生物技术进展 ›› 2026, Vol. 16 ›› Issue (4): 853-862.DOI: 10.19586/j.2095-2341.2026.0041

• 转基因检测技术专题 • 上一篇    下一篇

抗虫耐除草剂玉米BBL2-2实时荧光定量PCR检测方法的建立

董美1(), 孟丽霞1, 文婷婷1, 苗朝华1, 金芜军1,2()   

  1. 1.中国农业科学院生物技术研究所,北京 100081
    2.三亚中国农业科学院国家南繁研究院,海南 三亚 572024
  • 收稿日期:2026-02-27 接受日期:2026-03-10 出版日期:2026-07-25 发布日期:2026-09-11
  • 通信作者: 金芜军
  • 作者简介:董美 E-mail: dmei2010@126.com
  • 基金资助:
    国家重点研发计划项目(2023YFF1001600);海南省重点研发计划项目(ZDYF2025GXJS151)

Establishment of a Real-time Quantitative PCR Detection Method for Insect-resistant and Herbicide-tolerant Maize BBL2-2

Mei DONG1(), Lixia MENG1, Tingting WEN1, Chaohua MIAO1, Wujun JIN1,2()   

  1. 1.Biotechnology Research Institute,Chinese Academy of Agricultural Sciences,Beijing 100081,China
    2.National Nanfan Research Institute,Chinese Academy of Agricultural Sciences,Hainan Sanya 572024,China
  • Received:2026-02-27 Accepted:2026-03-10 Online:2026-07-25 Published:2026-09-11
  • Contact: Wujun JIN

摘要:

我国转基因玉米推广迅速,是获得最多转基因生物安全证书的粮食作物,因此针对转基因玉米品系建立特异、灵敏、可操作的检测方法是十分必要的。根据抗虫耐除草剂玉米BBL2-2转化体旁侧序列设计特异性引物探针,建立了BBL2-2玉米转化体实时荧光定量PCR检测方法,该方法具有良好的特异性;检出限可以达到0.05%(20拷贝),定量限可以达到0.1%(40拷贝);标准曲线线性度良好,方法的正确度和精密度均≤25%,符合相关标准要求;实验室间验证与内部测试结果相符,展现了良好的重复性和再现性;不确定度的评定方法可操作性强,既确保了定量结果的可靠性,也为标识阈值管理提供了依据。研究建立的抗虫耐除草剂玉米BBL2-2实时荧光定量PCR检测方法为该品系转基因玉米的商业化推广提供了检测和监管等技术支撑。

关键词: BBL2-2玉米, 转化体特异性PCR, 定量检测, 实验室间验证, 不确定度

Abstract:

The adoption of genetically modified (GM) maize has expanded rapidly in China, and it has become the crop with the highest number of safety certificates issued for genetically modified organisms (GMOs). Therefore, it is essential to establish a specific, sensitive, and operable detection method for GM maize lines. This study designed specific primer-probe sets based on the flanking sequences of the insect-resistant and herbicide-tolerant maize event BBL2-2, establishing a real-time quantitative PCR detection method for this event. The method exhibited high specificity. Its limit of detection (LOD) reached 0.05% (equivalent to 20 copies), and the limit of quantification (LOQ) reached 0.1% (equivalent to 40 copies). The standard curve showed excellent linearity, and both the trueness and precision of the method were ≤25%, complying with relevant standard requirements. Inter-laboratory validation results were consistent with internal test results, demonstrating good repeatability and reproducibility. The established uncertainty assessment method was highly operable, ensuring the reliability of quantitative results and providing a basis for labeling threshold management. The developed real-time quantitative PCR detection method for insect-resistant and herbicide-tolerant maize BBL2-2 offers technical support for detection and regulatory oversight, facilitating the commercial deployment of this GM maize event.

Key words: BBL2-2 maize, event-specific PCR, quantitative detection, inter-laboratory validation, uncertainty

中图分类号: