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应用生态学报 ›› 1999, Vol. 10 ›› Issue (1): 83-85.

• 研究论文 • 上一篇    下一篇

细菌卤代烷烃脱卤酶基因在拟南芥菜中的高效表达

郝林1, John Mundy2   

  1. 1. 沈阳师范学院生物系, 沈阳 110034;
    2. Copenhagen University, Φster Farimagsgade 2A, 1353 Copenhagen K, Denmark
  • 收稿日期:1998-05-26 修回日期:1998-09-10 出版日期:1999-01-25 发布日期:1999-01-25
  • 通讯作者: 郝 林,男,36岁,副教授,在读博士生,学科方向为分子生物学与生物工程,在国内外学术刊物上发表论文30余篇.
  • 基金资助:

    丹麦国家自然科学基金

Efficient expression of bacterial haloalkane dehalogenase gene in Arabidopsis thaliana

Hao Lin1, John Mundy2   

  1. 1. Biological Department, Shenyang Normal College, Shenyang 110034;
    2. Copenhagen University, Φster Farimagsgade 2A, 1353 Copenhagen K, Denmark
  • Received:1998-05-26 Revised:1998-09-10 Online:1999-01-25 Published:1999-01-25

摘要: 报道了细菌Xanthobacter autotrophicus编码卤代烷烃脱卤酶基因在拟南芥菜中的高效表达。以土壤农杆菌介导将该基因整合到拟南芥菜基因组中,经数代筛选得到了转基因纯合种子,Northern印迹和气相色谱检测表明,转基因的表达程度很高,酶量占细胞总可溶性蛋白的8%,酶活力达7.8mU·ml-1提取物。转基因植株在含二氯乙烷的培养基上不能生长。

关键词: 卤代烷烃脱卤酶基因, 拟南芥菜, 基因表达, 土壤农杆菌

Abstract: This paper dealt with efficient expression of haloalkane dehalogenase gene(dhlA) from Xanthobacter autotrophicus in Arabidopsis thaliana. The dhlA was transferred and integrated into genomes of A. thaliana mediated by Agrobacterium tumefaciens, and homozygous dhlA seeds were obtained after several generations selection on a special medium. Northern blotting and gas chromatography (GC) assay shows that the dhlA was expressed efficiently, the amount of the enzyme accounted for 8% of total cellular soluble protein, and the enzyme activity reached 7.8 mU·ml-1 cellular extract. The transgenic plants could not grow on the medium with 1,2-dichloroethane.

Key words: Haloalkane dehalogenase gene (dhlA), Arabidopsis thaliana, Gene expression, Agrobacterium tumefaciens