A duplex real-time PCR assay for the detection and quantification of avian reovirus and Mycoplasma synoviae

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• 作者：Li Huang ; Zhixun Xie ; Liji Xie ; Xianwen Deng ; Zhiqin Xie ; Sisi Luo…
• 关键词：Duplex real ; time PCR assay ; Avian reovirus ; Mycoplasma synoviae
• 刊名：Virology Journal
• 出版年：2015
• 出版时间：December 2015
• 年：2015
• 卷：12
• 期：1
• 全文大小：1,492 KB
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  19. Vaitomaa
• 作者单位：Li Huang (1) (2)
  Zhixun Xie (1)
  Liji Xie (1)
  Xianwen Deng (1)
  Zhiqin Xie (1)
  Sisi Luo (1)
  Jiaoling Huang (1)
  Tingting Zeng (1)
  Jiaxun Feng (2)
  
  1. Guangxi Key Laboratory of Animal Vaccines and New Technology, Guangxi Veterinary Research Institute, Nanning, 530001, PR China
  2. College of Life Science and Technology, Guangxi University, Nanning, 530004, PR China
  
• 刊物主题：Virology;
• 出版者：BioMed Central
• ISSN：1743-422X

文摘

Background Infectious arthritis in broilers represents an economic and health problem, resulting in severe losses due to retarded growth and downgrading at the slaughterhouse. The most common agents associated with cases of infectious arthritis in poultry are avian reovirus (ARV) and Mycoplasma synoviae (MS). The accurate differentiation and rapid diagnosis of ARV and MS are essential prerequisites for the effective control and prevention of these avian pathogens in poultry flocks. This study thus aimed to develop and validate a duplex real-time PCR assay for the simultaneous detection and quantification of ARV and MS. Methods Specific primers and probes for each pathogen were designed to target the special sequence of the ARV σC gene or the MS phase-variable surface lipoprotein hemagglutinin (vlhA) gene. A duplex real-time PCR assay was developed, and the reaction conditions were optimized for the rapid detection and quantification of ARV and MS. Results The duplex real-time PCR assay was capable of ARV- and MS-specific detection without cross-reaction with other non-targeted avian pathogens. The sensitivity of this assay was 2 × 101 copies for a recombinant plasmid containing ARV σC or MS vlhA gene, and 100 times higher than that of conventional PCR. This newly developed PCR assay was also reproducible and stable. All tested field samples of ARV and/or MS were detectable with this duplex real-time PCR assay compared with pathogen isolation and identification as well as serological tests. Conclusion This duplex real-time PCR assay is highly specific, sensitive and reproducible and thus could provide a rapid, specific and sensitive diagnostic tool for the simultaneous detection of ARV and MS in poultry flocks. The assay will be useful not only for clinical diagnostics and disease surveillance but also for the efficient control and prevention of ARV and MS infections.