华北农学报 ›› 2017, Vol. 32 ›› Issue (2): 38-44. doi: 10.7668/hbnxb.2017.02.006

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同步检测PMWaV-1、PMWaV-2PMWaV-3的三重RT-qPCR方法的初步建立

胡加谊1,2, 罗志文1, 何凡1, 李向宏1, 胡福初1, 范鸿雁1, 刘志昕3, 张治礼1   

  1. 1. 海南省农业科学院 热带果树研究所, 农业部海口热带果树科学观测实验站, 海南省热带果树生物学重点实验室, 海南 海口 571100;
    2. 黄埔出入境检验检疫局, 广东 广州 510730;
    3. 中国热带农业科学院 热带生物技术研究所, 海南 海口 571101
  • 收稿日期:2017-01-20 出版日期:2017-04-28
  • 通讯作者: 张治礼(1970-),男,安徽临泉人,研究员,博士,主要从事果树生理与分子生物学研究。
  • 作者简介:胡加谊(1988-),男,广东梅州人,研究实习员,硕士,主要从事果树植物病理学研究。
  • 基金资助:
    海南省重点研发项目(ZDYF2016035);公益性行业(农业)科研专项经费项目(201203021);国家自然科学基金项目(31260460)

Establishment of a Triple RT-qPCR Method for the Simultaneous Detecting of PMWaV-1, PMWaV-2 and PMWaV-3

HU Jiayi1,2, LUO Zhiwen1, HE Fan1, LI Xianghong1, HU Fuchu1, FAN Hongyan1, LIU Zhixin3, ZHANG Zhili1   

  1. 1. Institute of Tropical Fruit Trees in Hainan Academy of Agricultural Sciences, Haikou Investigation Station of Tropical Fruit Trees in Ministry of Agriculture, Key Laboratory of Tropical Fruit Tree Biology of Hainan Province, Haikou 571100, China;
    2. Huangpu Entry-Exit Inspection and Quarantine Bureua, Guangzhou 510730, China;
    3. Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou 571101, China
  • Received:2017-01-20 Published:2017-04-28

摘要: 目前我国菠萝产区已相继报道3种菠萝凋萎相关病毒(PMWaV-1、PMWaV-2PMWaV-3)。通过建立这3种菠萝凋萎相关病毒实时荧光定量RT-PCR(RT-qPCR)同步定量检测方法,为菠萝凋萎病毒的定性定量研究提供技术手段。根据这3种菠萝凋萎相关病毒的外壳蛋白基因序列分别设计特异性引物和TaqMan水解探针,在优化PMWaV-1、PMWaV-2、PMWaV-3三重RT-qPCR反应体系后,以PMWaV-1、PMWaV-2、PMWaV-3 CP基因目的片段的重组质粒为标准品绘制标准曲线,初步建立了PMWaV-1、PMWaV-2、PMWaV-3三重RT-qPCR检测方法。其中PMWaV-1标准曲线为y=-3.283logx+39.02,其扩增效率达101.7%,线性相关系数R2=0.999;PMWaV-2标准曲线为y=-3.393 logx+37.53,其扩增效率为97.1%,线性相关系数R2=0.998;PMWaV-3标准曲线为y=-3.171 logx+38.48,其扩增效率为106.7%,线性相关系数R2=0.996;这表明3种菠萝凋萎相关病毒质粒标准品在同一反应体系中可稳定扩增,且线性关系表现良好,可用于后续试验。灵敏度试验数据表明,该方法对PMWaV-1、PMWaV-2、PMWaV-3的最低检测线分别为99,98,868拷贝;重复性试验表明PMWaV-1、PMWaV-2、PMWaV-3三重RT-qPCR扩增曲线的标准差小于0.267,变异系数小于1.44%。这表明建立的三重RT-qPCR检测方法可快速、准确、稳定地定量检测PMWaV-1、PMWaV-2、PMWaV-3等3种病毒,为PMWaV的定性定量研究和复合侵染机制的探索提供了技术基础。

关键词: 菠萝凋萎病, 检测方法, 实时荧光定量RT-PCR, PMWaV, TaqMan探针

Abstract: The objective of this paper was to provide a technique for quantitative and quanlitative studies of PMWaV by establishing the method of Real-time Fluorescent Quantitative RT-PCR (RT-qPCR)for simultaneous quantitative detection of PMWaV-1,PMWaV-2 and PMWaV-3.Primers and probes were designed and synthesized according to the CP gene of PMWaV-1,PMWaV-2 and PMWaV-3,respectively.After optimized the reaction system of triple RT-qPCR,the standard curves were generated by purified DNA of the recombined plasmid of PMWaV-1,PMWaV-2,PMWaV-3 coat protein gene,respectively.And the method of RT-qPCR for the simultaneous detection of PMWaV-1,PMWaV-2,PMWaV-3 had been improved.The amplification efficiency of PMWaV-1,PMWaV-2,PMWaV-3 in the RT-qPCR method was up to 101.7%,97.1%,106.7%,respectively.Meanwhile,with the R2 between 0.996 and 0.999.The sensibility test of triple RT-qPCR syetem showed the detection limit of quantification for PMWaV-1,PMWaV-2,PMWaV-3 was 99,98 and 868 copies,respectively.Moreover,repeats experiment datas showed that standard deviation was below 0.26 and variable coefficient was below 1.44%.This study indicated that the method for simultaneous detection and quantification of PMWaV-1,PMWaV-2,PMWaV-3 was a fast,sably and sensitive reaction system,which could be the technological base for quantitative and quanlitative studies of PMWaV.

Key words: Mealybug Wilt of Pineapple, Dctection method, RT-qPCR, PMWaV, TaqMan probe

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引用本文

胡加谊, 罗志文, 何凡, 李向宏, 胡福初, 范鸿雁, 刘志昕, 张治礼. 同步检测PMWaV-1、PMWaV-2PMWaV-3的三重RT-qPCR方法的初步建立[J]. 华北农学报, 2017, 32(2): 38-44. doi: 10.7668/hbnxb.2017.02.006.

HU Jiayi, LUO Zhiwen, HE Fan, LI Xianghong, HU Fuchu, FAN Hongyan, LIU Zhixin, ZHANG Zhili. Establishment of a Triple RT-qPCR Method for the Simultaneous Detecting of PMWaV-1, PMWaV-2 and PMWaV-3[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2017, 32(2): 38-44. doi: 10.7668/hbnxb.2017.02.006.

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