ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2014, Vol. 45 ›› Issue (11): 1824-1829.doi: 10.11843/j.issn.0366-6964.2014.11.012

Previous Articles     Next Articles

A Real-time Quantitative Reverse Transcription-PCR for the Detection of Schmallenberg Virus Nucleic Acid

ZHANG Yong-ning,WU Shao-qiang,LYU Ji-zhou,FENG Chun-yan,WANG Cai-xia,DENG Jun-hua,YUAN Xiang-fen,LIN Xiang-mei*   

  1. (Institute of Animal Quarantine,Chinese Academy of Inspection and Quarantine,Beijing 100029,China)
  • Received:2014-05-05 Online:2014-11-23 Published:2014-11-23

Abstract:

In the present study,a pair of primers and a TaqMan probe were designed based on the S-segment sequence of Schmallenberg virus (SBV),and a real-time quantitative reverse transcription-PCR (RT-qPCR) for the detection of SBV nucleic acid was established.After optimization of the reaction system and condition,the method presented a good linear relationship with the RNA template ranging from 101 to 107 50% tissue culture infectious dose (TCID50) SBV.By using SBV nucleic acid-positive samples (n=140),SBV nucleic acid-negative samples (n=132),and RNA samples (n=16) of related viruses within the Simbu serogroup,the sensitivity,specificity and reproducibility of the RT-qPCR were validated.All the samples used for validation were prepared and preserved by the Friedrich-Loeffler-Institut (FLI) of Germany.The results demonstrated that the developed RT-qPCR had a similar sensitivity with that of FLI and the concordance rate between the two assays was 96.4% (135/140),that the RT-qPCR could sensitively detect 1 TCID50 SBV RNA and it had a good reproducibility,and that the RT-qPCR showed no cross-reactivity with related viruses within the Simbu serogroup except for Douglas virus.The RT-qPCR was further used to detect the RNA samples extracted from sheep sera which were collected from a breeding farm located in Inner Mongolia (n=47) and from the sheep imported from Australia (n=47),respectively.However,no SBV nucleic acid-positive sample was detected.The successful development of SBV RT-qPCR provides us with an efficient detection tool for dealing with Schmallenberg disease.

CLC Number: