1
|
Zhang X, Chen G, Liu R, Guo J, Mei K, Qin L, Li Z, Yuan S, Huang S, Wen F. Identification, pathological, and genomic characterization of novel goose reovirus associated with liver necrosis in geese, China. Poult Sci 2024; 103:103269. [PMID: 38064883 PMCID: PMC10749903 DOI: 10.1016/j.psj.2023.103269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 10/31/2023] [Accepted: 11/10/2023] [Indexed: 12/29/2023] Open
Abstract
Since 2021, a novel strain of goose reovirus (GRV) has emerged within the goose farming industry in Guangdong province, China. This particular viral variant is distinguished by the presence of white necrotic foci primarily localized in the liver and spleen, leading to substantial economic losses for the poultry industry. However, the etiology, prevalence and genomic characteristics of the causative agent have not been thoroughly investigated. In this study, we conducted an epidemiological inquiry employing suspected GRV samples collected from May 2021 to September 2022. The macroscopic pathological and histopathological lesions associated with GRV-infected clinical specimens were examined. Moreover, we successfully isolated the GRV strain and elucidated the complete genome sequence of the isolate GD21/88. Through phylogenetic and recombination analysis, we unveiled that the GRV strains represent a novel variant resulting from multiple reassortment events. Specifically, the μNS, λC, and σNS genes of GRV were found to have originated from chicken reovirus, while the σA gene of GRV exhibited a higher degree of similarity with a novel duck reovirus. The remaining genes of GRV were traced back to Muscovy duck reovirus. Collectively, our findings underscore the significance of GRV as a pathogenic agent impacting the goose farming industry. The insights gleaned from this study contribute to a more comprehensive understanding of the epidemiology of GRV in Southern China and shed light on the genetic reassortment events exhibited by the virus.
Collapse
Affiliation(s)
- Xinyu Zhang
- College of Life Science and Engineering, Foshan University, Foshan 528231, Guangdong, China
| | - Gaojie Chen
- College of Life Science and Engineering, Foshan University, Foshan 528231, Guangdong, China
| | - Runzhi Liu
- College of Life Science and Engineering, Foshan University, Foshan 528231, Guangdong, China
| | - Jinyue Guo
- College of Life Science and Engineering, Foshan University, Foshan 528231, Guangdong, China
| | - Kun Mei
- College of Life Science and Engineering, Foshan University, Foshan 528231, Guangdong, China
| | - Limei Qin
- College of Life Science and Engineering, Foshan University, Foshan 528231, Guangdong, China
| | - Zhili Li
- College of Life Science and Engineering, Foshan University, Foshan 528231, Guangdong, China
| | - Sheng Yuan
- College of Life Science and Engineering, Foshan University, Foshan 528231, Guangdong, China
| | - Shujian Huang
- College of Life Science and Engineering, Foshan University, Foshan 528231, Guangdong, China; Guangdong Huasheng Biotechnology Co., Ltd,Guangzhou 511300, Guangdong, China
| | - Feng Wen
- College of Life Science and Engineering, Foshan University, Foshan 528231, Guangdong, China; Guangdong Provincial Key Laboratory of Animal Molecular Design and Precise Breeding, College of Life Science and Engineering, Foshan University, Foshan 528231, Guangdong, China.
| |
Collapse
|
2
|
Peng Z, Zhang H, Zhang X, Wang H, Liu Z, Qiao H, Lv Y, Bian C. Identification and molecular characterization of novel duck reoviruses in Henan Province, China. Front Vet Sci 2023; 10:1137967. [PMID: 37065255 PMCID: PMC10098080 DOI: 10.3389/fvets.2023.1137967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 03/20/2023] [Indexed: 03/31/2023] Open
Abstract
Novel Duck reovirus (NDRV) is an ongoing non-enveloped virus with ten double-stranded RNA genome segments that belong to the genus Orthoreovirus, in the family Reoviridae. NDRV-associated spleen swelling, and necrosis disease have caused considerable economic losses to the waterfowl industry worldwide. Since 2017, a significant number of NDRV outbreaks have emerged in China. Herein, we described two cases of duck spleen necrosis disease among ducklings on duck farms in Henan province, central China. Other potential causative agent, including Muscovy duck reovirus (MDRV), Duck hepatitis A virus type 1 (DHAV-1), Duck hepatitis A virus type 3 (DHAV-3), Newcastle disease virus (NDV), and Duck tembusu virus (DTMUV), were excluded by reverse transcription-polymerase chain reaction (RT-PCR), and two NDRV strains, HeNXX-1/2021 and HNJZ-2/2021, were isolated. Sequencing and phylogenetic analysis of the σC genes revealed that both newly identified NDRV isolates were closely related to DRV/SDHZ17/Shandong/2017. The results further showed that Chinese NDRVs had formed two distinct clades, with late 2017 as the turning point, suggesting that Chinese NDRVs have been evolving in different directions. This study identified and genetic characteristics of two NDRV strains in Henan province, China, indicating NDRVs have evolved in different directions in China. This study provides an insight into the ongoing emerged duck spleen necrosis disease and enriches our understanding of the genetic diversity and evolution of NDRVs.
