Rapid evolution in a pair of recent duplicate segments of rice | |
Jiang HF1,2; Liu DY3; Gu ZL4; Wang W[*]1 | |
刊名 | JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION |
2007 | |
卷号 | 308B期号:1页码:50-57 |
ISSN号 | 1552-5007 |
通讯作者 | wwang@mail.kiz.ac.en |
合作状况 | 其它 |
英文摘要 | Gene duplication has been considered the most important way of generating genetic novelties. The subsequent evolution right after gene duplication is critical for new function to occur. Here we analyzed the evolutionary pattern for a recently duplicated segment between rice chromosomes 11 and 12. This duplication event was estimated to occur about 6 million years ago, during the divergence of the B- and C-genome rice species. The duplicate segment in chromosome 12 has significantly higher frequency of sequence rearrangement rate than non-duplicated regions. The rearrangement rate is approximately 6.5 breakages/Mb per million years, about six times higher than the fastest rate ever reported in eukaryotes. The genes within both segments experienced accelerated nucleotide substitution rates revealed by synonymous (Ks) and non-synonymous divergence (Ka) between Oryza sativa indica and O. sativa japonica. Analysis using EST data also implicates rapid divergence in expression between these segmental duplicate genes. These overall rapid changes from different perspective for the first time provide evidence that relaxation of selection also occurs in large-scale duplications. |
收录类别 | SCI |
资助信息 | Grant sponsor: CAS-Max Planck Society Fellowship; Grant num- ber: KSCX2-SW-121; Grant sponsor: NSFC award; Grant number: 30325016; Grant sponsor: NSFC key grant; Grant number: 30430400. |
原文出处 | 2007308B50.pdf |
公开日期 | 2010-08-24 |
内容类型 | 期刊论文 |
源URL | [http://159.226.149.42:8088/handle/152453/4831] |
专题 | 昆明动物研究所_基因起源组 昆明动物研究所_细胞与分子进化重点实验室 |
作者单位 | 1.CAS-Max Planck Junior Research Group, Key Laboratory of Cellular and Molecular Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences (CAS), Kunming, Yunnan 650223, China 2.Graduate School of Chinese Academy Sciences, Beijing 100039, China 3.Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing 101300, China 4.Stanford Genome Technology Center, Stanford University, Palo Alto, California 94304 |
推荐引用方式 GB/T 7714 | Jiang HF,Liu DY,Gu ZL,et al. Rapid evolution in a pair of recent duplicate segments of rice[J]. JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION,2007,308B(1):50-57. |
APA | Jiang HF,Liu DY,Gu ZL,&Wang W[*].(2007).Rapid evolution in a pair of recent duplicate segments of rice.JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION,308B(1),50-57. |
MLA | Jiang HF,et al."Rapid evolution in a pair of recent duplicate segments of rice".JOURNAL OF EXPERIMENTAL ZOOLOGY PART B-MOLECULAR AND DEVELOPMENTAL EVOLUTION 308B.1(2007):50-57. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论