ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2017, Vol. 48 ›› Issue (8): 1491-1498.doi: 10.11843/j.issn.0366-6964.2017.08.013

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Duplex Real-time PCR Method for Detection of Mycoplasma hyopneumoniae and Mycoplasma hyorhinis

WU Yu-zi1,2, XIONG Qi-yan1, LIU Bei-bei1, ZHANG Zhen-zhen1, WANG Jia1, HUA Li-zhong1, WEI Yan-na1, SHAO Guo-qing1*   

  1. 1. Key Laboratory of Veterinary Biological Engineering and Technology of Ministry of Agriculture, National Center for Engineering Research of Veterinary Bio-products, Institute of Veterinary Medicine, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China;
    2. Key Lab of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Nanjing 210014, China
  • Received:2017-03-30 Online:2017-08-23 Published:2017-08-23

Abstract:

The study was conducted to develop a TaqMan probe-based, sensitive, specific duplex real-time PCR for detection of Mycoplasma hyopneumoniae and Mycoplasma hyorhinis. The specific primers and probes, labeled with FAM and Texas Red respectively, were designed to amplify the P97 gene of Mycoplasma hyopneumoniae and P37 gene of Mycoplasma hyorhinis. The reaction system of duplex real-time PCR was established and optimized,and its sensitivity, specificity and repeatability were analyzed. The sensitivity of duplex real-time PCR established was 10 copies·μL-1 for Mycoplasma hyopneumoniae and Mycoplasma hyorhinis. There was no cross reaction with other common viral and bacterial pathogens. The concentration of standard coefficient of variation of Ct values was less than 5%, indicating good reproducibility. Moreover, 72 clinical samples were detected by the duplex real-time PCR assay. The results showed that the positive rates of Mycoplasma hyopneumoniae were 80%, 22% and 58.33% in lung tissues, nasal swabs and bronchoalveolar lavage fluids samples, respectively; the positive rates of Mycoplasma hyorhinis were 40%, 66% and 41.67% in lung tissues, nasal swabs and bronchoalveolar lavage fluids samples, respectively. The duplex real-time PCR for detecting Mycoplasma hyopneumoniae and Mycoplasma hyorhinis simultaneously was more sensitive than the common PCR, and can be used for detecting clinical samples. The advantage of this method is that it can acquire various information of samples in a short time, and save the time and economic consumption of multiple tests, and it provides a new and reliable detection technology for detection and control of Mycoplasma hyopneumoniae and Mycoplasma hyorhinis.

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