Rapid evolution in a pair of recent duplicate segments of rice

	Rapid evolution in a pair of recent duplicate segments of rice
	Jiang HF 1,2; Liu DY 3; Gu ZL 4; 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.