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园艺学报 ›› 2014, Vol. 41 ›› Issue (6): 1257-1266.

• 新方法 • 上一篇    下一篇

菠萝凋萎相关病毒–2实时荧光定量RT-PCR检测方法的建立

胡加谊1,2,罗志文2,范鸿雁2,李向宏2,刘志昕3,何 凡2,*   

  1. (1海南大学环境与植物保护学院,海口 570228;2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,海口 571100;3中国热带农业科学院热带生物技术研究所,海口 571101)
  • 收稿日期:2014-01-27 出版日期:2014-06-25 发布日期:2014-06-25

Development of a Real-time Fluorescent Quantitative RT-PCR Method for the Detection of Pineapple mealybug wilt associated virus-2

HU Jia-yi1,2,LUO Zhi-wen2,FAN Hong-yan2,LI Xiang-hong2,LIU Zhi-xin3,and HE Fan2,*   

  1. (1 College of Environment and Plant Protection,Hainan University,Haikou 570228,China;2 Institute of Tropical Fruit Trees,Hainan Academy of Agricultural Sciences/Haikou Investigation Station of Tropical Fruit Trees,Ministry of Agriculture,Haikou 571100,China;3Institute of Tropical Bioscience and Biotechnology,Chinese Academy of Tropical Agricultural Sciences,Haikou 571101,China)
  • Received:2014-01-27 Online:2014-06-25 Published:2014-06-25

摘要: 菠萝凋萎相关病毒(Pineapple mealybug wilt associated virus-2,PMWaV-2)是引起的菠萝凋萎病(Mealybug wilt of pineapple,MWP)的重要病原。本研究中根据PMWaV-2外壳蛋白基因序列设计特异性引物和探针,建立基于TaqMan探针的实时荧光定量RT-PCR检测方法。该方法能高灵敏检测出阳性样品,对阴性样品及空白对照均无荧光反应;灵敏度比普通PCR高100倍;重复性试验表明批内和批间变异系数均在1.85%以内,表明本方法是一种操作简便、特异性强、灵敏度高、重复性较好的PMWaV-2定量检测方法。

关键词: 菠萝, 菠萝凋萎病毒–2(PMWaV-2), TaqMan探针, 实时荧光定量RT-PCR, 检测

Abstract: Pineapple mealybug wilt associated virus-2(PMWaV-2)is an important pathogen that causes Mealybug wilt of pineapple(MWP). This study established a real-time quantitative RT-PCR method with TaqMan probe based on specific primers of conserved nucleotide sequence of PMWaV-2 coat protein gene. The results showed that the method is highly sensitive to positive sample,but has no fluorescence signal to health sample and water control. The sensitivity of real-time quantitative RT-PCR is about 100 times higher than regular PCR. Three-time repeats revealed that the coefficients of variation between the intra- and inter-assay were both within 1.85%,indicating a simple,specificity,high sensitivity,and reliable reproducibility detection method to PMWaV-2.

Key words: pineapple, PMWaV-2, TaqMan probe, real-time quantitative RT-PCR, detction

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