生物技术通报 ›› 2013, Vol. 0 ›› Issue (3): 90-95.

• 研究报告 • 上一篇    下一篇

植物线粒体和叶绿体RNA编辑的比较

万平   

  1. 首都师范大学生命科学学院,北京 100048
  • 收稿日期:2012-10-24 修回日期:2013-03-21 出版日期:2013-03-20 发布日期:2013-03-21
  • 作者简介:万平,男,博士,研究方向:生物信息学;E-mail :wanp_cnu@yahoo.com.cn

Comparasion of RNA Editing in Plant Mitochondria and Chloroplasts

Wan Ping   

  1. College of Life Science,Capital Normal University,Beijing 100048)
  • Received:2012-10-24 Revised:2013-03-21 Published:2013-03-20 Online:2013-03-21

摘要: 植物中RNA 编辑发生在叶绿体和线粒体两种细胞器中,通过对非维管植物(角苔)和维管植物(蕨类和被子植物) 线粒体中4 892 个RNA 编辑位点和叶绿体中1 228 个RNA 编辑位点的(1)氨基酸转移概率、(2)密码子转移概率、(3)编辑位 点在密码子中出现位置概率、(4)编辑位点-1 位碱基出现概率、(5)编辑位点+1 位碱基出现概率5 个方面进行比较分析。结果发现, 被子植物中线粒体和叶绿体RNA 编辑在氨基酸转移概率、密码子转移概率方面存在显著差异。

关键词: 非维管植物, 维管植物, 线粒体, 叶绿体, RNA, 编辑

Abstract: In plants, the process of RNA editing occurs in organelles chloroplasts and mitochondria. In this work, we analyzed the 4 892 mitochondrial RNA editing sites and 1 228 chloroplastic RNA editing sites of non-vascular and vascular land plants in features of(1)the probabilities of amino acid transitions, (2)the probabilities of codon transitions, (3)the probabilities of positions of editing site occurring in the codon, (4)the probabilities of the occurrence of four bases at the minus 1 position near the RNA editing site, and(5)the probabilities of the occurrence of four bases at the plus 1 position near the RNA editing site. We find that in eudicot, the probabilities of amino acid transitions and the probabilities of codon transitions are both significantly different between mitochondrial and chloroplast RNA editing.

Key words: Non-vascular land plants, Vascular land plants, Mitochondrion, Chloroplast, RNA editing