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园艺学报 ›› 2025, Vol. 52 ›› Issue (7): 1758-1768.doi: 10.16420/j.issn.0513-353x.2024-0690

• 遗传育种·种质资源·分子生物学 • 上一篇    下一篇

马铃薯CRISPR/Cas9介导的毛状根高效基因编辑体系的建立

宋倩娜1,2, 宋陆帅1,3, 段永红1, 白小东3,*(), 冯瑞云1,2,*()   

  1. 1 山西农业大学农学院,山西太谷 030801
    2 山西省农业科学院作物科学研究所,太原 030031
    3 山西农业大学高寒区作物研究所,马铃薯遗传改良与种质创新山西省重点实验室,山西大同 037008
  • 收稿日期:2024-10-14 修回日期:2025-04-16 出版日期:2025-07-23 发布日期:2025-07-23
  • 通讯作者:
  • 基金资助:
    山西省农业科学院作物科学研究所博士基金项目(ZB1102); 山西农业大学博士科研启动项目(2021BQ44); 山西省基础研究计划项目(202303021212112); 山西省基础研究计划项目(202203021211272); 山西农业大学农学院育种工程专项(YZ2021-04); 山西省重点研发计划项目(202102140601004); 山西省农业关键核心技术攻关项目(NYGG30-02)

Establishment a System to Obtain CRISPR/Cas9 Genome Editing Plants Based on Hairy Root Transformation in Potatoes

SONG Qianna1,2, SONG Lushuai1,3, DUAN Yonghong1, BAI Xiaodong3,*(), and FENG Ruiyun1,2,*()   

  1. 1 College of Agriculture,Shanxi Agricultural University,Taigu,Shanxi 030801,China
    2 Institute of Crop Sciences,Shanxi Academy of Agricultural Sciences,Taiyuan 030031,China
    3 Shanxi Key Laboratory of Potato Genetic Improvement and Germplasm Innovation,Institute of High Altitude Crop of Shanxi Agricultural University,Datong,Shanxi 037008,China
  • Received:2024-10-14 Revised:2025-04-16 Published:2025-07-23 Online:2025-07-23

摘要:

以四倍体栽培马铃薯品种‘Desiree’‘青薯9号’和‘晋薯16号’为研究材料,StFBH3StbHLH52StPDS为靶基因,构建5个GFP荧光筛选CRISPR/Cas9基因编辑载体。通过发根农杆菌介导的遗传转化法侵染茎段诱导产生毛状根,评估转化频率及编辑效率。进一步探索毛状根再生体系,并对再生马铃薯完整植株进行突变鉴定。测序检测表明5个靶位点在3个品种中均有编辑活性,StPDS单靶点在Desiree和晋薯16号毛状根中的敲除效率分别为87.8%和80.0%,StFBH3单靶点在青薯9号毛状根中的敲除效率为72.7%。StbHLH52的双靶点在Desiree毛状根中的片段删除效率可达19.4%。基因编辑的毛状根经组织培养再生形成植株,Desiree、青薯9号和晋薯16号的再生效率分别为60%、75%和50%,再生植株的编辑效率为100%,且可获得StPDS基因敲除的白化植株。该技术体系的建立可快速验证基因编辑靶位点活性,高效获得基因编辑马铃薯植株,为马铃薯基因功能研究及精准遗传育种提供技术支撑。

关键词: 马铃薯, GFP, 基因编辑, 毛状根, 遗传转化, 植株再生

Abstract:

The StFBH3StbHLH52 and StPDS genes were targeted by five CRISPR/Cas9 vectors for genome editing with GFP fluorescence screening marker in tetraploid potato cultivar Desiree,Qingshu 9 and Jinshu 16. The stem segments were infected by Agrobacterium rhizogenes-mediated genetic transformation to induce hairy roots,then the transformation rate and gene editing efficiency were evaluated. Further,whole potato plants were regenerated from hairy roots based on the optimized regeneration system and the mutations were identified. The sequencing showed that five editing vectors were all activity in the three potato varieties. Among them,the knockout efficiency for single target of StPDS were 87.8% and 80.0% in hairy roots of Desiree and Jinshu 16,respectively,while that of StFBH3 was 72.7% in Qingshu 9 hairy roots. The fragment deletion efficiency for dual-target of StbHLH52 was 19.4% in Desiree hairy roots. Moreover,the efficiency of plants regenerated from hairy roots in Desiree,Qingshu 9 and Jinshu 16 were 60%,75% and 50%,respectively. The editing efficiency of regenerated plants was 100%,and the StPDS-knockout line displayed the albino phenotype. The establishment of technology system in this study can quickly verify the target site activity and efficiently obtained edited potato plants,which provides a technical support for gene function research and precise genetic breeding in potatoes.

Key words: potato, GFP, gene editing, hairy root, transformation, plant regeneration