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Gutiérrez-Cárdenas OG, Adán Á, Medina P, Muñoz D, Caballero P, Garzón A. A novel use of Nesidiocoris tenuis (Reuter) (Hemiptera: Miridae) as inoculative agent of baculoviruses. PEST MANAGEMENT SCIENCE 2023; 79:4274-4281. [PMID: 37345565 DOI: 10.1002/ps.7624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 06/19/2023] [Accepted: 06/22/2023] [Indexed: 06/23/2023]
Abstract
BACKGROUND Alphabaculoviruses are Lepidoptera-specific virulent pathogens that infect numerous pests, including the Spodoptera complex. Due to their low environmental persistence, the traditional use of Alphabaculoviruses as bioinsecticides consist in high-rate spray applications with repeated treatments. Several abiotic and biotic factors can foster its dispersion, promoting their persistence in the agroecosystem. Amongst biotic factors, predatory arthropods can disperse the viruses by excretion after preying on infected individuals. Therefore, this study focused on promoting predator's ingestion of nucleopolyhedrovirus (NPV)-treated diets, and the later exposition of the insect host to leaf surfaces contaminated with predator excreta. The virus-host-predator system studied was Spodoptera littoralis nucleopolyhedrovirus (SpliNPV), Spodoptera littoralis (Boisduval) and Nesidiocoris tenuis (Reuter). The infective potential of N. tenuis feces and the retention time of SpliNPV were assessed under laboratory conditions after feeding on treated diets (sucrose solution and Ephestia kuehniella eggs). RESULTS Mortality of S. littoralis larvae was lower via N. tenuis excretion than in positive control (spray application) in the first infection cycle, together with a delay in host death. In the second infection cycle, both SpliNPV-treated diets triggered 100% mortality. Both diets allowed the transmission of SpliNPV, with a faster excretion via sucrose solution compared to E. kuehniella eggs. SpliNPV remained in N. tenuis digestive tract and was viable after excretion at least for 9 days for both diets. CONCLUSIONS This study demonstrated the potential of the predator N. tenuis as inoculative agent of baculoviruses, representing a new alternative that, along with inundative applications, might contribute to improve pest management strategies. © 2023 The Authors. Pest Management Science published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Oscar Giovanni Gutiérrez-Cárdenas
- Unidad de Protección de Cultivos, Escuela Técnica Superior de Ingeniería Agronómica, Alimentaria y de Biosistemas, Universidad Politécnica de Madrid, Madrid, Spain
| | - Ángeles Adán
- Unidad de Protección de Cultivos, Escuela Técnica Superior de Ingeniería Agronómica, Alimentaria y de Biosistemas, Universidad Politécnica de Madrid, Madrid, Spain
| | - Pilar Medina
- Unidad de Protección de Cultivos, Escuela Técnica Superior de Ingeniería Agronómica, Alimentaria y de Biosistemas, Universidad Politécnica de Madrid, Madrid, Spain
| | - Delia Muñoz
- Institute for Multidisciplinary Research in Applied Biology, Universidad Pública de Navarra, Pamplona, Spain
| | - Primitivo Caballero
- Institute for Multidisciplinary Research in Applied Biology, Universidad Pública de Navarra, Pamplona, Spain
| | - Agustín Garzón
- Unidad de Protección de Cultivos, Escuela Técnica Superior de Ingeniería Agronómica, Alimentaria y de Biosistemas, Universidad Politécnica de Madrid, Madrid, Spain
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Zhang X, Zhang Y, Pan J, Gong C, Hu X. Identification and Characterization of BmNPV m6A Sites and Their Possible Roles During Viral Infection. Front Immunol 2022; 13:869313. [PMID: 35371067 PMCID: PMC8966388 DOI: 10.3389/fimmu.2022.869313] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 02/21/2022] [Indexed: 11/13/2022] Open
Abstract
Bombyx mori nucleopolyhedrovirus (BmNPV) is one of the most serious pathogens and causes serious economic losses in sericulture. At present, there is no epigenetic modification of BmNPV transcripts, especially of m6A, and this modification mediates diverse cellular and viral functions. This study showed that m6A modifications are widespread in BmNPV transcripts in virally infected cells and the identified m6A peaks with a conserved RRACH sequence. m6A sites predominantly appear in the coding sequences (CDS) and the 3'-end of CDS. About 37% of viral genes with m6A sites deleted from the viral genome did not produce any infectious virions in KOV-transfected cells. Among the viral genes related to replication and proliferation, ie-1 mRNA was identified with a higher m6A level than other viral genes. The m6A sites in the ie-1 mRNA may be negatively related to the protein expression. Viral replication was markedly inhibited in cells overexpressed with BmYTHDF3 in a dose-dependent manner, and a contrary effect was found in si-BmYTHDF3-transfected cells. Collectively, the identification of putative m6A modification in BmNPV transcripts provides a foundation for comprehensively understanding the viral infection, replication, and pathobiology in silkworms.
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Affiliation(s)
- Xing Zhang
- School of Biology & Basic Medical Science, Soochow University, Suzhou, China.,Agricultural Biotechnology Research Institute, Agricultural Biotechnology, and Ecological Research Institute, Soochow University, Suzhou, China
| | - Yaxin Zhang
- School of Biology & Basic Medical Science, Soochow University, Suzhou, China
| | - Jun Pan
- School of Biology & Basic Medical Science, Soochow University, Suzhou, China
| | - Chengliang Gong
- School of Biology & Basic Medical Science, Soochow University, Suzhou, China.,Agricultural Biotechnology Research Institute, Agricultural Biotechnology, and Ecological Research Institute, Soochow University, Suzhou, China
| | - Xiaolong Hu
- School of Biology & Basic Medical Science, Soochow University, Suzhou, China.,Agricultural Biotechnology Research Institute, Agricultural Biotechnology, and Ecological Research Institute, Soochow University, Suzhou, China
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Zanella-Saenz I, Herniou EA, Ibarra JE, Huerta-Arredondo IA, Del Rincón-Castro MC. Virulence and genetic characterization of six baculovirus strains isolated from different populations of Spodoptera frugiperda (Lepidoptera: Noctuidae). Arch Microbiol 2022; 204:108. [PMID: 34978619 DOI: 10.1007/s00203-021-02722-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 12/01/2021] [Accepted: 12/13/2021] [Indexed: 12/24/2022]
Abstract
Fall armyworm (FAW), Spodoptera frugiperda (Smith, 1797), is a polyphagous, voracious, and economically important agricultural pest. Biological control of FAW is a strategy that must be further explored. This study evaluated six baculovirus strains isolated from infected FAW larvae from Mexico, Argentina, Honduras, and the United States. Five alphabaculoviruses (SfNPV-An2, SfNPV-Arg, SfNPV-Fx, SfNPV-Ho, and SfNPV-Sin) and one betabaculovirus (SfGV-RV) were tested against FAW larvae, showing a wide diversity of virulence levels among strains when their estimated LC50s were compared, being SfNPV-Arg, SfNPV-Ho and SfNPV-Fx more virulent than SfNPV-An2, SfNPV-Sin, and SfGV-RV. To determine any virulence difference in vitro studies of these isolates, Sf9 cell cultures were used. Interestingly, only ODVs from four of the test SfNPV strains showed infectivity on Sf9 cell cultures, and some differences in virulence were observed. Genomic restriction analyses and partial sequences of lef-8, lef-9, and polh/granulin genes showed little variability among alphabaculoviruses, both, among them and with previously reported sequences. However, sequences from SfGV-RV were closer to previously reported sequences from the SfGV-VG008 strain than the SfGV-Arg and SfGV-VG014 strains. The great difference in the in vivo virulence was not correlated with great similarity among the isolates. The characterization of these six baculovirus isolates offers the basis for exploring their potential as biological control agents against S. frugiperda, as well the initial studies on their specific infection mechanisms, evolution, and ecology.
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Affiliation(s)
- Ingrid Zanella-Saenz
- División Ciencias de la Vida, Departamento de Alimentos, Posgrado en Biociencias, Universidad de Guanajuato, Campus Irapuato-Salamanca, Km. 9.0 Carr. Irapuato-León, C.P. 36500, Irapuato, Guanajuato, Mexico.,Instituto Tecnológico Superior de Abasolo, Blvd. Cuitzeo de los Naranjos No. 401, Abasolo, C.P. 36976, Guanajuato, Mexico
| | - Elisabeth A Herniou
- Faculté des Sciences Parc Grandmont, Institut de Recherche sur la Biologie de l'Insect, UMR 7261 CNRS-Université de Tours, 37200, Tours, France
| | - Jorge E Ibarra
- Departamento de Biotecnología y Bioquímica, Centro de Investigación y de Estudios Avanzados del I.P.N., 36500, Irapuato, Gto, Mexico
| | - Ilse Alejandra Huerta-Arredondo
- División Ciencias de la Vida, Departamento de Agronomía, Universidad de Guanajuato, Campus Irapuato-Salamanca, Km. 9.0 Carr. Irapuato-León, C.P. 36500, Irapuato, Guanajuato, Mexico
| | - Ma Cristina Del Rincón-Castro
- División Ciencias de la Vida, Departamento de Alimentos, Posgrado en Biociencias, Universidad de Guanajuato, Campus Irapuato-Salamanca, Km. 9.0 Carr. Irapuato-León, C.P. 36500, Irapuato, Guanajuato, Mexico.
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Chen G, Zhao S, Chen N, Wu X. Molecular mechanism responsible for the hyperexpression of baculovirus polyhedrin. Gene 2021; 814:146129. [PMID: 34971751 DOI: 10.1016/j.gene.2021.146129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Revised: 12/06/2021] [Accepted: 12/15/2021] [Indexed: 11/25/2022]
Abstract
One of the amazing phenomena in the baculovirus life cycle is the hyperexpression of the very late gene, polyhedrin (polh), causing the production of the occlusion bodies where progeny virions are embedded. However, to date, the molecular mechanism underlying its hyperexpression is not completely elucidated. Considering that, in this review, the mechanism responsible for its hyperexpression from the previous studies up to now was comprehensively summarized from three aspects, namely, the structure characteristics of the polh promoter and transcription regulation, the structure and translation regulation of the polh mRNA, and especially the regulators that influence the expression of polh gene. Moreover, this review will help us obtain a better understanding about the hyperexpression of polh, and also provide guidance for improving the expression efficiency of the foreign proteins by adopting the baculovirus expression vector system.
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Affiliation(s)
- Guanping Chen
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China; Key Laboratory of Silkworm and Bee Resource Utilization and Innovation of Zhejiang Province, Hangzhou 310058, China
| | - Shudi Zhao
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China; Key Laboratory of Silkworm and Bee Resource Utilization and Innovation of Zhejiang Province, Hangzhou 310058, China
| | - Nan Chen
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China; Key Laboratory of Silkworm and Bee Resource Utilization and Innovation of Zhejiang Province, Hangzhou 310058, China
| | - Xiaofeng Wu
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China; Key Laboratory of Silkworm and Bee Resource Utilization and Innovation of Zhejiang Province, Hangzhou 310058, China.
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Optimization of infection parameters improves Bombyx mori nucleopolyhedrovirus invasion efficiency. Biologia (Bratisl) 2021. [DOI: 10.1007/s11756-021-00931-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Mishra V. A Comprehensive Guide to the Commercial Baculovirus Expression Vector Systems for Recombinant Protein Production. Protein Pept Lett 2020; 27:529-537. [PMID: 31721691 DOI: 10.2174/0929866526666191112152646] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Revised: 10/24/2019] [Accepted: 10/25/2019] [Indexed: 12/17/2022]
Abstract
The Baculovirus Expression Vector System (BEVS) is a workhorse for recombinant protein expression for over thirty-five years. Ever since it was first used to overexpress the human IFN-β protein, the system has been engineered and modified several times for quick and easy expression and scale-up of the recombinant proteins. Multiple gene assemblies performed on the baculovirus genome using synthetic biology methods lead to optimized overexpression of the multiprotein complexes. Nowadays, several commercially available BEVS platforms offer a variety of customizable features, and often it is confusing which one to choose for a novice user. This short review is intended to be a one-stop guide to the commercially available baculovirus technology for heterologous protein expression in the insect cells, which users can refer to choose from popular and desirable BEVS products or services.
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Affiliation(s)
- Vibhor Mishra
- Howard Hughes Medical Institute and Department of Biology, Indiana University, Bloomington, IN 47405, United States
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Wu H, Jin H, Wang L, Huo N, Liu D, Ding H, Cao Y, Liu C, Xi X, Jiao C, Spibey N, Shi J, Liu Y, Tian K. Generation and immunogenicity of virus-like particles based on mink enteritis virus capsid protein VP2 expressed in Sf9 cells. Arch Virol 2020; 165:2065-2071. [PMID: 32613291 DOI: 10.1007/s00705-020-04703-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Accepted: 05/14/2020] [Indexed: 11/25/2022]
Abstract
Mink enteritis virus (MEV) is a parvovirus that causes acute enteritis in mink. The capsid protein VP2 of MEV is a major immunogenicity that is important for disease prevention. In this study, this protein was expressed in Spodoptera frugiperda 9 cells using a recombinant baculovirus system and was observed to self-assemble into virus-like particles (VLPs) with a high hemagglutination (HA) titer (1:216). A single-dose injection of VLPs (HA titer, 1:256) resulted in complete protection of mink against virulent MEV challenge for at least 180 days. These data suggest that these MEV VLPs could be used as a vaccine for the prevention of viral enteritis in mink.
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Affiliation(s)
- Hongchao Wu
- National Research Center for Veterinary Medicine, No. 3 Cuiwei Road, High-Tech District, Luoyang, 471003, Henan, China
| | - Hongli Jin
- Changchun SR Biological Technology Co., LTD, Changchun, 130012, Jilin, China
| | - Lingxiao Wang
- National Research Center for Veterinary Medicine, No. 3 Cuiwei Road, High-Tech District, Luoyang, 471003, Henan, China
| | - Ningning Huo
- National Research Center for Veterinary Medicine, No. 3 Cuiwei Road, High-Tech District, Luoyang, 471003, Henan, China
| | - Di Liu
- Changchun SR Biological Technology Co., LTD, Changchun, 130012, Jilin, China
| | - Hangtian Ding
- National Research Center for Veterinary Medicine, No. 3 Cuiwei Road, High-Tech District, Luoyang, 471003, Henan, China
| | - Yujiao Cao
- National Research Center for Veterinary Medicine, No. 3 Cuiwei Road, High-Tech District, Luoyang, 471003, Henan, China
| | - Caihong Liu
- National Research Center for Veterinary Medicine, No. 3 Cuiwei Road, High-Tech District, Luoyang, 471003, Henan, China
| | - Xiangfeng Xi
- National Research Center for Veterinary Medicine, No. 3 Cuiwei Road, High-Tech District, Luoyang, 471003, Henan, China
| | - Cuicui Jiao
- Changchun SR Biological Technology Co., LTD, Changchun, 130012, Jilin, China
| | - Norman Spibey
- National Research Center for Veterinary Medicine, No. 3 Cuiwei Road, High-Tech District, Luoyang, 471003, Henan, China
| | - Jing Shi
- Changchun SR Biological Technology Co., LTD, Changchun, 130012, Jilin, China
| | - Yuxiu Liu
- National Research Center for Veterinary Medicine, No. 3 Cuiwei Road, High-Tech District, Luoyang, 471003, Henan, China.
| | - Kegong Tian
- National Research Center for Veterinary Medicine, No. 3 Cuiwei Road, High-Tech District, Luoyang, 471003, Henan, China.
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Genome Analysis of a Novel Clade II.b Alphabaculovirus Obtained from Artaxa digramma. Viruses 2019; 11:v11100925. [PMID: 31601038 PMCID: PMC6832367 DOI: 10.3390/v11100925] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2019] [Revised: 09/30/2019] [Accepted: 10/07/2019] [Indexed: 11/25/2022] Open
Abstract
Artaxa digramma is a lepidopteran pest distributed throughout southern China, Myanmar, Indonesia, and India. Artaxa digramma nucleopolyhedrovirus (ArdiNPV) is a specific viral pathogen of A. digramma and deemed as a promising biocontrol agent against the pest. In this study, the complete genome sequence of ArdiNPV was determined by deep sequencing. The genome of ArdiNPV contains a double-stranded DNA (dsDNA) of 161,734 bp in length and 39.1% G+C content. Further, 149 hypothetical open reading frames (ORFs) were predicted to encode proteins >50 amino acids in length, covering 83% of the whole genome. Among these ORFs, 38 were baculovirus core genes, 22 were lepidopteran baculovirus conserved genes, and seven were unique to ArdiNPV, respectively. No typical baculoviral homologous regions (hrs) were identified in the genome. ArdiNPV had five multi-copy genes including baculovirus repeated ORFs (bros), calcium/sodium antiporter B (chaB), DNA binding protein (dbp), inhibitor of apoptosis protein (iap), and p26. Interestingly, phylogenetic analyses showed that ArdiNPV belonged to Clade II.b of Group II Alphabaculoviruses, which all contain a second copy of dbp. The genome of ArdiNPV was the closest to Euproctis pseudoconspersa nucleopolyhedrovirus, with 57.4% whole-genome similarity. Therefore, these results suggest that ArdiNPV is a novel baculovirus belonging to a newly identified cluster of Clade II.b Alphabaculoviruses.
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