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Acta Horticulturae Sinica ›› 2021, Vol. 48 ›› Issue (1): 183-192.doi: 10.16420/j.issn.0513-353x.2020-0174

• New Technology and New Mathod • Previous Articles     Next Articles

Establishment of Recombinase Polymerase Amplification Combined with Lateral Flow Dipstick for Detection of Prune Dwarf Virus

CHEN Ling, YAN Guohua, ZHANG Xiaoming, ZHOU Yu, WANG Jing, DUAN Xuwei, LI Yanlin, ZHANG Kaichun*()   

  1. Beijing Engineering Research Center for Deciduous Fruit Trees,Beijing 100093,China
  • Received:2020-05-15 Revised:2020-08-12 Online:2021-01-25 Published:2021-01-29
  • Contact: ZHANG Kaichun E-mail:kaichunzhang@126.com

Abstract:

Recombinase polymerase amplification combined with lateral flow dipstick(RPA-LFD)method was developed to detect prune dwarf virus(PDV)in cherry,using the specific primers and probe based on the conserved coat protein gene sequences of PDV. The RPA method could be conducted under isothermal conditions optimized to be 39 ℃ for 20 min,and the terminally labeled amplicon can reach the detection level. The detection results could be visually inspected with lateral flow dipstick located in amplicon detection champer within 20 min. The established method was specific and no cross-reactivity was detected with other six cherry-infecting viruses(CGRMV,PNRSV,LchV-1,PBNSPaV,CVA and CNRMV). The sensitivity test showed that the RPA was about 10-fold sensitive than that of PCR. This method was verified effectively by testing 13 field-collected samples,and the results were consistent with those detected by PCR method. The RPA-LFD detection technique developed in this study is a simple,rapid,sensitive and specific method,which could be applicable for rapid and accurate detection and identification of PDV.

Key words: prune dwarf virus, cherry, recombinase polymerase amplification combined with lateral flow dipstick(RPA-LFD), detection

CLC Number: