北方农业学报 ›› 2023, Vol. 51 ›› Issue (1): 31-37.doi: 10.12190/j.issn.2096-1197.2023.01.04

• 分子生物学 • 上一篇    下一篇

基于农杆菌介导法将CP4-EPSPS基因转入玉米自交系B73的研究

韩平安1,2, 常悦1,2, 唐宽刚1,2, 李晓东1,2, 王力伟1,2, 梁亚晖1,2, 杨静1,2, 石海波1,2, 吴新荣1,2   

  1. 1.内蒙古自治区农牧业科学院,内蒙古 呼和浩特 010031;
    2.内蒙古自治区甜菜品种遗传改良与种质创制重点实验室,内蒙古 呼和浩特 010031
  • 收稿日期:2023-01-03 出版日期:2023-02-20 发布日期:2023-05-22
  • 通讯作者: 石海波(1976—),女,副研究员,博士,主要从事作物生物技术的研究工作。 吴新荣(1967—),男,研究员,博士,主要从事作物生物技术的研究工作。
  • 作者简介:韩平安(1987—),女,副研究员,博士,主要从事作物生物技术的研究工作。
  • 基金资助:
    内蒙古农牧业创新基金项目(2022CXJJN09,2018CXJJN07); 内蒙古自治区“草原英才”创新人才团队项目; 2018 年度自治区本级引进第五类人才科研支持和岗位激励项目

Study on agrobacterium mediated transfer of CP4-EPSPS gene into maize inbred line B73

HAN Ping′an1,2, CHANG Yue1,2, TANG Kuan′gang1,2, LI Xiaodong1,2, WANG Liwei1,2, LIANG Yahui1,2, YANG Jing1,2, SHI Haibo1,2, WU Xinrong1,2   

  1. 1. Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences,Hohhot 010031,China;
    2. Inner Mongolia Key Laboratory of Sugarbeet Genetics and Germplasm Enhancement,Hohhot 010031,China
  • Received:2023-01-03 Online:2023-02-20 Published:2023-05-22

摘要: 【目的】建立玉米遗传转化体系培育抗除草剂玉米材料,解决玉米杂草危害问题。【方法】采用农杆菌介导法在玉米自交系B73幼胚中转入抗除草剂基因(CP4-EPSPS),通过PCR、qRT-PCR鉴定转基因植株;利用ddPCR技术筛选低拷贝转基因植株,并对低拷贝植株进行草铵膦抗性鉴定。【结果】在所获得的181株抗性植株中12株为阳性,转基因植株的外源抗除草剂基因(CP4-EPSPS)在转录水平上均能正常表达;转基因植株中筛选到低拷贝植株5株;抗性鉴定证明转基因植株均具有草铵膦抗性。收获T1代转基因低拷贝植株种子5份。【结论】建立了以B73为受体,基于农杆菌法介导的玉米遗传转化体系。

关键词: 玉米, 农杆菌介导法, 抗草甘膦基因(CP4-EPSPS), 遗传转化

Abstract: 【Objective】Establish a maize genetic transformation system to cultivate maize lines with herbicide tolerance and address the issue of weed damage in maize.【Methods】Herbicide tolerance gene(CP4-EPSPS)was transformed into immature embryos of maize inbred line B73 by agrobacterium mediated transformation. The transgenic plants were identified by PCR and qRT-PCR. Low copy transgenic events were screened by ddPCR,followed by phosphinothricin tolerance test.【Results】12 of the 181 acquired tolerance lines tested positive. The exogenous herbicide tolerance gene(CP4-EPSPS)of the transgenic plants expressed normally at the transcriptional level. Five low copy lines were selected from the transgenic plants. All the transgenic plants were phosphinothricin tolerant in the tolerance test. T1 seeds from the 5 transgenic low copy lines were harvested.【Conclusion】Established a maize genetic transformation system mediated by Agrobacterium transformation using B73.

Key words: Maize, Agrobacterium mediate transformation, Glyphosate resistance gene(CP4-EPSPS), Genetic transformation

中图分类号: 

  • S513.032