Establishment of a quantitative real-time PCR for detecting vvhA gene in Vibrio vulnificus
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(1. Animal Quarantine Lab, Inspection & Quarantine Technology Center of Hainan Entry-Exit Inspection & Quarantine Bureau, Haikou, Hainan 570311, China; 2. College of Veterinary Medicine, Northeast Agricultural University, Harbin, Heilongjinag 150001, China; 3. Conghua Entry-Exit Inspection & Quarantine Bureau, Conghua, Guangdong 510900, China; 4. Animal Quarantine Lab, Inspection & Quarantine Technology Center of Chongqing Entry-Exit Inspection & Quarantine Bureau, Chongqing 404100, China; 5. Laboratory of Bovine Genetics and Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100193, China; 6. Department of Animal Husbandry & Veterinary Medicine, Liaoning Medical University, Jinzhou, Liaoning 121001, China)

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    Abstract:

    To establish a rapid assay for Vibrio vulnificus (V. vulnificus) detection, a quantitative real-time PCR (qRT-PCR) method was developed targeting vvhA gene of V. vulnificus . The results showed that the tests for 15 strains of different bacteria by using this method, only the ones of V. vulnificus were positive, indicating high specificity of qRT-PCR. Moreover, the sensitivity of this specific method was 15 CFU/mL. Further stability and reproducibility test results showed that the coefficient of variation of Ct values of four duplicates were less than 2%. In addition, a total 2 positive samples for V. vulnificus were detected from 156 clinical samples by this method, and the results were in accordance with those by SN/T 1870-2007 standard detections. Therefore, the qRT-PCR method provides a novel rapid and sensitive detection method for V. vulnificus infection.

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李丹丹,徐义刚,邱索平,等.基于vvhA基因检测创伤弧菌实时荧光PCR方法的建立[J].食品与机械英文版,2016,32(9):31-33,70.

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  • Received:January 06,2016
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  • Online: March 09,2023
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