生物技术进展 ›› 2026, Vol. 16 ›› Issue (4): 863-877.DOI: 10.19586/j.2095-2341.2026.0029

• 转基因检测技术专题 • 上一篇    下一篇

转基因大豆多靶标筛查质粒DNA标准分子的研制

刘鹏飞1(), 刘娜1, 李瑞环1, 付伟2, 徐超1, 兰青阔1, 王永1, 赵新1()   

  1. 1.天津市农业科学院种质资源与生物技术研究所,天津 300384
    2.农业农村部科技发展中心,北京 100176
  • 收稿日期:2026-02-09 接受日期:2026-03-13 出版日期:2026-07-25 发布日期:2026-09-11
  • 通信作者: 赵新
  • 作者简介:刘鹏飞E-mail: swkxlpf@163.com
  • 基金资助:
    国家科技重大专项(2022ZD04020)

Development of Multi-target Plasmid DNA Reference Materials for Screening Transgenic Soybeans

Pengfei LIU1(), Na LIU1, Ruihuan LI1, Wei FU2, Chao XU1, Qingkuo LAN1, Yong WANG1, Xin ZHAO1()   

  1. 1.Institute of Germplasm Resources and Biotechnologe,Tianjin Academy of Agricultural Sciences,Tianjin 300384,China
    2.Development Center of Science and Technology,Ministry of Agriculture and Rural Affairs,Beijing 100176,China
  • Received:2026-02-09 Accepted:2026-03-13 Online:2026-07-25 Published:2026-09-11
  • Contact: Xin ZHAO

摘要:

大豆不仅含有丰富的植物蛋白和食用油脂,还含有异黄酮、卵磷脂等有益营养物质,是重要的食用、饲用和油料作物。我国大豆需求量和进口量逐年增加,大豆进口依存度长期在80%以上。以我国自主研发并获得转基因生物安全证书的5种转基因大豆(DBN9004、DBN8002、SHZD32-1、中黄6106和CAL16)为研究对象,依托各转化体及其衍生品种定性和定量检测方法的标准,将以上5种转基因大豆及大豆内标准基因Lectin聚合构建到双元载体骨架上,开展了质粒分子验证、质粒保存介质的筛选、验证方法特异性、检测适用性以及与基因组DNA的可替代性等实验,研制转基因筛查检测用质粒DNA标准分子pUC-soy-identification。结果显示,制备的质粒标准分子测序结果与靶标序列完全一致,酶切结果、qPCR扩增结果等均符合预期,鲑鱼精DNA更能使拷贝数比值接近理论值。在基因特异性、适用性、互换性检测中的应用符合阳性对照要求,表明制备的阳性质粒标准分子可用于转基因大豆DBN9004、DBN8002、SHZD32-1、中黄6106和CAL16及其加工产品的定量检测,为我国转基因生物安全管理和标识制度的实施提供了有效的技术支撑。

关键词: 转基因大豆, 质粒标准分子, 适用性, 特异性

Abstract:

Soybeans are rich in plant proteins and edible oils, and also provide beneficial nutrients such as isoflavones and lecithin, making them important crops for food, feed, and oil production. China's demand for and import volume of soybeans have increased year by year, with import dependence at times exceeding 80%. Five transgenic soybean events (DBN9004, DBN8002, SHZD32-1, ZH6106, and CAL16), which were independently developed in China and have obtained biosafety certificates for genetically modified organisms, were used as research objects. On the basis of the standard qualitative and quantitative detection methods for each transgenic event and its derivative varieties, the five transgenic soybean events and the endogenous standard gene Lectin were assembled into a binary vector. A series of experiments, including plasmid molecular verification, screening of plasmid preservation medium, method specificity validation, and detection applicability and interchangeability testing using genomic DNA, was then carried out to develop the plasmid DNA reference molecule pUC-soy-identification for transgenic screening. The results showed that the sequence of the prepared plasmid reference molecule was completely consistent with the target sequence, and both restriction enzyme digestion and qPCR amplification produced the expected results. The addition of salmon sperm DNA helped bring the copy number ratio closer to the theoretical value. The plasmid preparation met the specified criteria for use as a positive control in specificity, applicability, and interchangeability tests targeting DBN9004, DBN8002, SHZD32-1, ZH6106, and CAL16. Therefore, the resulting plasmid reference molecule can be applied to the quantitative detection of the aforementioned transgenic soybeans and their processed products, and provides a robust technical tool for the biosafety management and labeling compliance of genetically modified organisms in China.

Key words: transgenic soybean, plasmid reference materials, applicability, specificity

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