ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2014, Vol. 45 ›› Issue (2): 268-273.doi: 10.11843/j.issn.0366-6964.2014.02.015

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Development of a Multiplex PCR for Rapid Identification of Salmonella enteritidisSalmonella typhimuriumSalmonella pullorum and Salmonella gallinarum

YANG Lin1,LOU Ya-kun1,SU Chun-hu1,ZHANG Hua1,GUAN Meng1,XU Chen-xu1,CHEN Su-juan1,WEI Rong2,CHEN Ji-ming2,PENG Da-xin1*   

  1. (1.College of Veterinary Medicine,Yangzhou University, Yangzhou 225009, China;2.China Animal Health and Epidemiology Center, Qingdao 266032, China)
  • Received:2013-06-20 Online:2014-02-23 Published:2014-02-23

Abstract:

Based on the sequences of the hut gene specific for Salmonella and the SdfⅠ, SpyglgC,and Spec genes specific for Salmonella serotypes,five pairs of primers were designed and synthesized.A multiplex PCR (mPCR) method was developed and uses for detection of clinical Salmonella isolates.The results showed that the strains of S.enteritidisS.typhimuriumS.pullorum and S.gallinarum were identified specifically by the mPCR,the sensitivities of mPCR for all bacteria were 3×103 CFU,and the sensitivities of mPCR for chromosomal DNA of S.enteritidisS.typhimuriumS.pullorum and S.gallinarum were 162,202,214 and 178 pg·μL-1,respectively.Compared to the traditional serological assay,the sensitivities of the PCR for 55 Salmonella clinical isolates were 100%,and the minimal coincidence rate of the mPCR assay were 96.4%.The results indicated that the mPCR assay is a rapid,sensitive and specific method for identification of the four serotypes Salmonella.

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