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Acta Horticulturae Sinica ›› 2021, Vol. 48 ›› Issue (3): 590-599.doi: 10.16420/j.issn.0513-353x.2020-0545

• New Technology and New Mathod • Previous Articles     Next Articles

The Rapid Detection of Xanthomonas citri ssp. citriXcc)Based on Recombinase Polymerase Amplification(RPA)Assay

MA Zhimin, DUAN Yu, XU Jianjian, BIN Yu, ZHOU Changyong(), SONG Zhen()   

  1. Citrus Research Institute,Southwest University/Chinese Academy of Agricultural Sciences,Chongqing 400712,China
  • Received:2020-12-16 Online:2021-03-25 Published:2021-04-02
  • Contact: ZHOU Changyong,SONG Zhen E-mail:zhoucy@cric.cn;songzhen@cric.cn

Abstract:

A detection assay based on recombinase polymerase amplification(RPA)for Xanthomonas citri ssp.citriXcc)was established by designing specific primers and optimizing concentration of primers,reaction temperature and reaction time. The method requires no complex equipment such as PCR apparatus,and can complete the detection process at 39 ℃ in 30 min,which is quick and simple. The detection method has strong specificity to Xcc with no cross reaction with other citrus pathogens. The RPA detection sensitivity was 100 times higher than that of ordinary PCR,which was the same as that of real-time quantitative PCR. In 71 citrus samples,22 samples were positive to canker detected by RPA,which was consistent with the results of PCR and real-time quantitative PCR.

Key words: citrus bacterial canker disease, recombinase polymerase amplification, detection

CLC Number: