南京林业大学学报(自然科学版) ›› 2012, Vol. 36 ›› Issue (06): 130-134.doi: 10.3969/j.jssn.1000-2006.2012.06.026

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位点特异性DNA内切酶在植物基因打靶中的应用

程强,胥猛,黄敏仁*   

  1. 南京林业大学, 江苏省杨树种质创新与品种改良重点实验室,江苏南京210037
  • 出版日期:2012-11-30 发布日期:2012-11-30
  • 基金资助:
    收稿日期:2012-06-01修回日期:2012-10-11
    基金项目:国家自然科学基金面上项目(31170620)
    第一作者:程强,讲师,博士。 *通信作者:黄敏仁,教授。 Email: njmrhuang@njfu.edu.cn。
    引文格式:程强,胥猛,黄敏仁. 位点特异性DNA内切酶在植物基因打靶中的应用[J]. 南京林业大学学报:自然科学版,2012,36(6):130-134.

The application of sitespecific DNA endonucleases in plant gene targeting

CHENG Qiang, XU Meng, HUANG Minren*   

  1. Jiangsu Key Laboratory for Poplar Germplasm Enhancement and Variety Improvement,  Nanjing Forestry University, Nanjing 210037, China
  • Online:2012-11-30 Published:2012-11-30

摘要: 基因打靶是在基因组指定位点插入、删除和替换DNA序列的技术。由于同源重组频率低,在植物中高效的基因打靶技术一直未被建立,制约了植物基因功能和分子育种的研究。近年来,人工设计的锌指蛋白和TAL效应因子DNA结合结构域实现了对全新DNA序列的识别。人工设计的DNA结合结构域连接核酸内切酶能在基因组指定位点创造双链DNA断裂,进而产生定点突变和促进同源重组。笔者重点介绍锌指核酸酶和TAL效应因子核酸酶在植物基因组定点突变和基因打靶中的研究进展,并对目前存在的问题进行分析。

Abstract: Gene targeting is a powerful tool for sitespecific insertion, deletion and replacement of DNA in genome. Gene targeting technology in plants is far from routine due to the low frequency of homologous recombination that limits the study of gene function and molecular breeding. Recently, breakthrough has been made in the engineered DNA binding domains combined with zinc finger protein and transcription activatorlike effector. Engineered DNA binding domain fusing endonucleases can specifically breaks the DNA doublestrand, then generate sitedirected mutagenesis and facilitate homologous recombination. In this review, we focus on the application of zinc finger nuclease and TAL effector nuclease in sitedirected mutagenesis and gene targeting of plant genome and analyze their existing problems.

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