浙江农业学报 ›› 2025, Vol. 37 ›› Issue (12): 2468-2478.DOI: 10.3969/j.issn.1004-1524.20240730

• 动物科学 • 上一篇    下一篇

十足目虹彩病毒1和虾肝肠胞虫双重荧光定量PCR检测方法的建立

谈荣想1(), 斯广杰2, 孙海涛2, 许婷1,*()   

  1. 1.绍兴文理学院 生命与环境科学学院,浙江 绍兴 312000
    2.浙江华珍科技有限公司,浙江 诸暨 311804
  • 收稿日期:2024-08-13 出版日期:2025-12-25 发布日期:2026-01-09
  • 作者简介:谈荣想(1999—),男,江西瑞昌人,硕士研究生,研究方向为水生动物病害与免疫学。E-mail:2395774885@qq.com
  • 通讯作者: *许婷,E-mail:xuting@usx.edu.cn

Establishment of a double quantitative PCR method for the detection of Decapod iridescent virus 1 and Enterocytozoon hepatopenaei

TAN Rongxiang1(), SI Guangjie2, SUN Haitao2, XU Ting1,*()   

  1. 1. School of Life and Environmental Sciences, Shaoxing University, Shaoxing 312000, Zhejiang, China
    2. Zhejiang Huazhen Sci & Tech Co., Ltd., Zhuji 311804, Zhejiang, China
  • Received:2024-08-13 Online:2025-12-25 Published:2026-01-09

摘要: 为建立一种可同时检测十足目虹彩病毒1(Decapod iridescent virus 1, DIV1)与虾肝肠胞虫(Enterocytozoon hepatopenaei, EHP)的方法,本研究在已有DIV1实时荧光定量PCR(quantitative real-time PCR, qPCR)检测方法的基础上,开发了一种基于SYBR Green I的双重qPCR方法,分别靶向DIV1的主要衣壳蛋白(major capsid protein, MCP)基因和EHP的孢壁蛋白(spore wall protein, SWP)基因。结果显示,该方法中DIV1与EHP的熔解温度(Tm)分别为(82.0±0.5)℃和(77.0±0.5)℃,能够特异性检出DIV1和EHP,而对其他常见虾病原和健康虾样本的检测结果均为阴性;在35个循环内,DIV1与EHP的最低检测限分别为75 copies·μL-1和15 copies·μL-1;重复性试验显示,组内和组间变异系数均低于2%。综上,本研究建立的双重qPCR检测方法具有高度的特异性、灵敏度与重复性,适用于虾中DIV1和EHP感染的快速监测。

关键词: 双重SYBR Green I实时荧光定量PCR, 十足目虹彩病毒1, 虾肝肠胞虫,

Abstract:

To establish a method for simultaneous detection of Decapod iridescent virus 1 (DIV1) and Enterocytozoon hepatopenaei (EHP), this study developed a double SYBR Green I-based quantitative real-time PCR (qPCR) assay, building upon an established qPCR method for DIV1. The assay targets the major capsid protein (MCP) gene of DIV1 and the spore wall protein (SWP) gene of EHP. The results showed that the melting temperatures (Tm) for DIV1 and EHP were (82.0±0.5)℃ and (77.0±0.5)℃, respectively. The method specifically detected DIV1 and EHP, while showing negative results for other common shrimp pathogens and healthy shrimp samples. Within 35 amplification cycles, the limits of detection were 75 copies·μL-1 for DIV1 and 15 copies·μL-1 for EHP. Reproducibility tests showed that both intra- and inter-assay coefficients of variation were below 2%. In conclusion, the established double qPCR method exhibits high specificity, sensitivity, and reproducibility, and is suitable for rapid monitoring of DIV1 and EHP infections in shrimp.

Key words: double SYBR Green I quantitative real-time PCR, Decapod iridescent virus 1, Enterocytozoon hepatopenaei, shrimp

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