›› 2010, Vol. 12 ›› Issue (5): 17-23.DOI: 10.3969/j.issn.1008-0864.2010.05.04

• 综述 •    下一篇

植物DNA双链断裂损伤修复机制研究进展

朱彩霞1,2,古佳玉1,邵群2,王晶1,刘录祥1   

  1. (1.中国农业科学院作物科学研究所|国家农作物基因资源与基因改良重大科学工程, 北京 100081|2.山东师范大学生命科学学院, 济南 250014)
  • 收稿日期:2010-03-08 修回日期:2010-04-17 出版日期:2010-10-15 发布日期:2010-07-23
  • 通讯作者: 刘录祥,研究员,主要从事作物诱发突变与生物技术育种研究。E-mail:luxiang@263.net.cn
  • 作者简介:朱彩霞,硕士研究生,研究方向为植物分子生物学。
  • 基金资助:

    国家863计划项目(2007AA100102);“十一五”国家科技支撑计划项目(2008BAD97B01,2009BAA24B05);农业部农业公益性行业科研专项(200803034);国际原子能机构项目(CRP15651;CPR5017)资助。

Advances in Repair Mechanism of |DNA Double-strand Break Damage in Plant

ZHU Cai-xia1,2, GU Jia-yu1, SHAO Qun2, WANG Jing1, LIU Lu-xiang1   

  1. (1.National Key Facility for Crop Gene Resources and Genetic Improvement|Institute of Crop Sciences, Chinese Academy of |Agricultural Sciences, Beijing 100081|2.College of Life Science, Shandong Normal University, Jinan 250014, China)
  • Received:2010-03-08 Revised:2010-04-17 Online:2010-10-15 Published:2010-07-23

摘要:

DNA双链断裂(DSBs)是细胞最严重的损伤形式之一。高等动植物中主要通过非同源末端连接(NHEJ)途径进行DNA双链断裂修复。该途径不依赖DNA同源性,由一些修复因子如:Ku蛋白异二聚体、DNA-PKcs 、XRCC4、ligaseⅣ等,将断裂末端直接连接进行修复。综述了植物DNA双链断裂损伤修复的主要途径及其相关基因研究的进展,探讨了植物DNA损伤修复研究中存在的问题与发展方向。

关键词: DNA双链断裂;损伤修复;非同源末端连接;Ku蛋白;XRCC4

Abstract:

The DNA double-strand breaks (DSBs) is one of the most serious form of DNA damage. Non-homologous end-joining (NHEJ) is the major pathway to repair DNA double-strand break damages in both higher plants and animals. The NHEJ pathway does not rely on DNA homology, while the number of such repair factors as Ku protein heterodimer, DNA-PKcs, XRCC4 and ligaseⅣ, will be directly joined the end to repair. The research progresses in major repair pathway and key genes involving in DNA double-strand break damages in plant are summarized. The existing problems and perspectives in this field are also discussed.

Key words: DNA double-strand breaks, damage and repair, NHEJ, Ku protein, XRCC4

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