Collapse
Affiliation(s)
- Zhifeng Peng
- College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, Zhengzhou, China
| | - Han Zhang
- College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, Zhengzhou, China
| | - Xiaozhan Zhang
- College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, Zhengzhou, China
| | - Haiyan Wang
- College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, Zhengzhou, China
| | - Zihan Liu
- College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, Zhengzhou, China
- College of Animal Science and Veterinary Medicine, Henan Institute of Science and Technology, Xinxiang, China
| | - Hongxing Qiao
- College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, Zhengzhou, China
| | - Yujin Lv
- College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, Zhengzhou, China
| | - Chuanzhou Bian
- College of Veterinary Medicine, Henan University of Animal Husbandry and Economy, Zhengzhou, China
- *Correspondence: Chuanzhou Bian
| |
Collapse
|
3
|
Yun T, Hua J, Ye W, Chen L, Ni Z, Zhu Y, Zhang C. Development and Evaluation of a Monoclonal Antibody-Based Blocking Enzyme-Linked Immunosorbent Assay for the Detection of Antibodies against Novel Duck Reovirus in Waterfowl Species. Microbiol Spectr 2022; 10:e0258122. [PMID: 36445088 PMCID: PMC9769907 DOI: 10.1128/spectrum.02581-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 11/14/2022] [Indexed: 12/03/2022] Open
Abstract
The novel duck reovirus (NDRV) is an emerging pathogen that causes disease in various waterfowl species. Since the outbreak, it has caused huge economic losses to the duck industry in China. A rapid, reliable, and high-throughput method is required for epidemiological investigation and evaluation of vaccine immunogenicity. A good first step would be establishing an enzyme-linked immunosorbent assay (ELISA) that could detect NDRV antibodies in different breeds of ducks and geese from the serum and egg yolk. This study used a recombinant NDRV σB protein and a corresponding horseradish peroxidase (HRP)-labeled monoclonal antibody to develop a blocking ELISA (B-ELISA). The cutoff value of the B-ELISA was 37.01%. A total of 212 serum samples were tested by the B-ELISA, and the virus neutralization test (VNT) was the gold standard test. The sensitivity and specificity of the B-ELISA were 92.17% (106/115) and 97.94% (95/97), respectively. The agreement rates between the B-ELISA and VNT were 94.81% (kappa value, 0.896). The B-ELISA could specifically recognize anti-NDRV sera without cross-reacting with other positive serums for other major diseases in ducks and geese. The inter- and intra-assay coefficients of variation (CVs) of the B-ELISA and VNT assays were acceptable. In conclusion, the novel B-ELISA could be a rapid, simple, safe, and economically attractive alternative to the VNT in assessing duck flocks' immunity status and in epidemiological surveillance in multiple waterfowl species. IMPORTANCE NDRV disease is a new epidemic disease in waterfowl that first appeared in China. Compared with the classical DRV (CDRV), NDRV is associated with more severe symptoms, a higher mortality rate, and a broader host range. NDRV has become the prevalent genotype in China. At present, there are no commercially available diagnostic products for the NDRV disease. VNT, as the gold standard serologic test, is not only time-consuming and laborious, but also has high requirements for facilities and equipment, which is not suitable for clinical application. Conventional ELISA requires specific antispecies conjugates that are not currently available. B-ELISA not only has the advantage of higher analysis specificity, but also can be used to test specific antibodies against different waterfowl species, because no species-specific conjugates are required in such detection. Therefore, it is necessary to establish a B-ELISA for the detection of antibodies against NDRV in waterfowl species.
Collapse
Affiliation(s)
- Tao Yun
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Jionggang Hua
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Weicheng Ye
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Liu Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Zheng Ni
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Yinchu Zhu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| | - Cun Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou, China
| |
Collapse
|
4
|
Huang C, Huang Y, Liu Z, Li J, Han J, Liu Y, Liu J, Chen H, Chen Z. Isolation and characterization of a duck reovirus strain from mature ducks in China. Poult Sci 2022; 102:102345. [PMID: 36571873 PMCID: PMC9800190 DOI: 10.1016/j.psj.2022.102345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 11/10/2022] [Accepted: 11/11/2022] [Indexed: 11/27/2022] Open
Abstract
In 2018, a disease characterized by splenic hemorrhage and necrosis killed ducks in a duck farm in Guangxi province, China. A duck reovirus strain was isolated from the tissues of the dead ducks by inoculating duck embryos and BHK-21 cells. Electron microscopy of the cultured the isolate showed that the viral particles were nearly round in shape and approximately 70 nm in diameter, and they were designated DRV-GL18. Sequence analysis showed that the GL18 strain viral genome was 23,419 nt in length and had 10 dsRNA segments. Phylogenetic analysis of cDNA amplicons of segments encoding the protein σC which are outer capsid proteins showed that the isolate belongs to the branch of the epidemic strains of duck reovirus. The Recombination Detection Program (RDP) and SimPlot program analyses suggested potential genetic recombination events in the M2 segments. Pathogenicity experiments revealed that GL18 produced severe hemorrhaging in livers and necrosis in the spleen of infected SPF ducklings. A death rate of 50% in the experimental ducklings was calculated during the first 7 d, and the rest of the ducklings were observed to undergo spleen necrosis. These data suggested that GL18 is a duck reovirus isolate with severer pathogenicity, and it could be a candidate for development of vaccine. This is the first reported isolation of duck reovirus from mature ducks.
Collapse
|
5
|
Zhang W, Wang M, Yuan S, Li W, Huang J, Sun J, Huang Z, Su L, Yee M, Zhang X, Huang S, El-Ashram S, Li Z. Genetic variation analysis of the sigma B protein gene of novel duck reovirus in southeastern China from 2011 to 2020. J Virol Methods 2022; 303:114479. [DOI: 10.1016/j.jviromet.2022.114479] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/25/2022] [Accepted: 01/25/2022] [Indexed: 11/30/2022]
|
6
|
Yan H, Xu G, Zhu Y, Xie Z, Zhang R, Jiang S. Isolation and characterization of a naturally attenuated novel duck reovirus strain as a live vaccine candidate. Vet Microbiol 2021; 261:109214. [PMID: 34461358 DOI: 10.1016/j.vetmic.2021.109214] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 08/23/2021] [Indexed: 12/25/2022]
Abstract
Novel duck reovirus (NDRV) causes high morbidity in ducklings, and recovered ducklings are often remarkably stunted in growth. In this study, four NDRV strains were isolated from the NDRV outbreaks that occurred in different regions of Shandong province, China. The biological characteristics and pathogenicity of the four NDRV strains were elucidated, and the N20 was identified as a naturally attenuated strain. Three-day-old ducklings were immunized with live N20 strain (100 ELD50/duck), and challenged with 104.52 ELD50 of virulent N19 strain at 7 days post immunization. The vaccinated ducklings showed no evidence of clinical signs, gross and histopathological lesions, or loss of body weight, and 100 % protection against the virulent NDRV N19 infection. The NDRV-specific antibodies were generated in the immunized ducklings and could neutralize different NDRV strains. These results indicated that the N20 strain was a promising live attenuated vaccine candidate against highly pathogenic NDRV infection.
Collapse
Affiliation(s)
- Hui Yan
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, 271018, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian, 271018, China
| | - Guige Xu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, 271018, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian, 271018, China
| | - Yanli Zhu
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, 271018, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian, 271018, China
| | - Zhijing Xie
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, 271018, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian, 271018, China
| | - Ruihua Zhang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, 271018, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian, 271018, China.
| | - Shijin Jiang
- Department of Preventive Veterinary Medicine, College of Veterinary Medicine, Shandong Agricultural University, Taian, 271018, China; Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Taian, 271018, China; Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Taian, 271018, China.
| |
Collapse
|
7
|
Metagenomic characterisation of additional and novel avian viruses from Australian wild ducks. Sci Rep 2020; 10:22284. [PMID: 33335272 PMCID: PMC7747739 DOI: 10.1038/s41598-020-79413-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 12/07/2020] [Indexed: 12/19/2022] Open
Abstract
Birds, notably wild ducks, are reservoirs of pathogenic and zoonotic viruses such as influenza viruses and coronaviruses. In the current study, we used metagenomics to detect and characterise avian DNA and RNA viruses from wild Pacific black ducks, Chestnut teals and Grey teals collected at different time points from a single location. We characterised a likely new species of duck aviadenovirus and a novel duck gyrovirus. We also report what, to the best of our knowledge, is the first finding of an avian orthoreovirus from Pacific black ducks and a rotavirus F from Chestnut teals. Other viruses characterised from the samples from these wild ducks belong to the virus families Astroviridae, Caliciviridae and Coronaviridae. Some of the viruses may have potential cross-species transmissibility, while others indicated a wide genetic diversity of duck viruses within a genus. The study also showed evidence of potential transmission of viruses along the East Asian-Australasian Flyway; potentially facilitated by migrating shorebirds. The detection and characterisation of several avian viruses not previously described, and causing asymptomatic but potentially also symptomatic infections suggest the need for more virus surveillance studies for pathogenic and potential zoonotic viruses in wildlife reservoirs.
