France
| | - Frederic Boyer
- Laboratoire d'Ecologie Alpine (LECA), CNRS, UMR 5553, 38041 Grenoble Cedex 9, France; Université Grenoble-Alpes, 38041 Grenoble Cedex 9, France; Environmental and Systems Biology (BEeSy), Université Grenoble-Alpes, 38041 Grenoble Cedex 9, France
| | - Fabrice Chandre
- Institut de Recherche pour le Développement (IRD), Maladies Infectieuses et Vecteurs, Ecologie, Génétique, Evolution et Contrôle (IRD 224-CNRS 5290 UM1-UM2), 34394 Montpellier Cedex 5, France
| | - Patcharawan Sirisopa
- Department of Entomology, Faculty of Agriculture, Kasetsart University, Lat Yao Chatuchak Bangkok 10900, Thailand; Center for Advanced Studies for Agriculture and Food, Kasetsart University Institute for Advanced Studies, Kasetsart University, Bangkok 10900, Thailand (CASAF, NRU-KU, Thailand)
| | - Kanutcharee Thanispong
- Bureau of Vector Borne Diseases, Department of Disease Control, Ministry of Public Health, Mueang, Nonthaburi 11000, Thailand
| | - Waraporn Juntarajumnong
- Department of Entomology, Faculty of Agriculture, Kasetsart University, Lat Yao Chatuchak Bangkok 10900, Thailand; Center for Advanced Studies for Agriculture and Food, Kasetsart University Institute for Advanced Studies, Kasetsart University, Bangkok 10900, Thailand (CASAF, NRU-KU, Thailand)
| | - Rodolphe Poupardin
- Vector Biology Group, Liverpool School of Tropical Medicine, L35QA Liverpool, United Kingdom
| | - Theeraphap Chareonviriyaphap
- Department of Entomology, Faculty of Agriculture, Kasetsart University, Lat Yao Chatuchak Bangkok 10900, Thailand; Center for Advanced Studies for Agriculture and Food, Kasetsart University Institute for Advanced Studies, Kasetsart University, Bangkok 10900, Thailand (CASAF, NRU-KU, Thailand)
| | - Romain Girod
- Unité d'Entomologie Médicale, Institut Pasteur de la Guyane, 97306 Cayenne Cedex, France
| | - Vincent Corbel
- Institut de Recherche pour le Développement (IRD), Maladies Infectieuses et Vecteurs, Ecologie, Génétique, Evolution et Contrôle (IRD 224-CNRS 5290 UM1-UM2), 34394 Montpellier Cedex 5, France; Department of Entomology, Faculty of Agriculture, Kasetsart University, Lat Yao Chatuchak Bangkok 10900, Thailand; Center for Advanced Studies for Agriculture and Food, Kasetsart University Institute for Advanced Studies, Kasetsart University, Bangkok 10900, Thailand (CASAF, NRU-KU, Thailand)
| | - Stephane Reynaud
- Laboratoire d'Ecologie Alpine (LECA), CNRS, UMR 5553, 38041 Grenoble Cedex 9, France; Université Grenoble-Alpes, 38041 Grenoble Cedex 9, France; Environmental and Systems Biology (BEeSy), Université Grenoble-Alpes, 38041 Grenoble Cedex 9, France
| | - Jean-Philippe David
- Laboratoire d'Ecologie Alpine (LECA), CNRS, UMR 5553, 38041 Grenoble Cedex 9, France; Université Grenoble-Alpes, 38041 Grenoble Cedex 9, France; Environmental and Systems Biology (BEeSy), Université Grenoble-Alpes, 38041 Grenoble Cedex 9, France
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24
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Lü FG, Fu KY, Li Q, Guo WC, Ahmat T, Li GQ. Identification of carboxylesterase genes and their expression profiles in the Colorado potato beetle Leptinotarsa decemlineata treated with fipronil and cyhalothrin. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2015; 122:86-95. [PMID: 26071812 DOI: 10.1016/j.pestbp.2014.12.015] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Revised: 11/12/2014] [Accepted: 12/15/2014] [Indexed: 06/04/2023]
Abstract
Based on the Leptinotarsa decemlineata transcriptome dataset and the GenBank sequences, 70 novel carboxylesterases and 2 acetylcholinesterases were found. The 72 members belong to a multifunctional carboxylesterase/cholinesterase superfamily (CCE). A phylogenetic tree including the 72 LdCCEs and the CCEs from Tribolium castaneum, Drosophila melanogaster and Apis mellifera revealed that all CCEs fell into three main phylogenetic groups: dietary/detoxification, hormone/semiochemical processing, and neurodevelopmental classes. Numbers of L. decemlineata CCEs in the three classes were 52, 12 and 8, respectively. The dietary/detoxification class includes two clades: coleopteran xenobiotic metabolizing and α-esterase type CCEs. CCEs in the two clades have independently expanded in L. decemlineata. The hormone/semiochemical processing class has three clades: integument CCEs, β- and pheromone CCEs and juvenile hormone CCEs. Integument CCEs in L. decemlineata have also expanded. The neurodevelopmental CCEs are implicated the most ancient class, containing acetylcholinesterase, neuroligin, neurotactin, glutactin, gliotactin and others. Among the 70 novel CCE genes, KM220566, KM220530, KM220576, KM220527 and KM220541 were fipronil-inducible, and KM220578, KM220566, KM220542, KM220564, KM220561, KM220554, KM220527, KM220538 and KM220541 were cyhalothrin-inducible. They were the candidates involving in insecticide detoxification. Moreover, our results also provided a platform to understand the functions and evolution of L. decemlineata CCE genes.
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Affiliation(s)
- Feng-Gong Lü
- Education Ministry Key Laboratory of Integrated Management of Crop Diseases and Pests, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
| | - Kai-Yun Fu
- Education Ministry Key Laboratory of Integrated Management of Crop Diseases and Pests, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
| | - Qian Li
- Education Ministry Key Laboratory of Integrated Management of Crop Diseases and Pests, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China
| | - Wen-Chao Guo
- Department of Plant Protection, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China
| | - Tursun Ahmat
- Department of Plant Protection, Xinjiang Academy of Agricultural Sciences, Urumqi 830091, China
| | - Guo-Qing Li
- Education Ministry Key Laboratory of Integrated Management of Crop Diseases and Pests, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China.
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25
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Yuan G, Li Y, Farnsworth CA, Coppin CW, Devonshire AL, Scott C, Russell RJ, Wu Y, Oakeshott JG. Isomer-specific comparisons of the hydrolysis of synthetic pyrethroids and their fluorogenic analogues by esterases from the cotton bollworm Helicoverpa armigera. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2015; 121:102-106. [PMID: 26047117 DOI: 10.1016/j.pestbp.2014.12.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 12/10/2014] [Indexed: 06/04/2023]
Abstract
The low aqueous solubility and chiral complexity of synthetic pyrethroids, together with large differences between isomers in their insecticidal potency, have hindered the development of meaningful assays of their metabolism and metabolic resistance to them. To overcome these problems, Shan and Hammock (2001) [7] therefore developed fluorogenic and more water-soluble analogues of all the individual isomers of the commonly used Type 2 pyrethroids, cypermethrin and fenvalerate. The analogues have now been used in several studies of esterase-based metabolism and metabolic resistance. Here we test the validity of these analogues by quantitatively comparing their hydrolysis by a battery of 22 heterologously expressed insect esterases with the hydrolysis of the corresponding pyrethroid isomers by these esterases in an HPLC assay recently developed by Teese et al. (2013) [14]. We find a strong, albeit not complete, correlation (r = 0.7) between rates for the two sets of substrates. The three most potent isomers tested were all relatively slowly degraded in both sets of data but three esterases previously associated with pyrethroid resistance in Helicoverpa armigera did not show higher activities for these isomers than did allelic enzymes derived from susceptible H. armigera. Given their amenability to continuous assays at low substrate concentrations in microplate format, and ready detection of product, we endorse the ongoing utility of the analogues in many metabolic studies of pyrethroids.
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Affiliation(s)
- G Yuan
- Key laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing 400716, China; Department of Entomology, College of Plant Protection, Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects (Ministry of Agriculture), Nanjing Agricultural University, Nanjing 210095, China
| | - Y Li
- Research and Development Centre of Biorational Pesticides, Northwest Agriculture and Forestry University, Yangling, China
| | - C A Farnsworth
- CSIRO Land & Water Flagship, ACT, Australia; School of Biological Sciences, Australian National University, ACT, Australia; Cotton Catchment Communities CRC, Narrabri, NSW, Australia
| | - C W Coppin
- CSIRO Land & Water Flagship, ACT, Australia
| | | | - C Scott
- CSIRO Land & Water Flagship, ACT, Australia
| | | | - Y Wu
- Department of Entomology, College of Plant Protection, Key Laboratory of Monitoring and Management of Crop Diseases and Pest Insects (Ministry of Agriculture), Nanjing Agricultural University, Nanjing 210095, China
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26
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Zhang J, Ge P, Li D, Guo Y, Zhu KY, Ma E, Zhang J. Two homologous carboxylesterase genes from Locusta migratoria with different tissue expression patterns and roles in insecticide detoxification. JOURNAL OF INSECT PHYSIOLOGY 2015; 77:1-8. [PMID: 25840107 DOI: 10.1016/j.jinsphys.2015.03.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2014] [Revised: 02/01/2015] [Accepted: 03/25/2015] [Indexed: 06/04/2023]
Abstract
Carboxylesterases (CarEs) play a crucial role in detoxification of xenobiotics and resistance to insecticides in insects. In this study, two cDNAs of CarE genes (LmCesA4 and LmCesA5) were sequenced from the migratory locust, Locusta migratoria. The cDNAs of LmCesA4 and LmCesA5 putatively encoded 538 and 470 amino acid residues, respectively. The deduced amino acid sequences of the two CarE genes showed 45.0% identities, possessed highly conserved catalytic triads (Ser-Glu-His), and clustered in phylogenetic analysis. These results suggest that they are homologous genes. Both CarE genes were expressed throughout the developmental stages. However, LmCesA4 was predominately expressed in the midgut (including the gastric caeca) and fat bodies, whereas LmCesA5 was mainly expressed in the gastric caeca. The in situ hybridization results showed that the transcripts of the two genes were localized in apical and basal regions of the columnar cells in the gastric caeca. Gene silencing followed by insecticide bioassay increased the mortalities of deltamethrin-, malathion-, and carbaryl-treated locusts by 29.5%, 31.0% and 20.4%, respectively, after the locusts were injected with LmCesA4 double-stranded RNA (dsRNA). In contrast, the injection of LmCesA5 dsRNA did not significantly increase the susceptibility of the locusts to any of these insecticides. These results suggest that these genes not only show different tissue expression patterns but also play different roles in insecticide detoxification.
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Affiliation(s)
- Jianqin Zhang
- Research Institute of Applied Biology, Shanxi University, Taiyuan, Shanxi 030006, China
| | - Pingting Ge
- Research Institute of Applied Biology, Shanxi University, Taiyuan, Shanxi 030006, China
| | - Daqi Li
- Research Institute of Applied Biology, Shanxi University, Taiyuan, Shanxi 030006, China
| | - Yaping Guo
- Research Institute of Applied Biology, Shanxi University, Taiyuan, Shanxi 030006, China
| | - Kun Yan Zhu
- Department of Entomology, 123 Waters Hall, Kansas State University, Manhattan, KS 66506, USA
| | - Enbo Ma
- Research Institute of Applied Biology, Shanxi University, Taiyuan, Shanxi 030006, China.
| | - Jianzhen Zhang
- Research Institute of Applied Biology, Shanxi University, Taiyuan, Shanxi 030006, China.
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27
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Xi J, Pan Y, Bi R, Gao X, Chen X, Peng T, Zhang M, Zhang H, Hu X, Shang Q. Elevated expression of esterase and cytochrome P450 are related with lambda-cyhalothrin resistance and lead to cross resistance in Aphis glycines Matsumura. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2015; 118:77-81. [PMID: 25752434 DOI: 10.1016/j.pestbp.2014.12.002] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Revised: 12/02/2014] [Accepted: 12/03/2014] [Indexed: 05/27/2023]
Abstract
A resistant strain of the Aphis glycines Matsumura (CRR) has developed 76.67-fold resistance to lambda-cyhalothrin compared with the susceptible (CSS) strain. Synergists piperonyl butoxide (PBO), S,S,S-Tributyltrithiophosphate (DEF) and triphenyl phosphate (TPP) dramatically increased the toxicity of lambda-cyhalothrin to the resistant strain. Bioassay results indicated that the CRR strain had developed high levels of cross-resistance to chlorpyrifos (11.66-fold), acephate (8.20-fold), cypermethrin (53.24-fold), esfenvalerate (13.83-fold), cyfluthrin (9.64-fold), carbofuran (14.60-fold), methomyl (9.32-fold) and bifenthrin (4.81-fold), but did not have cross-resistance to chlorfenapyr, imidacloprid, diafenthiuron, abamectin. The transcriptional levels of CYP6A2-like, CYP6A14-like and cytochrome b-c1 complex subunit 9-like increased significantly in the resistant strain than that in the susceptible. Similar trend were observed in the transcripts and DNA copy number of CarE and E4 esterase. Overall, these results demonstrate that increased esterase hydrolysis activity, combined with elevated cytochrome P450 monooxygenase detoxicatication, plays an important role in the high levels of lambda-cyhalothrin resistance and can cause cross-resistance to other insecticides in the CRR strain.
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Affiliation(s)
- Jinghui Xi
- College of Plant Science, Jilin University, Changchun 130062, China
| | - Yiou Pan
- College of Plant Science, Jilin University, Changchun 130062, China
| | - Rui Bi
- College of Plant Science, Jilin University, Changchun 130062, China
| | - Xiwu Gao
- Department of Entomology, China Agricultural University, Beijing 100193, China
| | - Xuewei Chen
- College of Plant Science, Jilin University, Changchun 130062, China; Department of Entomology, China Agricultural University, Beijing 100193, China
| | - Tianfei Peng
- College of Plant Science, Jilin University, Changchun 130062, China
| | - Min Zhang
- Department of Bioengineering, Zhengzhou University, Zhengzhou 450001, China
| | - Hua Zhang
- College of Plant Science, Jilin University, Changchun 130062, China
| | - Xiaoyue Hu
- College of Plant Science, Jilin University, Changchun 130062, China
| | - Qingli Shang
- College of Plant Science, Jilin University, Changchun 130062, China.
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28
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Younus F, Chertemps T, Pearce SL, Pandey G, Bozzolan F, Coppin CW, Russell RJ, Maïbèche-Coisne M, Oakeshott JG. Identification of candidate odorant degrading gene/enzyme systems in the antennal transcriptome of Drosophila melanogaster. INSECT BIOCHEMISTRY AND MOLECULAR BIOLOGY 2014; 53:30-43. [PMID: 25038463 DOI: 10.1016/j.ibmb.2014.07.003] [Citation(s) in RCA: 93] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Revised: 07/03/2014] [Accepted: 07/07/2014] [Indexed: 06/03/2023]
Abstract
The metabolism of volatile signal molecules by odorant degrading enzymes (ODEs) is crucial to the ongoing sensitivity and specificity of chemoreception in various insects, and a few specific esterases, cytochrome P450s, glutathione S-transferases (GSTs) and UDP-glycosyltransferases (UGTs) have previously been implicated in this process. Significant progress has been made in characterizing ODEs in Lepidoptera but very little is known about them in Diptera, including in Drosophila melanogaster, a major insect model. We have therefore carried out a transcriptomic analysis of the antennae of D. melanogaster in order to identify candidate ODEs. Virgin male and female and mated female antennal transcriptomes were determined by RNAseq. As with the Lepidoptera, we found that many esterases, cytochrome P450 enzymes, GSTs and UGTs are expressed in D. melanogaster antennae. As olfactory genes generally show selective expression in the antennae, a comparison to previously published transcriptomes for other tissues has been performed, showing preferential expression in the antennae for one esterase, JHEdup, one cytochrome P450, CYP308a1, and one GST, GSTE4. These largely uncharacterized enzymes are now prime candidates for ODE functions. JHEdup was expressed heterologously and found to have high catalytic activity against a chemically diverse group of known ester odorants for this species. This is a finding consistent with an ODE although it might suggest a general role in clearing several odorants rather than a specific role in clearing a particular odorant. Our findings do not preclude the possibility of odorant degrading functions for other antennally expressed esterases, P450s, GSTs and UGTs but, if so, they suggest that these enzymes also have additional functions in other tissues.
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Affiliation(s)
- Faisal Younus
- CSIRO Ecosystems Sciences, Black Mountain, Clunies Ross Street, Canberra, ACT 0200, Australia; Research School of Chemistry, Australian National University, Canberra, ACT 0200, Australia
| | - Thomas Chertemps
- Université Pierre et Marie Curie, Institut d'Ecologie et des Sciences de l'Environnement de Paris, F-75252 Paris, France
| | - Stephen L Pearce
- CSIRO Ecosystems Sciences, Black Mountain, Clunies Ross Street, Canberra, ACT 0200, Australia; Research School of Chemistry, Australian National University, Canberra, ACT 0200, Australia
| | - Gunjan Pandey
- CSIRO Ecosystems Sciences, Black Mountain, Clunies Ross Street, Canberra, ACT 0200, Australia
| | - Françoise Bozzolan
- Université Pierre et Marie Curie, Institut d'Ecologie et des Sciences de l'Environnement de Paris, F-75252 Paris, France
| | - Christopher W Coppin
- CSIRO Ecosystems Sciences, Black Mountain, Clunies Ross Street, Canberra, ACT 0200, Australia
| | - Robyn J Russell
- CSIRO Ecosystems Sciences, Black Mountain, Clunies Ross Street, Canberra, ACT 0200, Australia
| | - Martine Maïbèche-Coisne
- Université Pierre et Marie Curie, Institut d'Ecologie et des Sciences de l'Environnement de Paris, F-75252 Paris, France
| | - John G Oakeshott
- CSIRO Ecosystems Sciences, Black Mountain, Clunies Ross Street, Canberra, ACT 0200, Australia.
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29
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Yang XQ, Liu JY, Li XC, Chen MH, Zhang YL. Key Amino Acid Associated with Acephate Detoxification by Cydia pomonella Carboxylesterase Based on Molecular Dynamics with Alanine Scanning and Site-Directed Mutagenesis. J Chem Inf Model 2014; 54:1356-70. [DOI: 10.1021/ci500159q] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
| | | | - Xian Chun Li
- Department
of Entomology, The University of Arizona, Tucson, Arizona 85721, United States
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30
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Organophosphate and pyrethroid hydrolase activities of mutant Esterases from the cotton bollworm Helicoverpa armigera. PLoS One 2013; 8:e77685. [PMID: 24204917 PMCID: PMC3812244 DOI: 10.1371/journal.pone.0077685] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2013] [Accepted: 09/04/2013] [Indexed: 11/19/2022] Open
Abstract
Two mutations have been found in five closely related insect esterases (from four higher Diptera and a hymenopteran) which each confer organophosphate (OP) hydrolase activity on the enzyme and OP resistance on the insect. One mutation converts a Glycine to an Aspartate, and the other converts a Tryptophan to a Leucine in the enzymes’ active site. One of the dipteran enzymes with the Leucine mutation also shows enhanced activity against pyrethroids. Introduction of the two mutations in vitro into eight esterases from six other widely separated insect groups has also been reported to increase substantially the OP hydrolase activity of most of them. These data suggest that the two mutations could contribute to OP, and possibly pyrethroid, resistance in a variety of insects. We therefore introduced them in vitro into eight Helicoverpa armigera esterases from a clade that has already been implicated in OP and pyrethroid resistance. We found that they do not generally enhance either OP or pyrethroid hydrolysis in these esterases but the Aspartate mutation did increase OP hydrolysis in one enzyme by about 14 fold and the Leucine mutation caused a 4–6 fold increase in activity (more in one case) of another three against some of the most insecticidal isomers of fenvalerate and cypermethrin. The Aspartate enzyme and one of the Leucine enzymes occur in regions of the H. armigera esterase isozyme profile that have been previously implicated in OP and pyrethroid resistance, respectively.
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31
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Abdullah L, Evans JE, Montague H, Reed JM, Moser A, Crynen G, Gonzalez A, Zakirova Z, Ross I, Mullan C, Mullan M, Ait-Ghezala G, Crawford F. Chronic elevation of phosphocholine containing lipids in mice exposed to Gulf War agents pyridostigmine bromide and permethrin. Neurotoxicol Teratol 2013; 40:74-84. [PMID: 24140745 DOI: 10.1016/j.ntt.2013.10.002] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2013] [Revised: 10/02/2013] [Accepted: 10/08/2013] [Indexed: 01/15/2023]
Abstract
For two decades, 25% of the veterans who served in the 1991 Gulf War (GW) have been living with Gulf War Illness (GWI), a chronic multisymptom illness. Evidence suggests that brain structures involved in cognitive function may be affected in GWI. Gulf War agents such as the acetylcholinesterase (AChE) inhibitor pyridostigmine bromide (PB) and the pesticide permethrin (PER) are considered key etiogenic factors in GWI. We therefore developed a mouse model of GW agent exposure by co-administering PB and PER and showed that this model exhibits cognitive impairment and anxiety, and increased astrogliosis at chronic post-exposure time-points. Since GW agents inhibit AChE, we hypothesized that PB+PER exposure will modulate phosphatidylcholine (PC) and sphingomyelin (SM), which are reservoirs of phosphocholine required for endogenous ACh synthesis. Lipidomic analyses showed that PC and SM were elevated in the brains of exposed compared to control mice. Brain ether PC (ePC) species were increased but lyso-platelet activating factors (lyso-PAF) that are products of ePC were decreased in exposed animals compared to controls. Catalase expression (a marker for peroxisomes) was increased in GW agent exposed mice compared to controls. Ether PC and lyso-PAF modulation was also evident in the plasma of GW agent exposed mice compared to controls. These studies suggest peroxisomal and lysosomal dysfunction in the brain at a chronic post-exposure timepoint following GW agent exposure. Our studies provide a new direction for GWI research, which will be useful for developing suitable therapies for treating GWI.
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Affiliation(s)
- Laila Abdullah
- Roskamp Institute, 2040 Whitfield Ave, Sarasota, FL 34243, United States.
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Yang X, Zhang Y. Effect of temperature and sorbitol in improving the solubility of carboxylesterases protein CpCE-1 from Cydia pomonella and biochemical characterization. Appl Microbiol Biotechnol 2013; 97:10423-33. [DOI: 10.1007/s00253-013-5236-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Accepted: 09/09/2013] [Indexed: 11/29/2022]
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Oakeshott JG, Farnsworth CA, East PD, Scott C, Han Y, Wu Y, Russell RJ. How many genetic options for evolving insecticide resistance in heliothine and spodopteran pests? PEST MANAGEMENT SCIENCE 2013; 69:889-96. [PMID: 23526801 PMCID: PMC3818700 DOI: 10.1002/ps.3542] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2012] [Revised: 03/07/2013] [Accepted: 03/22/2013] [Indexed: 05/26/2023]
Abstract
The widely accepted paradigm for the development of insecticide resistance in field populations of insects is of selection for one or a very few genes of major effect. Limited genetic mapping data for organophosphate and pyrethroid resistance in heliothine and spodopteran pests generally agrees with this paradigm. However, other biochemical and transcriptomic data suggest a more complex set of changes in multiple P450 and esterase gene/enzyme systems in resistant strains of these species. We discuss possible explanations for this paradox, including the likely embedding of these genes in regulatory cascades and emerging evidence for their arrangement in large clusters of closely related genes. We conclude that there could indeed be an unusually large number of genetic options for evolving resistance in these species.
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Teese MG, Farnsworth CA, Li Y, Coppin CW, Devonshire AL, Scott C, East P, Russell RJ, Oakeshott JG. Heterologous expression and biochemical characterisation of fourteen esterases from Helicoverpa armigera. PLoS One 2013; 8:e65951. [PMID: 23799064 PMCID: PMC3684599 DOI: 10.1371/journal.pone.0065951] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Accepted: 04/29/2013] [Indexed: 11/18/2022] Open
Abstract
Esterases have recurrently been implicated in insecticide resistance in Helicoverpa armigera but little is known about the underlying molecular mechanisms. We used a baculovirus system to express 14 of 30 full-length esterase genes so far identified from midgut cDNA libraries of this species. All 14 produced esterase isozymes after native PAGE and the isozymes for seven of them migrated to two regions of the gel previously associated with both organophosphate and pyrethroid resistance in various strains. Thirteen of the enzymes obtained in sufficient yield for further analysis all showed tight binding to organophosphates and low but measurable organophosphate hydrolase activity. However there was no clear difference in activity between the isozymes from regions associated with resistance and those from elsewhere in the zymogram, or between eight of the isozymes from a phylogenetic clade previously associated with resistance in proteomic and quantitative rtPCR experiments and five others not so associated. By contrast, the enzymes differed markedly in their activities against nine pyrethroid isomers and the enzymes with highest activity for the most insecticidal isomers were from regions of the gel and, in some cases, the phylogeny that had previously been associated with pyrethroid resistance. Phospholipase treatment confirmed predictions from sequence analysis that three of the isozymes were GPI anchored. This unusual feature among carboxylesterases has previously been suggested to underpin an association that some authors have noted between esterases and resistance to the Cry1Ac toxin from Bacillus thuringiensis. However these three isozymes did not migrate to the zymogram region previously associated with Cry1Ac resistance.
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Affiliation(s)
- Mark G. Teese
- CSIRO Ecosystem Sciences, Canberra, Australia
- School of Chemistry, Australian National University, Canberra, Australia
| | - Claire A. Farnsworth
- CSIRO Ecosystem Sciences, Canberra, Australia
- School of Biological Sciences, Australian National University, Canberra, Australia
| | - Yongqiang Li
- CSIRO Ecosystem Sciences, Canberra, Australia
- Research and Development Centre of Biorational Pesticides, College of Plant Protection, Northwest A&F University, Yangling, People’s Republic of China
| | | | | | - Colin Scott
- CSIRO Ecosystem Sciences, Canberra, Australia
| | - Peter East
- CSIRO Ecosystem Sciences, Canberra, Australia
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