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植物研究 ›› 2006, Vol. 26 ›› Issue (3): 297-301.doi: 10.7525/j.issn.1673-5102.2006.03.011

• 论文 • 上一篇    下一篇

Ri质粒介导的几丁质酶基因转化小麦的研究

李新玲1,2;曲 敏3;徐香玲1*;李集临1   

  1. 1.哈尔滨师范大学生命与环境科学学院,哈尔滨 150080 2.东北林业大学林木遗传育种教研室,哈尔滨 150040 3.哈尔滨商业大学食品工程学院生物系,哈尔滨 150010
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2006-05-20 发布日期:2006-05-20
  • 通讯作者: 徐香玲
  • 基金资助:
     

Chitinase gene mediated by Ri plasmid transfering wheat

LI Xin-Ling;QU Min;XU Xiang-Ling*;LI Ji-Lin   

  1. 1.School of Life and Environmental Science, Harbin Normal University, Harbin 1500802.Teaching and Research Section of Forestry Genetics and Breeding,Northeast Forestry University,Harbin 150040 3.Biology department of Food Engineering College, Harbin University of Commerce, Harbin 150010
  • Received:1900-01-01 Revised:1900-01-01 Online:2006-05-20 Published:2006-05-20
  • Contact: XU Xiang-Ling
  • Supported by:
     

摘要: 采用L9(34)的正交试验,以带有pMLH7133-Chi质粒的发根农杆菌为介导,对栽培品种春小麦东农7742、龙麦9814和Hite的幼胚愈伤组织进行了遗传转化研究。结果表明:基因型为东农7742、菌液浓度OD600=0.8、共培养时间2 d、乙酰丁香酮(As)浓度为100 μm是最佳的试验组合;各影响因素的主次顺序是:基因型>乙酰丁香酮的浓度>菌液浓度>共培养时间。共获得138株Hyg抗性植株,经PCR及PCR-Southern检测初步证明,外源几丁质酶基因已整合到其中5株的基因组中,又对3株阳性植株进行了RT-PCR扩增和几丁质酶活力测定,证明外源几丁质酶基因已在小麦基因组中稳定表达。

关键词: 小麦, 几丁质酶基因, Ri质粒, 转基因植株

Abstract: Mediated by Agrobacterium rhizogene which contains plasmid pMLH7133-Chi, the genetic transformation experiment was carried out with the callus of Spring Wheat Dongnong 7742, Longmai 9814, and Hite as the acceptor in the way of orthogonal test of L9(34). The result indicates that the best group is Dongnong 7742, 100 μm of Acetosyringone, A. rhizogene’s OD600=0.8 and about two days’ co-cultivation; the order of influential factors is: genotype>concentration of Acetosyringone>concentration of A. rhizogene> co-culture period. 138 regenerated plants were obtained in the experiment. Then detected by PCR amplification and PCR-Southern, the result suggests that the foreign Chitinase genes have already been introduced into 5 wheat genomes of all. Three of the five plants were detected again by RT-PCR and Chitinase activity methods, which proved that the foreign Chitinase gene has expressed steadily in wheat genome.

Key words: wheat, Chitinase gene, Ri plasmid, transgenic plant

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