Collapse
|
8
|
Zhang S, Li W, Liu X, Li X, Gao B, Diao Y, Tang Y. A TaqMan-based real-time PCR assay for specific detection of novel duck reovirus in China. BMC Vet Res 2020; 16:306. [PMID: 32843030 PMCID: PMC7445919 DOI: 10.1186/s12917-020-02523-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 08/14/2020] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND In China, Newly emerging duck reovirus (NDRV) variants have been causing major disease problems in cherry valley ducks. NDRV has the potential to cause high morbidity and 5-50% mortality rates. Severe hemorrhagic-necrosis in the liver and spleen were commonly seen in NDRV affected ducks. The availability of upgraded methods for rapid diagnosis of newly emerging DRV variants is crucial for successful DRV infection control and prevention. RESULTS In this study, we present a TaqMan-based real-time PCR assay (RT-qPCR) for the detection of NDRV infection. Using the conserved regions within the NDRV genome, we designed the specific primers and probe. The lower limit of detection for NDRV infection was 10 copies/μL (Ct values: 38.3) after the optimization of the RT-qPCR conditions. By cross-checking with other duck viral pathogens, no cross-reactivity was observed confirming the assay was highly specific for the detection of NDRV. Reproducibility of the RT-qPCR was confirmed by intra- and inter-assay variability was less than 2.91%(Intra-assay variability of Ct values: 0.07-1.48%; Interassay variability of Ct values: 0.49-2.91%). This RT-qPCR and conventional PCR (cPCR) detected one hundred and twenty samples of NDRV infection from different regions. The result shows that the positive rates were 94.17 and 84.17% respectively. The detection rate of RT-qPCR rapid detection assay was 10% higher than that of the cPCR method. CONCLUSION This research developed a highly sensitive, specific, reproducible and versatile of RT-qPCR for quantitatively detecting NDRV. It can be used to study the pathogenesis and epidemiology investigation of NDRV.
Collapse
Affiliation(s)
- Shuai Zhang
- College of Animal Science and Technology, Shandong Agricultural University, 61 Daizong Street, Tai'an, 271018, Shandong Province, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, 271018, Shandong, China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an, 271018, Shandong, China
| | - Weihua Li
- College of Animal medical, Qingdao Agricultural University, Qingdao, 266109, Shandong, China
| | - Xiaodong Liu
- Qingdao Yibang Bioengineering Co. Ltd., Qingdao, 266000, Shandong, China
| | - Xudong Li
- College of Animal Science and Technology, Shandong Agricultural University, 61 Daizong Street, Tai'an, 271018, Shandong Province, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, 271018, Shandong, China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an, 271018, Shandong, China
| | - Bin Gao
- College of Animal Science and Technology, Shandong Agricultural University, 61 Daizong Street, Tai'an, 271018, Shandong Province, China.,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, 271018, Shandong, China.,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an, 271018, Shandong, China
| | - Youxiang Diao
- College of Animal Science and Technology, Shandong Agricultural University, 61 Daizong Street, Tai'an, 271018, Shandong Province, China. .,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, 271018, Shandong, China. .,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an, 271018, Shandong, China.
| | - Yi Tang
- College of Animal Science and Technology, Shandong Agricultural University, 61 Daizong Street, Tai'an, 271018, Shandong Province, China. .,Shandong Provincial Key Laboratory of Animal Biotechnology and Disease Control and Prevention, Tai'an, 271018, Shandong, China. .,Shandong Provincial Engineering Technology Research Center of Animal Disease Control and Prevention, Tai'an, 271018, Shandong, China.
| |
Collapse
|
9
|
Liu N, Wang L, Cai G, Zhang D, Lin J. Establishment of a simultaneous detection method for ten duck viruses using MALDI-TOF mass spectrometry. J Virol Methods 2019; 273:113723. [PMID: 31430495 PMCID: PMC7113782 DOI: 10.1016/j.jviromet.2019.113723] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Revised: 08/16/2019] [Accepted: 08/16/2019] [Indexed: 11/17/2022]
Abstract
Rapid screening of infectious viral diseases is the key to ensure healthy development of duck livestock industry. Currently routine viral detection methods are primarily used to detect up to 3 viruses. In this study, matrix-assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF MS) was used for simultaneous detection and genotyping of ten viruses in duck, including Duck hepatitis A virus 1 (DHAV-1), DHAV-3, Duck astrovirus 1 (DAstV-1), DAstV-2, Duck reovirus 1 (DRV-1), DRV-2, Tembusu virus (TMUV), Avian influenza virus (AIV), Goose parvovirus (GPV) and Duck enteritis virus (DEV). The low detection limits of this proposed method for ten duck viruses ranged from 1.3 copies/μl to 7.8 copies/μl. The novel detection method with high sensitivity, good specificity and high throughput has the potential to be applied for disease diagnosis and surveillance.
Collapse
Affiliation(s)
- Ning Liu
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing, China
| | - Lei Wang
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing, China
| | - Gaozhe Cai
- Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, China Agricultural University, Beijing, China
| | - Dabing Zhang
- Key Laboratory of Animal Epidemiology of the Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Jianhan Lin
- Key Laboratory of Agricultural Information Acquisition Technology, Ministry of Agriculture and Rural Affairs, China Agricultural University, Beijing, China; Key Laboratory of Modern Precision Agriculture System Integration Research, Ministry of Education, China Agricultural University, Beijing, China.
| |
Collapse
|
10
|
Yun T, Hua J, Ye W, Yu B, Ni Z, Chen L, Zhang C. Comparative proteomic analysis revealed complex responses to classical/novel duck reovirus infections in the spleen tissue of Cairna moschata. J Proteomics 2018; 193:162-172. [PMID: 30339941 DOI: 10.1016/j.jprot.2018.10.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 10/09/2018] [Accepted: 10/15/2018] [Indexed: 12/16/2022]
Abstract
Duck reovirus (DRV), a member of the genus Orthoreovirus in the family Reoviridae, was first isolated from Muscovy ducks. The disease associated with DRV causes great economic losses to the duck industry. However, the responses of duck (Cairna moschata) to the classical/novel DRV (C/NDRV) infections are largely unknown. To reveal the relationship of pathogenesis and immune response, the proteomes of duck spleen cells under the control and C/NDRV infections were compared. In total, 5986 proteins were identified, of which 5389 proteins were quantified. The different accumulated proteins (DAPs) under the C/NDRV infections showed displayed various biological functions and diverse subcellular localizations. The proteins related to the serine protease system were siginificantly changed, suggesting that the activated serine protease system may play an important role under the C/NDRV infections. Furthermore, the differences in the responses to the C/NRDV infections between the duck liver and spleen tissues were compared. Only a small number of common DAPs were identified in both liver and spleen tissues, suggesting diversified pattern involved in the responses to the C/NRDV infections. However, the changes in the proteins involved in the serine protease systems were similar in both liver and spleen cells. Our data may give a comprehensive resource for investigating the responses to C/NDRV infections in ducks. SIGNIFICANCE: A newly developed MS/MS-based method involving isotopomer labels and 'tandem mass' has been applied to protein accurate quantification in current years. However, no studies on the responses of duck (Cairna moschata) spleen tissue to the classical/novel DRV (C/NDRV) infections have been performed. As a continued study of our previous report on the responses of duck liver tissue to the C/NDRV infections, the current study further compared the differences in the responses to the C/NRDV infections between the duck liver and spleen tissues. Our results will provide an opportunity to reveal the relationship of pathogenesis and immune response and basic information on the pathogenicity of C/NDRV in ducks.
Collapse
Affiliation(s)
- Tao Yun
- Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Jionggang Hua
- Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Weicheng Ye
- Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Bin Yu
- Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Zheng Ni
- Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Liu Chen
- Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Cun Zhang
- Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
| |
Collapse
|
11
|
Yun T, Hua J, Ye W, Yu B, Chen L, Ni Z, Zhang C. Comparative proteomic analysis revealed complex responses to classical/novel duck reovirus infections in Cairna moschata. Sci Rep 2018; 8:10079. [PMID: 29973707 PMCID: PMC6031628 DOI: 10.1038/s41598-018-28499-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Accepted: 06/20/2018] [Indexed: 02/07/2023] Open
Abstract
Duck reovirus (DRV) is an typical aquatic bird pathogen belonging to the Orthoreovirus genus of the Reoviridae family. Reovirus causes huge economic losses to the duck industry. Although DRV has been identified and isolated long ago, the responses of Cairna moschata to classical/novel duck reovirus (CDRV/NDRV) infections are largely unknown. To investigate the relationship of pathogenesis and immune response, proteomes of C. moschata liver cells under the C/NDRV infections were analyzed, respectively. In total, 5571 proteins were identified, among which 5015 proteins were quantified. The differential expressed proteins (DEPs) between the control and infected liver cells displayed diverse biological functions and subcellular localizations. Among the DEPs, most of the metabolism-related proteins were down-regulated, suggesting a decrease in the basal metabolisms under C/NDRV infections. Several important factors in the complement, coagulation and fibrinolytic systems were significantly up-regulated by the C/NDRV infections, indicating that the serine protease-mediated innate immune system might play roles in the responses to the C/NDRV infections. Moreover, a number of molecular chaperones were identified, and no significantly changes in their abundances were observed in the liver cells. Our data may give a comprehensive resource for investigating the regulation mechanism involved in the responses of C. moschata to the C/NDRV infections.
Collapse
Affiliation(s)
- Tao Yun
- Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Jionggang Hua
- Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Weicheng Ye
- Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Bin Yu
- Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Liu Chen
- Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Zheng Ni
- Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China
| | - Cun Zhang
- Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China.
| |
Collapse
|
12
|
Bi Z, Zhu Y, Chen Z, Li C, Wang Y, Wang G, Liu G. Induction of a robust immunity response against novel duck reovirus in ducklings using a subunit vaccine of sigma C protein. Sci Rep 2016; 6:39092. [PMID: 27974824 PMCID: PMC5156932 DOI: 10.1038/srep39092] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 11/16/2016] [Indexed: 12/17/2022] Open
Abstract
Novel duck reovirus (NDRV) disease emerged in China in 2011 and continues to cause high morbidity and about 5.0 to 50% mortality in ducklings. Currently there are no approved vaccines for the virus. This study aimed to assess the efficacy of a new vaccine created from the baculovirus and sigma C gene against NDRV. In this study, a recombinant baculovirus containing the sigma C gene was constructed, and the purified protein was used as a vaccine candidate in ducklings. The efficacy of sigma C vaccine was estimated according to humoral immune responses, cellular immune response and protection against NDRV challenge. The results showed that sigma C was highly expressed in Sf9 cells. Robust humoral and cellular immune responses were induced in all ducklings immunized with the recombinant sigma C protein. Moreover, 100% protection against lethal challenge with NDRV TH11 strain was observed. Summary, the recombinant sigma C protein could be utilized as a good candidate against NDRV infection.
Collapse
Affiliation(s)
- Zhuangli Bi
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China.,College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Yingqi Zhu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China.,College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Zongyan Chen
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Chuanfeng Li
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| | - Yong Wang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Guijun Wang
- College of Animal Science and Technology, Anhui Agricultural University, Hefei 230036, China
| | - Guangqing Liu
- Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China
| |
Collapse
|
13
|
Li N, Hong T, Wang Y, Wang Y, Yu K, Cai Y, Liu S, Wei L, Chai T. The pathogenicity of novel duck reovirus in Cherry Valley ducks. Vet Microbiol 2016; 192:181-185. [PMID: 27527781 DOI: 10.1016/j.vetmic.2016.07.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 07/14/2016] [Accepted: 07/22/2016] [Indexed: 12/30/2022]
Abstract
The novel duck reovirus (NDRV) is an emerging, contagious infection. To better realize the pathogenic mechanism of NDRV in ducks, an infection experiment was conducted. The resulting data demonstrated that typical gross lesions were observed in the infected ducks. NDRV was able to replicate in various tissues, leading to these pathological lesions, especially on the liver and spleen. Real-time quantitative PCR showed that the expression of most innate immune-related genes was up-regulated and the antiviral innate immune response could be established in both the liver and spleen. This study indicates that NDRV is a pantropic virus. To resist viral infection, several pathogen recognition receptors can cooperatively recognize NDRV and initiate innate immunity, but the responses are different between different tissues. As far as we know, this is the first systematic investigation of the pathogenicity of NDRV in Cherry Valley ducks based on the host's innate immunity, and these data will provide new insights into the further study of the disease.
Collapse
Affiliation(s)
- Ning Li
- College of Veterinary Medicine, Shandong Agricultural University, Sino-German Cooperative Research Centre for Zoonosis of Animal Origin Shandong Province, 61 Daizong Road, Tai'an 271000, Shandong Province, China; Collaborative Innovation Centre for the Origin and Control of Emerging Infectious Diseases of Taishan Medical College, Tai'an 271000, Shandong Province, China
| | - Tianqi Hong
- College of Veterinary Medicine, Shandong Agricultural University, Sino-German Cooperative Research Centre for Zoonosis of Animal Origin Shandong Province, 61 Daizong Road, Tai'an 271000, Shandong Province, China
| | - Yao Wang
- College of Veterinary Medicine, Shandong Agricultural University, Sino-German Cooperative Research Centre for Zoonosis of Animal Origin Shandong Province, 61 Daizong Road, Tai'an 271000, Shandong Province, China
| | - Youling Wang
- Institute of Poultry Science, Shandong Academy of Agricultural Sciences, Jinan 250000, Shandong Province, China
| | - Kexiang Yu
- Institute of Poultry Science, Shandong Academy of Agricultural Sciences, Jinan 250000, Shandong Province, China
| | - Yumei Cai
- College of Veterinary Medicine, Shandong Agricultural University, Sino-German Cooperative Research Centre for Zoonosis of Animal Origin Shandong Province, 61 Daizong Road, Tai'an 271000, Shandong Province, China
| | - Sidang Liu
- College of Veterinary Medicine, Shandong Agricultural University, Sino-German Cooperative Research Centre for Zoonosis of Animal Origin Shandong Province, 61 Daizong Road, Tai'an 271000, Shandong Province, China
| | - Liangmeng Wei
- College of Veterinary Medicine, Shandong Agricultural University, Sino-German Cooperative Research Centre for Zoonosis of Animal Origin Shandong Province, 61 Daizong Road, Tai'an 271000, Shandong Province, China; Collaborative Innovation Centre for the Origin and Control of Emerging Infectious Diseases of Taishan Medical College, Tai'an 271000, Shandong Province, China.
| | - Tongjie Chai
- College of Veterinary Medicine, Shandong Agricultural University, Sino-German Cooperative Research Centre for Zoonosis of Animal Origin Shandong Province, 61 Daizong Road, Tai'an 271000, Shandong Province, China; Collaborative Innovation Centre for the Origin and Control of Emerging Infectious Diseases of Taishan Medical College, Tai'an 271000, Shandong Province, China.
| |
Collapse
|
14
|
A duck reovirus variant with a unique deletion in the sigma C gene exhibiting high pathogenicity in Pekin ducklings. Virus Res 2016; 215:37-41. [DOI: 10.1016/j.virusres.2016.01.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2015] [Revised: 01/26/2016] [Accepted: 01/26/2016] [Indexed: 11/19/2022]
|
15
|
Yun T, Chen H, Yu B, Zhang C, Chen L, Ni Z, Hua J, Ye W. Development and application of an indirect ELISA for the detection of antibodies to novel duck reovirus. J Virol Methods 2015; 220:55-9. [PMID: 25907470 DOI: 10.1016/j.jviromet.2015.04.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Revised: 04/07/2015] [Accepted: 04/10/2015] [Indexed: 11/19/2022]
Abstract
A novel duck reovirus (N-DRV) disease emerged in China in 2000 and it has become an epidemic genotype. A test for detection of virus-specific antibodies in serum samples would be useful for epidemiological investigations. Currently, Currently, serological assays for N-DRV diagnosis are not available. A test for detection of virus-specific antibodies in serum samples would be useful for epidemiological investigations. In this study, a highly sensitive and specific indirect enzyme-linked immunosorbent assay (ELISA) for the detection of antibodies to N-DRV was developed. The outer capsid (σC) of N-DRV was cloned and expressed in Escherichia coli as a coating antigen. The antigen concentration and serum dilution were optimized using a checkerboard titration. Furthermore, the specificity of σC-ELISA assay was confirmed by cross checking with other duck viral pathogens. In comparison with the western blot, the sensitivity and specificity of the σC-ELISA was 92.6% and 88.9%, respectively, and agreement of two tests was excellent with κ value of 0.786 (p < 0.05). A serological survey was performed using the assay on serum samples from different age and species of duck flocks in the Zhejiang and Jiangsu Province, China. The seropositive rate of the 1209 serum samples was 57.7%. In conclusion, the developed σC-ELISA assay is a very specific and sensitive test that will be useful for large-scale serological survey in N-DRV infection and monitoring antibodies titers against N-DRV.
Collapse
Affiliation(s)
- Tao Yun
- Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Haipeng Chen
- College of Animal Science and Veterinary Medicine, Shandong Agricultural University, Tai'an 271018, China
| | - Bin Yu
- Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Cun Zhang
- Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China.
| | - Liu Chen
- Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Zheng Ni
- Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Jionggang Hua
- Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Weicheng Ye
- Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| |
Collapse
|
16
|
Detection of shared genes among Asian and European waterfowl reoviruses in the whole genome constellations. INFECTION GENETICS AND EVOLUTION 2014; 28:55-7. [DOI: 10.1016/j.meegid.2014.08.029] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 08/18/2014] [Accepted: 08/29/2014] [Indexed: 11/23/2022]
|
17
|
Molecular characterization of a novel reovirus isolated from Pekin ducklings in China. Arch Virol 2014; 160:365-9. [PMID: 25287130 DOI: 10.1007/s00705-014-2241-x] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Accepted: 09/22/2014] [Indexed: 10/24/2022]
Abstract
The complete genome sequence of a novel duck orthoreovirus, designated DRV strain TH11(DRV-TH11), was determined and characterized. The DRV-TH11 genome is comprised of 23,417 bp and its genome organization is more similar to that of avian orthoreoviruses (ARVs) of chicken origin than other reoviruses. The results of comparative sequence analysis and dendrograms based on the µB- and σC-encoding genes indicated that TH11 may be derived from the reassortment of ARVs and classic Muscovy duck reovirus (MDRV). A possible recombinant event was identified using the SimPlot program, and it occurred in the M2 segment. The results indicated that reassortment and mutation play a role in the evolution of duck reovirus.
Collapse
|
18
|
Complete genome sequence of an avian reovirus isolated from wild mallard ducks in china. GENOME ANNOUNCEMENTS 2014; 2:2/5/e00813-14. [PMID: 25237015 PMCID: PMC4172264 DOI: 10.1128/genomea.00813-14] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
We report here the complete sequence of novel duck reovirus (N-DRV) strain SD12 isolated from diseased wild mallard ducklings in the Shandong Province of China in 2012. The complete genome consists of 23,420 nucleotide base pairs (bp), including 10 segments ranging from 1,191 bp (S4) to 3,959 bp (L1).
Collapse
|
19
|
The complete genome sequence of a European goose reovirus strain. Arch Virol 2014; 159:2165-9. [DOI: 10.1007/s00705-014-2003-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Accepted: 01/21/2014] [Indexed: 11/26/2022]
|
20
|
Yun T, Yu B, Ni Z, Ye W, Chen L, Hua J, Zhang C. Genomic characteristics of a novel reovirus from Muscovy duckling in China. Vet Microbiol 2014; 168:261-71. [DOI: 10.1016/j.vetmic.2013.11.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2013] [Revised: 10/23/2013] [Accepted: 11/04/2013] [Indexed: 10/26/2022]
|
21
|
Yun T, Yu B, Ni Z, Ye W, Chen L, Hua J, Zhang C. Isolation and genomic characterization of a classical Muscovy duck reovirus isolated in Zhejiang, China. INFECTION GENETICS AND EVOLUTION 2013; 20:444-53. [PMID: 24140560 DOI: 10.1016/j.meegid.2013.10.004] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Revised: 09/23/2013] [Accepted: 10/06/2013] [Indexed: 11/16/2022]
Abstract
A classical Muscovy reovirus was isolated from a sick Muscovy duck with white necrotic foci in its liver in Zhejiang, China, in 2000. This classical reovirus was propagated in a chicken fibroblast cell line (DF-1) with obvious cytopathic effects. Its genome was 22,967 bp in length, with approximately 51.41% G+C content and 10 dsRNA segments encoding 11 proteins, which formed a 3/3/4 electrophoretic PAGE profile pattern. The length of the genomic segments was similar to those of avian orthoreoviruses (ARV and N-MDRV), ranging from 3959 nt (L1) to 1191nt (S4). All of the segments have the conserved terminal sequences 5'-GCUUUU--UUCAUC-3', and with the exception of the S4 segment, all the genome segments apparently encode one single primary translation product. The genome analysis revealed that the S4 segment of classical MDRV is a bicistronic gene, encoding the overlapping ORFs for p10 and σC but distinct from ARV and N-MDRV/N-GRV, which codes for p10, p18 and σC via the tricistronic S1 segment. A comparative sequence analysis provided evidence indicating extensive sequence divergence between classical MDRV and other avian orthoreoviruses. A phylogenetic analysis based on the RNA-dependent RNA polymerase (RdRp) and the major outer capsid proteins σC was performed. Members of the DRVs in the Avian orthoreovirus species were clustered into two genetic groups (classical MDRV and N-MDRV genotype), and the classical MDRV isolates formed distinct lineages (China and Europe lineages), suggesting that the classical MDRVs isolated in restricted geographical region are evolving by different and independent pathways.
Collapse
Affiliation(s)
- Tao Yun
- Institute of Animal Husbandry and Veterinary Sciences, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | | | | | | | | | | | | |
Collapse
|
22
|
Wang D, Shi J, Yuan Y, Zheng L, Zhang D. Complete sequence of a reovirus associated with necrotic focus formation in the liver and spleen of Muscovy ducklings. Vet Microbiol 2013; 166:109-22. [PMID: 23820048 DOI: 10.1016/j.vetmic.2013.05.022] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Revised: 05/14/2013] [Accepted: 05/22/2013] [Indexed: 10/26/2022]
Abstract
The complete sequence of a reovirus, strain 815-12 associated with necrotic focus formation in the liver and spleen of Muscovy ducklings in China, was determined and compared with sequences of other duck-, goose-, and chicken-origin reoviruses. The 815-12 genome comprised 22,969 bp with 10 dsRNA segments ranging from 1125 bp (S4) to 3958 bp (L1), all of which (except S4) were almost identical in length to the cognate segments of other waterfowl and chicken isolates. Detailed analyses revealed that 815-12 and other waterfowl isolates contained the conserved 3'-terminal pentanucleotide sequence (UCAUC-3') of the orthoreoviruses and 5'-terminal hexanucleotide sequence (5'-GCUUUU) of avian orthoreoviruses (ARVs), and conserved functional motifs previously identified in ARV proteins. Several notable differences, including organization of the polycistronic genome segments and genomic coding assignments of the S segments, existed between viruses represented by 815-12 and the waterfowl reoviruses emerging in China in recent years; the latter was somewhat similar to chicken isolates. Pairwise sequence comparisons demonstrated extensive sequence diversity among the various waterfowl isolates and between waterfowl and chicken isolates. Phylogenetic analyses identified two genetic groups for waterfowl reoviruses, and potential genetic reassortment of segment M2 between waterfowl and chicken reoviruses and segments encoding for λA, λB, μA, μNS and σA between waterfowl reoviruses. Taken together, it was suggested that common designation ARV-Wa should be used to represent ARV isolates from different waterfowl species and that the two ARV-Wa genotypes should be considered as two separate groups distinct from chicken isolates within the species Avian orthoreovirus.
Collapse
Affiliation(s)
- Dan Wang
- Key Laboratory of Animal Epidemiology and Zoonosis of Ministry of Agriculture, College of Veterinary Medicine, China Agricultural University, No. 2 YuanMingYuan west road, 100193 Beijing, People's Republic of China
| | | | | | | | | |
Collapse
|