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农学学报 ›› 2021, Vol. 11 ›› Issue (8): 14-21.doi: 10.11923/j.issn.2095-4050.cjas20200200027

所属专题: 生物技术 小麦

• 农艺科学/生理生化 • 上一篇    下一篇

不同基因型荞麦遗传转化体系初探

王欣芳1(), 冯晋芳1, 侯思宇1, 冯晋华1, 杜伟1, 冯红梅1, 韩渊怀1, 刘龙龙2, 马名川2, 王俊珍3, 孙朝霞1, 李红英1()   

  1. 1山西农业大学农学院,山西太谷 030801
    2山西省农业科学院农作物品种资源研究所,太原 030031
    3凉山州西昌农业科学研究所,四川西昌 615000
  • 收稿日期:2020-02-18 修回日期:2020-03-22 出版日期:2021-08-20 发布日期:2021-08-26
  • 通讯作者: 李红英 E-mail:3123676106@qq.com;HONGYING1964@163.com
  • 作者简介:王欣芳,女,1997年出生,山西运城人,在读硕士研究生,研究方向:种质创新与遗传育种研究。通信地址:030801 山西省晋中市太谷区山西农业大学农学院,E-mail: 3123676106@qq.com
  • 基金资助:
    山西省农业科学院应用基础研究计划“苦荞种质评价创新和重要性状基因挖掘及遗传转化体系建立”(YGC2019FZ2);国家重点研发计划中欧政府间合作项目“苦荞生态育种”(2017YFE0117600);国家燕荞麦产业体系“育种技术与方法”(CARS-07-A-2);山西省应用基础研究项目“苦荞MYB30介导的水杨酸调控芦丁生物合成的分子机制”(201801D221296);山西省回国留学人员科研资助项目“赤霉素信号转导调控苦荞株高的分子机制”(2017-069)

Genetic Transformation System of Different Genotypes of Buckwheat: A Preliminary Study

Wang Xinfang1(), Feng Jinfang1, Hou Siyu1, Feng Jinhua1, Du Wei1, Feng Hongmei1, Han Yuanhuai1, Liu Longlong2, Ma Mingchuan2, Wang Junzhen3, Sun Zhaoxia1, Li Hongying1()   

  1. 1Agricultural College of Shanxi Agricultural University, Taigu 030801, Shanxi, China
    2Institute of Germplasm Resources, Shanxi Academy of Agriculture Science, Taiyuan 030031, Shanxi, China
    3Liangshan Xichang Institute of Agricultural Science, Xichang 615000, Sichuan, China
  • Received:2020-02-18 Revised:2020-03-22 Online:2021-08-20 Published:2021-08-26
  • Contact: Li Hongying E-mail:3123676106@qq.com;HONGYING1964@163.com

摘要:

本研究旨在利用遗传转化基础,打破荞麦杂交困难、种质创新难的瓶颈,提升荞麦研究水平。本试验以甜荞‘PI647061’和苦荞‘ZNQ152’为材料,设置正交实验对下胚轴进行组织培养,并通过农杆菌介导法侵染愈伤组织,用组织化学染色观察GUS基因的瞬时表达。试验结果表明:MS+2.0 mg/L 2,4-D+1.0 mg/L 6-BA可使下胚轴出愈率达90%以上。10种不同基因型荞麦下胚轴在MS+0.5 mg/L NAA + 1.0 mg/L 6-BA中分化率最高,再生率最高达52.6%。以携带遗传转化载体pRI201-AN-GUS的农杆菌LBA4404侵染愈伤组织,经选择培养后获得再生幼苗,进而在叶片中成功观察到GUS基因表达的蓝色斑点,转化阳性率为1.23%。本研究为探索关于荞麦优良基因的转化及建立有效的遗传再生体系提供了理论和实践基础。

关键词: 荞麦, 植物激素, 愈伤组织, 正交实验, 遗传转化

Abstract:

The aim is to utilize the basis of genetic transformation to break the bottleneck of buckwheat hybridization and germplasm innovation, and improve the research level of buckwheat. In this experiment, common buckwheat ‘PI647061’ and tartary buckwheat ‘ZNQ152’ were used as materials, and the hypocotyls were cultured by orthogonal experiment. The callus was infected by agrobacterium-mediated transformation, and the temporary expression of GUS gene was observed by histochemical staining. The results showed that MS + 2.0 mg/L 2,4-D + 1.0 mg/L 6-BA could make the calli ratio of hypocotyls reach more than 90%. In MS + 0.5 mg/L NAA + 1.0 mg/L 6-BA, hypocotyls of ten species of buckwheat had the highest differentiation rates, and the highest regeneration rate was 52.6%. The calli were infected by agrobacterium tumefaciens LBA4404, which carried the genetic transformation vector pRI201-AN-GUS. And the regenerated seedlings were obtained after selective culture, and then the blue spots of GUS gene expression were successfully observed in the leaves. The positive rate of transformation was 1.23%. This study provides a theoretical and practical basis for the exploration of the transformation of buckwheat excellent genes and the establishment of an effective genetic regeneration system.

Key words: Buckwheat, Plant Hormones, Callus, Orthogonal Experiment, Genetic Transformation

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