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茶叶科学 ›› 2008, Vol. 28 ›› Issue (4): 260-266.doi: 10.13305/j.cnki.jts.2008.04.005

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茶毛虫核型多角体病毒ph基因抗体的制备与利用

王礼中1,2, 肖强1,*, 张传溪2   

  1. 1. 中国农业科学院茶叶研究所,浙江 杭州310008;
    2. 浙江大学应用昆虫研究所,浙江 杭州 310029
  • 收稿日期:2008-04-01 出版日期:2008-08-15 发布日期:2019-09-12
  • 通讯作者: *,xqtea@vip.163.com
  • 作者简介:王礼中(1983— ),男,江苏南京人,硕士,主要从事茶树害虫的生物防治的研究。
  • 基金资助:
    国家科技支撑计划(2006BAD06B01)和浙江省科技计划(2003C2003)

Preparation of the Antibody Against EupsNPV Polyhedrin and Its Utilization in Detection of the Viral Pesticide

WANG Li-zhong1,2, XIAO Qiang1,*, ZHANG Chuan-xi2   

  1. 1. Tea Research Institute, Chinese Academy of Agricultural Sciences, Hangzhou 310008, China;
    2. Institute of Applied Entomology, Zhejiang University, Hangzhou 310029, China
  • Received:2008-04-01 Online:2008-08-15 Published:2019-09-12

摘要: 以茶毛虫核型多角体病毒(EupsNPV)的基因组DNA为模板,PCR扩增出全长为741 bp的ph基因编码区片段。将Ep-ph编码区插入pET-28-a,构建了原核表达载体pET-28-a-Ep-ph,转化大肠杆菌BL21(DE3),在IPTG诱导下进行了高效的表达。以经表达纯化的目的融合蛋白作为抗原,免疫新西兰大白兔,制备了EupsNPV的ph抗体,测得的抗体效价为6.4×104。Western blotting检测表明制得的抗体对核型多角体病毒有良好的特异性。利用制备的抗体用间接ELISA方法对茶毛虫病毒样品进行了定量分析,得到线性回归方程为y=0.4152x-0.8299,相关系数r=0.9897(P<0.01)。间接ELISA方法表明该抗体可以用于核型多角体病毒生物农药的定量检测,从而为核型多角体病毒的检测农药制剂提供了一种准确有效的方法。

关键词: 茶毛虫核型多角体病毒, 多角体蛋白基因, 多克隆抗体, 间接ELISA, 检测

Abstract: The 741 bp coding region of polyhedrin gene (ph) was amplified from Euproctis pseudoconspersa nucleopolyhedrovirus(EupsNPV)genome and its prokaryotic expression vector pET-28-a-Ep-ph was constructed. Then the prokaryotic expression plasmid was transformed into Escherichia.coli. BL21(DE3)for expression. The expressed fusion protein was separated by SDS-PAGE and retrieved from the gel. New Zealand white rabbit was immunized with the purified fusion protein and the antiserum against ph with a titre of 6.4×104 was prepared. Western blotting indicated that the prepared polyclonal antibody was specific for polyhedrin. The EupsNPV was detected by indirect ELISA and its regression equation was obtained: y=0.4152x-0.8299 with correlation coeffient r=0.9897(P<0.01). Indirect ELISA detection showed that the antibody could be used for quantitative detection of the NPV in a commercial bio-pesticide and provided an accurate and effective method for detection.

Key words: Euproctis pseudoconspersa nucleopolyhedrovirus(EupsNPV), polyhedrin gene, polyclonal antibody, indirect ELISA, detection

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