Journal of Integrative Agriculture ›› 2017, Vol. 16 ›› Issue (04): 884-891.DOI: 10.1016/S2095-3119(16)61475-2

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  • 收稿日期:2016-05-24 出版日期:2017-04-04 发布日期:2017-04-07

Monoclonal antibody-based serological detection of Citrus yellow vein clearing virus in citrus groves

LIU Zhen, SUNZHU Yuan-ji, ZHOU Xue-ping, HONG Jian, WU Jian-xiang   

  1. State Key Laboratory of Rice Biology, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, P.R.China
  • Received:2016-05-24 Online:2017-04-04 Published:2017-04-07
  • Contact: WU Jian-xiang, Tel: +86-571-88982250, Fax: +86-571-86971498, E-mail: wujx@zju.edu.cn; HONG Jian, E-mail: jhong@zju.edu.cn
  • About author:LIU Zhen, E-mail: 21316175@zju.edu.cn
  • Supported by:

    We are grateful to Dr. Ding Xinshun (Samuel Roberts Noble Foundation, Ardmore, USA) for his valuable comments and manuscript edits.  This work was supported by the Special Fund for Agro-scientific Research in the Public Interest, China (201203076-05) and the National Basic Research Program of China (2014CB138400).

Abstract: Citrus yellow vein clearing virus (CYVCV) is considered as the causal agent of Citrus yellow vein clearing disease and belongs to the genus Mandarivirus in the family Alphaflexiviridae.  Capsid protein (CP) of CYVCV Chongqing isolate (CYVCV-CQ) was produced using a prokaryotic expression system and used as the immunogen for monoclonal antibody (MAb) production.  Four highly specific and sensitive murine MAbs and one polyclonal antibody were prepared in this study.  Titers of the four MAbs in ascites fluids ranged from 10–6 to 10–7 as determined by indirect enzyme-linked immunosorbent assay (ELISA).  Three serological assays, including dot enzyme-linked immunosorbent assay (dot-ELISA), tissue blot-ELISA, and double-antibody sandwich (DAS)-ELISA, were developed for quick and reliable detections of CYVCV in citrus samples.  The developed dot-ELISA and DAS-ELISA methods could detect CYVCV in the infected citrus leaf crude extracts diluted at 1:2 560 and 1:10 240 (w/v, g mL–1), respectively.  The detection result of 125 citrus leaf samples collected from citrus groves in Yunnan Province and Chongqing Municipality of China showed that approximately 36% samples were positive for CYVCV.  This virus was, however, not detected in any sample collected from Zhejiang or Jiangxi Province, China.

Key words: Citrus yellow vein clearing virus, monoclonal antibody, serological assay