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Sun Y, Wang P, Abouzaid M, Zhou H, Liu H, Yang P, Lin Y, Hull JJ, Ma W. Nanomaterial-wrapped dsCYP15C1, a potential RNAi-based strategy for pest control against Chilo suppressalis. PEST MANAGEMENT SCIENCE 2020; 76:2483-2489. [PMID: 32061016 DOI: 10.1002/ps.5789] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 01/26/2020] [Accepted: 02/14/2020] [Indexed: 06/10/2023]
Abstract
BACKGROUND Although the utility of double-stranded RNA (dsRNA)-mediated knockdown as an environmentally friendly pest management strategy has gained traction in recent years, its overall efficacy has been limited by poor stability and limited cellular uptake. Encapsulation of dsRNAs with various nanomaterials, however, has shown promise in overcoming these limitations. This study sought to investigate the biological efficacy of an oral dsRNA nanomaterial mixture targeting the CYP15C1 gene product in the economically important rice pest, Chilo suppressalis. RESULTS A putative CYP15C1 ortholog was cloned from C. suppressalis midguts. The transcript is downregulated in fifth-instar larvae and is most highly expressed in heads. RNA interference (RNAi)-mediated knockdown of CsCYP15C1 was associated with significantly increased mortality. More importantly, feeding a dsRNA-nanomaterial mixture significantly increased larval mortality compared with feeding dsRNA alone. CONCLUSION A critical role for CsCYP15C1 function in molting is supported by sequence similarity with known juvenile hormone epoxidases, its expression profile, and abnormal molting phenotypes associated with RNA-mediated knockdown. CsCYP15C1 is thus a prime target for controlling C. suppressalis. Furthermore, RNAi-mediated characterization of candidate gene function can be enhanced by incorporating an enveloping nanomaterial. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Yajie Sun
- National Key Laboratory of Crop Genetic Improvement, National Centre of Plant Gene Research, Wuhan, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Peipei Wang
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Mostafa Abouzaid
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Hao Zhou
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Hui Liu
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Pan Yang
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yongjun Lin
- National Key Laboratory of Crop Genetic Improvement, National Centre of Plant Gene Research, Wuhan, China
| | - J Joe Hull
- U.S. Arid Land Agricultural Research Center, U.S. Agricultural Research Service, Department of Agriculture, Maricopa, AZ, USA
| | - Weihua Ma
- National Key Laboratory of Crop Genetic Improvement, National Centre of Plant Gene Research, Wuhan, China
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
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Walsh TK, Joussen N, Tian K, McGaughran A, Anderson CJ, Qiu X, Ahn SJ, Bird L, Pavlidi N, Vontas J, Ryu J, Rasool A, Barony Macedo I, Tay WT, Zhang Y, Whitehouse MEA, Silvie PJ, Downes S, Nemec L, Heckel DG. Multiple recombination events between two cytochrome P450 loci contribute to global pyrethroid resistance in Helicoverpa armigera. PLoS One 2018; 13:e0197760. [PMID: 30383872 PMCID: PMC6211633 DOI: 10.1371/journal.pone.0197760] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2017] [Accepted: 08/10/2018] [Indexed: 12/20/2022] Open
Abstract
The cotton bollworm, Helicoverpa armigera (Hübner) is one of the most serious insect pest species to evolve resistance against many insecticides from different chemical classes. This species has evolved resistance to the pyrethroid insecticides across its native range and is becoming a truly global pest after establishing in South America and having been recently recorded in North America. A chimeric cytochrome P450 gene, CYP337B3, has been identified as a resistance mechanism for resistance to fenvalerate and cypermethrin. Here we show that this resistance mechanism is common around the world with at least eight different alleles. It is present in South America and has probably introgressed into its closely related native sibling species, Helicoverpa zea. The different alleles of CYP337B3 are likely to have arisen independently in different geographic locations from selection on existing diversity. The alleles found in Brazil are those most commonly found in Asia, suggesting a potential origin for the incursion of H. armigera into the Americas.
