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A Multiplex PCR Method for Simultaneous Detection of Infectious Laryngotracheitis Virus and Ornithobacterium rhinotracheale .

Van-Giap NguyenThi-Bich-Phuong CaoVan-Truong LeHa-Thai TruongThi-Thanh-Huong ChuHuu-Anh DangThi-Hoa NguyenThi-Luyen LeThi-My-Le Huynh
Published in: Veterinary sciences (2023)
To date, many fluorescence- and gel-based multiplex polymerase chain reaction (PCR) assays have been developed for the simultaneous detection of multiple infectious agents of respiratory disease in poultry. However, PCR assays are not available for other important emerging respiratory bacteria, such as Ornithobacterium rhinotracheale (ORT). We aimed to fill this gap by establishing a new duplex PCR method for the simultaneous detection of infectious laryngotracheitis virus (ILTV) and ORT. Multiplex primer design software was used to select the compatible multiplex primer pairs. It was determined that an annealing temperature of 65 °C and an initial concentration of 2.5 pmol/µL for each primer set were the most suitable conditions for multiplex PCR. The assay was confirmed to be specific, as it only detected the target pathogens, even in the presence of six non-target agents. The limit of detection was up to 10 3 copies/µL of template DNA for both ILTV and ORT. In the screening of 304 field samples, 23, 88, and 44 were positive for both ILTV and ORT, solely for ILTV, and solely ORT, respectively.
Keyphrases
  • real time pcr
  • high throughput
  • single molecule
  • circulating tumor
  • tandem mass spectrometry
  • energy transfer
  • liquid chromatography
  • hyaluronic acid