The impact of genorne triplication on tandem gene evolution in Brassica rapa

doi:10.3389/fpls.2012.00261

CORC > 中国农业科学院 > 蔬菜花卉研究所

	The impact of genorne triplication on tandem gene evolution in Brassica rapa
	Fang, Lu; Cheng, Feng; Wu, Jian; Wang, Xiaowu
刊名	FRONTIERS IN PLANT SCIENCE
	2012
卷号	3 页码:-
关键词	whole genome duplication tandem duplication tandem gene evolution Brassica rapa Arabidopsis thaliana Arabidopsis Iyrata Thellungiella parvula
ISSN号	1664-462X
DOI	10.3389/fpls.2012.00261
通讯作者	Fang, Lu
英文摘要	Whole genome duplication (WGD) and tandem duplication (TD) are both important modes of gene expansion. However, how WGD influences tandemly duplicated genes is not well studied. We used Brassica rapa, which has undergone an additional genome triplication (MT) and shares a common ancestor with Arabidopsis thaliana, Arabidopsis lyrata, and Thellungiella parvula, to investigate the impact of genome triplication on tandem gene evolution. We identified 2,137, 1,569, 1,751, and 1,135 tandem gene arrays in B. rapa, A. thaliana, A. lyrata, and T parvula respectively. Among them, 414 conserved tandem arrays are shared by the three species without WGT, which were also considered as existing in the diploid ancestor of B. rapa. Thus, after genome triplication, B. rapa should have 1,242 tandem arrays according to the 414 conserved tandems. Here, we found 400 out of the 414 tandems had at least one syntenic ortholog in the genome of B. rapa. Furthermore, 294 out of the 400 shared syntenic orthologs maintain tandem arrays (more than one gene for each syntenic hit) in B. rapa. For the 294 tandem arrays, we obtained 426 copies of syntenic paralogous tandems in the triplicated genome of B. rapa. In this study, we demonstrated that tandem arrays in B. rapa were dramatically fractionated after WGT when compared either to non-tandem genes in the B. rapa genome or to the tandem arrays in closely related species that have not experienced a recent whole genome polyploidization event.
学科主题	Plant Sciences
语种	英语
出版者	FRONTIERS RESEARCH FOUNDATION
WOS记录号	WOS:000208837900257
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/101934]
专题	蔬菜花卉研究所
作者单位	Chinese Acad Agr Sci, Inst Vegetables & Flowers, Beijing 100081, Peoples R China
推荐引用方式 GB/T 7714	Fang, