Acta Agriculturae Zhejiangensis ›› 2024, Vol. 36 ›› Issue (8): 1811-1819.DOI: 10.3969/j.issn.1004-1524.20230922

• Animal Science • Previous Articles     Next Articles

Establishment of a visual recombinase polymerase amplification assays for Mycoplasma bovis

WANG Jianlin1(), TIAN Xingmiao1, WANG Jingsong1,2, DAI Shasha1, GUO Yanan2, HE Shenghu1, LI Jidong1,*()   

  1. 1. College of Animal Science and Technology, Ningxia University, Yinchuan 750021, China
    2. Institute of Animal Science, Ningxia Academy of Agriculture and Forestry Sciences, Yinchuan 750002, China
  • Received:2023-07-28 Online:2024-08-25 Published:2024-09-06
  • Contact: LI Jidong

Abstract:

The aim was to establish an efficient and rapid visual recombinase polymerase amplification (LFD-RPA) clinical diagnostic method for Mycoplasma bovis. With the uvrc gene sequence of Mycoplasma bovis as the target gene, specific primers and probes are designed and validated by sensitivity, specificity, repeatability and clinical sample detection test through screening of primers and probes and optimizing the reaction conditions. The results showed that the optimal primers for LFD-RPA of Mycoplasma bovis established in this test were F2/R2, and the optimal reaction condition was 39 ℃ for 25 min; the detection sensitivity was up to 2.08 copies·μL-1, 100 times of common PCR; there was no cross reaction with Mycoplasma synoviae, Salmonella, Mycoplasma ovipneumoniae, Pasteurella multocida, Staphylococcus aureus, Streptococcus agalactiae and Clostridium perfringens; the repeatability was stable; 50 nasal swab samples were detected, the positive rate was 26%, and the coincidence rate with domestic industry standard PCR detection methods was 89.6%. In this study, the LFD-RPA detection method for Mycoplasma bovis was successfully established, which has the advantages of easy operation, rapidity, high efficiency, and sensitivity, and provides technical support for the rapid clinical diagnosis of Mycoplasma bovis.

Key words: Mycoplasma bovis, recombinase polymerase amplification assays, visualization, test method

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