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中国农学通报 ›› 2019, Vol. 35 ›› Issue (27): 17-22.doi: 10.11924/j.issn.1000-6850.casb18050004

所属专题: 水稻

• 农学 农业基础科学 • 上一篇    下一篇

一种水稻真空渗透转化装置及方法的研究

钟巧芳1, 李维蛟2, 殷富有1, 张敦宇1, 陈 玲1, 陈 越1, 曾 民1, 程在全1   

  1. 1.云南省农业科学院生物技术与种质资源研究所;2.云南中医学院
  • 收稿日期:2018-05-02 修回日期:2019-09-06 接受日期:2018-10-24 出版日期:2019-09-24 发布日期:2019-09-24
  • 通讯作者: 程在全
  • 基金资助:
    国家转基因生物新品种培育科技重大专项子课题“长江上游稻区抗虫水稻新品种的培育”(2016ZX08001001-001-003);国家自然科学基金 项目“云南药用野生稻耿马马居群渗入系抗褐飞虱基因精细定位”(31460478);云南省科技计划项目“应用农杆菌-真空渗透法高效转化抗稻瘟病基 因”(2011FZ217),“云南元江普通野生稻高抗白叶枯病基因定位与评价研究”(2015FB159),“利用普通野生稻创制水稻育种优良亲本及其应用” (2016RA002)。

A Piece of Rice Vacuum Infiltration Equipment and Its Use Method

  • Received:2018-05-02 Revised:2019-09-06 Accepted:2018-10-24 Online:2019-09-24 Published:2019-09-24

摘要: 探究适用于水稻的真空渗透转化装置及方法,旨在解决目前水稻转基因效率低、转化体变异多、周期长等问题。以抽穗期的‘云资粳41号’幼穗作为受体,应用自制的水稻真空渗透装置对其短暂抽真空渗透浸染导入外源基因。本试验共计转化水稻30株,收获19860粒T0代种子。研究发现不同浓度除草剂对T0代种子的萌发影响不显著,但对T1代材料的生长发育却具有明显抑制作用,因此选择苗期喷施法进行抗性转化子筛选,最佳筛选浓度为20 mg/L。经除草剂抗性筛选,获得抗性苗135株。经PCR分子检测,最终获得阳性苗114株,表明外源DNA已成功导入到受体水稻基因组中。本研究首次应用真空渗透法快速实现了水稻外源基因的转化,为水稻及其他作物的基因转化提供了一种快速、有效的新装置和新途径。

关键词: 烯效唑浸种, 烯效唑浸种, 育苗密度, 毯状苗质量, 植株性状, 产量

Abstract: In order to solve the problems of low efficiency, high mutation and long period in rice genetic transformation, this paper first reported a piece of new equipment for vacuum infiltration transformation and its use method in rice. Rice variety ''Yunzijing 41'' was used as receptor in transformation. The whole rice plants at flowering stage were put inside the vacuum infiltration equipment. The young panicles in vivo were dipped in agrobacterium infection buffer. Then the agrobacterium-mediated transformation was carried out and enhanced by short time vacuum infiltration. In this experiment, a total of 30 rice plants were transformed and 19,860 T0 seeds were harvested. It was found that different concentrations of herbicides had no significant effect on the germination of T0 seeds, but had significant inhibitory effects on the growth and development of T1 plantlets. Therefore, the resistant transformants were selected by spraying herbicide at the seedling stage. The optimal screening concentration was 20 Mg/L. 135 resistant rice plants were obtained by herbicide resistance screening. 114 positive rice plants were obtained by PCR confirmation. It indicated that the foreign DNA has been successfully introduced into the recipient rice genome. This study first used the vacuum infiltration method and successfully introduced the exogenous genes into rice. That means we had developed a rapid and effective new way as well as a piece of equipment for gene transformation in rice and other cereal crops.