植物学报 ›› 2023, Vol. 58 ›› Issue (3): 440-448.DOI: 10.11983/CBB22221

• 技术方法 • 上一篇    下一篇

野大麦高效组培快繁及农杆菌介导的愈伤侵染体系建立

刘叶飞1,2, 赵海霞2, 姜希萍2, 邱锐1,2, 周昕越1, 赵彦1(), 付春祥2()   

  1. 1内蒙古农业大学草原与资源环境学院/农业农村部饲草栽培、加工与高效利用重点实验室/草地资源教育部重点实验室, 呼和浩特 010018
    2中国科学院青岛生物能源与过程研究所, 中国科学院生物燃料重点实验室, 山东省能源研究院, 山东省能源生物遗传资源重点实验室 青岛新能源山东省实验室, 青岛 266101
  • 收稿日期:2022-09-13 接受日期:2022-11-15 出版日期:2023-05-01 发布日期:2023-05-17
  • 通讯作者: *E-mail: zhaoyannmg@163.com; fucx@qibebt.ac.cn
  • 基金资助:
    内蒙古自治区关键技术攻关计划(2020GG0176);“科技兴蒙”重点专项(2020-科技兴蒙-草种业技术创新中心-2);国家自然科学基金(32160326);中国科学院战略性先导科技专项(A类)(XDA26030301)

Establishment of Highly Efficient Tissue Culture and Agrobacterium-mediated Callus Infection Systems for Hordeum brevisubulatum

Yefei Liu1,2, Haixia Zhao2, Xiping Jiang2, Rui Qiu1,2, Xinyue Zhou1, Yan Zhao1(), Chunxiang Fu2()   

  1. 1Key Laboratory of Grassland Resources of Ministry of Education/Key Laboratory of Forage Cultivation, Processing and Eficient Utilization of Ministry of Agriculture and Rural Areas/College of Grassland, Resources And Environment of Inner Mongolia Agricultural University, Hohhot 010018, China
    2Qingdao New Energy Shandong Laboratory, Shandong Key Laboratory of Energy Biogenetic Resources, Shandong Energy Research Institute, Key Laboratory of Biofuels, Chinese Academy of Sciences, Qingdao Institute of Bioenergy and Process, Chinese Academy of Sciences Qingdao 266101, China
  • Received:2022-09-13 Accepted:2022-11-15 Online:2023-05-01 Published:2023-05-17
  • Contact: *E-mail: zhaoyannmg@163.com; fucx@qibebt.ac.cn

摘要: 野大麦(Hordeum brevisubulatum)为禾本科大麦属多年生草本植物, 具有较强的抗寒和耐盐碱能力, 是挖掘抗逆基因的优良种质资源。但目前尚未见野大麦遗传转化体系的报道。该研究以蒙农1号杂交野大麦成熟胚为外植体诱导愈伤组织, 建立了野大麦高效组培快繁体系, 分化率达70%, 快繁系数为35。在此基础上, 利用根癌农杆菌(Agrobacterium tumefaciens) EHA105菌株侵染筛选获得的高质量愈伤系YZ101, 通过优化侵染条件使侵染率接近30%。该体系的建立为野大麦功能基因组研究与分子设计育种奠定了基础。

关键词: 野大麦, 组培, 成熟胚, 愈伤组织系, 农杆菌侵染

Abstract: Hordeum brevisubulatum is a perennial grass belonging to the genus Hordeum in the Poaceae with strong cold and salt-alkali tolerance, which is an excellent germplasm resource for mining stress resistance genes. However, there are few reports on the genetic transformation system in H. brevisubulatum. In this study, the mature embryos in wild barley (Mengnong 1 hybrid) seeds were employed as explants to induce high quality embryogenic calli. A highly efficient tissue culture system was established for Mengnong 1 hybrid wild barley with approximate 70% of differentiation rate and the propagation coefficient was 35. Furthermore, Agrobacterium tumefaciens strain EHA105 was used to infect the wild barley callus line YZ101, and the infection efficiency was approximate 30% with optimized infection conditions. This study will facilitate gene function deciphering and developing novel germplasm in H. brevisubulatum through molecular design breeding.

Key words: Hordeum brevisubulatum, tissue culture, mature embryo, callus line, Agrobacterium infection