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Affiliation(s)
- Thomas K. Walsh
- Black Mountain Laboratories, Commonwealth Scientific and Industrial Research Organisation, Acton, Australian Capital Territory, Australia
| | - Nicole Joussen
- Department of Entomology, Max Planck Institute for Chemical Ecology, Jena, Germany
| | - Kai Tian
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Angela McGaughran
- Black Mountain Laboratories, Commonwealth Scientific and Industrial Research Organisation, Acton, Australian Capital Territory, Australia
- School of BioSciences, University of Melbourne, Melbourne, Victoria, Australia
| | - Craig J. Anderson
- Black Mountain Laboratories, Commonwealth Scientific and Industrial Research Organisation, Acton, Australian Capital Territory, Australia
- Biological and Environmental Sciences, University of Stirling, Stirling, United Kingdom
| | - Xinghui Qiu
- State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Seung-Joon Ahn
- Horticultural and Herbal Crop Environment Division, National Institute of Horticultural and Herbal Science, Suwon, Korea
| | - Lisa Bird
- Tamworth Agricultural Institute, New South Wales Department of Primary Industry, Calala, New South Wales, Australia
| | - Nena Pavlidi
- Department of Biology, University of Crete, Rethymno, Greece
| | - John Vontas
- Laboratory of Pesticide Science, Agricultural University of Athens, Athens, Greece
| | - Jaeeun Ryu
- Black Mountain Laboratories, Commonwealth Scientific and Industrial Research Organisation, Acton, Australian Capital Territory, Australia
| | - Akhtar Rasool
- Insect Molecular Biology Laboratory, National Institute for Biotechnology and Genetic Engineering, Faisalabad, Pakistan
| | - Isabella Barony Macedo
- Faculdade de Farmácia, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
| | - Wee Tek Tay
- Black Mountain Laboratories, Commonwealth Scientific and Industrial Research Organisation, Acton, Australian Capital Territory, Australia
| | - Yongjun Zhang
- Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, China
| | | | - Pierre Jean Silvie
- Agroécologie et intensification durable des cultures annuelles, Centre de coopération internationale en recherche agronomique pour le développement, Montpellier, France
| | - Sharon Downes
- Australian Cotton Research Institute, Narrabri, New South Wales, Australia
| | - Lori Nemec
- Australian Cotton Research Institute, Narrabri, New South Wales, Australia
| | - David G. Heckel
- Department of Entomology, Max Planck Institute for Chemical Ecology, Jena, Germany
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Zhao C, Song G, Duan H, Tang T, Wang C, Qiu L. Heterologous expression of Helicoverpa armigera cytochrome P450 CYP6B7 in Pichia pastoris and interactions of CYP6B7 with insecticides. PEST MANAGEMENT SCIENCE 2017; 73:1866-1872. [PMID: 28195395 DOI: 10.1002/ps.4552] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 02/08/2017] [Accepted: 02/08/2017] [Indexed: 06/06/2023]
Abstract
BACKGROUND Previous studies indicated that constitutive over-expression of cytochrome P450 CYP6B7 was involved in fenvalerate resistance in Helicoverpa armigera. In this study, the CYP6B7 gene from H. armigera (namely HaCYP6B7), was heterologously expressed in Pichia pastoris GS115. A vector pPICZA-HaCYP6B7 was constructed and transformed into P. pastoris GS115, the transformant of pPICZA-HaCYP6B7-GS115 was then cultured and induced by 1% (v/v) methanol and the heterologous expression of HaCYP6B7 protein in P. pastoris was confirmed by SDS-PAGE and western blot. RESULTS Microsomes containing the expressed HaCYP6B7 showed activities against model substrate p-nitroanisole and 7-ethoxycoumarin, with p-nitroanisole O-demethylation (PNOD) and 7-ethoxycoumarin O-deethylation (ECOD) activities of 15.66- and 4.75-fold of the control, respectively. Moreover, it showed degradation activities against the insecticides bifenthrin, fenvalerate and chlorpyrifos, with clearance activities of 6.88-, 1.49- and 2.27-fold of the control, respectively. The interactions of HaCYP6B7 with insecticides were further confirmed by molecular docking in silico with binding scores of 5.450, 5.295 and 2.197 between putative HaCYP6B7 protein and bifenthrin, fenvalerate and chlorpyrifos, respectively. CONCLUSION The results of present study provided more direct and important evidence on the role of HaCYP6B7 conferring pyrethroid resistance in H. armigera. © 2017 Society of Chemical Industry.
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Affiliation(s)
- Chunqing Zhao
- College of Science, China Agricultural University, Beijing, China
- College of Plant Protection, Nanjing Agricultural University, Nanjing, China
| | - Genmiao Song
- College of Science, China Agricultural University, Beijing, China
| | - Hongxia Duan
- College of Science, China Agricultural University, Beijing, China
| | - Tao Tang
- College of Science, China Agricultural University, Beijing, China
- Institute of Plant Protection, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Chen Wang
- College of Science, China Agricultural University, Beijing, China
| | - Lihong Qiu
- College of Science, China Agricultural University, Beijing, China
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Chen X, Zhang Y. Identification and characterization of NADPH-dependent cytochrome P450 reductase gene and cytochrome b5 gene from Plutella xylostella: Possible involvement in resistance to beta-cypermethrin. Gene 2015; 558:208-14. [DOI: 10.1016/j.gene.2014.12.053] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2014] [Revised: 10/20/2014] [Accepted: 12/25/2014] [Indexed: 01/27/2023]
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Cifuentes D, Chynoweth R, Guillén J, De la Rúa P, Bielza P. Novel cytochrome P450 genes, CYP6EB1 and CYP6EC1, are over-expressed in acrinathrin-resistant Frankliniella occidentalis (Thysanoptera: Thripidae). JOURNAL OF ECONOMIC ENTOMOLOGY 2012; 105:1006-1018. [PMID: 22812142 DOI: 10.1603/ec11335] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Control of Frankliniella occidentalis (Pergande) is a serious problem for agriculture all over the world because of the limited range of insecticides that are available. Insecticide resistance in F. occidentalis has been reported for all major insecticide groups. Our previous studies showed that cytochrome P450-mediated detoxification is a major mechanism responsible for insecticide resistance in this pest. Degenerate polymerase chain reaction was used to identify P450 genes that might be involved in acrinathrin resistance, in a laboratory population of F. occidentalis. Associated sequences were classified as belonging to the CYP4 and CYP6 families. Real-time quantitative polymerase chain reaction analyses revealed that two genes, CYP6EB1 and CYP6EC1, were over-expressed in adults and L2 larvae of the resistant population, when compared with the susceptible population, suggesting their possible involvement in resistance to acrinathrin.
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Affiliation(s)
- D Cifuentes
- Departamento de Producción Vegetal, Instituto de Biotecnología Vegetal, Universidad Politécnica de Cartagena, Paseo Alfonso XIII48, 30203 Cartagena, Spain
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Insect cytochromes P450: Topology of structural elements predicted to govern catalytic versatility. J Inorg Biochem 2011; 105:1354-64. [DOI: 10.1016/j.jinorgbio.2011.05.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2011] [Revised: 04/26/2011] [Accepted: 05/02/2011] [Indexed: 01/30/2023]
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Mao YB, Cai WJ, Wang JW, Hong GJ, Tao XY, Wang LJ, Huang YP, Chen XY. Silencing a cotton bollworm P450 monooxygenase gene by plant-mediated RNAi impairs larval tolerance of gossypol. Nat Biotechnol 2007; 25:1307-13. [PMID: 17982444 DOI: 10.1038/nbt1352] [Citation(s) in RCA: 778] [Impact Index Per Article: 45.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2007] [Accepted: 09/27/2007] [Indexed: 11/08/2022]
Abstract
We identify a cytochrome P450 gene (CYP6AE14) from cotton bollworm (Helicoverpa armigera), which permits this herbivore to tolerate otherwise inhibitory concentrations of the cotton metabolite, gossypol. CYP6AE14 is highly expressed in the midgut and its expression correlates with larval growth when gossypol is included in the diet. When larvae are fed plant material expressing double-stranded RNA (dsRNA) specific to CYP6AE14, levels of this transcript in the midgut decrease and larval growth is retarded. Both effects are more dramatic in the presence of gossypol. As a glutathione-S-transferase gene (GST1) is silenced in GST1 dsRNA-expressing plants, feeding insects plant material expressing dsRNA may be a general strategy to trigger RNA interference and could find applications in entomological research and field control of insect pests.
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Affiliation(s)
- Ying-Bo Mao
- National Key Laboratory of Plant Molecular Genetics, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032, P.R. China
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Ranasinghe C, Hobbs AA. Induction of cytochrome P450 CYP6B7 and cytochrome b5 mRNAs from Helicoverpa armigera (Hubner) by pyrethroid insecticides in organ culture. INSECT MOLECULAR BIOLOGY 1999; 8:443-447. [PMID: 10620039 DOI: 10.1046/j.1365-2583.1999.00135.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
An organ culture system derived from Helicoverpa armigera has been used to study the expression of cytochrome P450 and cytochrome b5 mRNAs. Northern analysis showed that levels of the mRNAs for cytochrome P450s, CYP6B2, CYP6B6 and CYP6B7, and cytochrome b5 in control tissue were commensurate with those in the tissue of whole larvae. Substantial induction of cytochrome P450, CYP6B7 and cytochrome b5 mRNAs by alpha-pinene, and the pyrethroids, fenvalerate, cypermethrin and permethrin were observed in fat body culture. Neither mRNA was induced, either in midgut or integument organ cultures. In contrast, the relatively water-soluble compound phenobarbital, could induce CYP6B7 mRNA but not cytochrome b5 mRNA in fat body cultures. As for pyrethroids, phenobarbital had no effect on the other tissues in culture. These results confirm a previous conclusion that pyrethroids could induce CYP6B7 mRNA, which was based upon a very slight induction observed in living insects. Because many cytochrome P450 substrates can act as their inducers, these results support a previous conclusion that CYP6B7 could be the enzyme that is involved in pyrethroid resistance in H. armigera.
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Affiliation(s)
- C Ranasinghe
- Department of Biochemistry, University of Western Australia, Nedlands, Australia
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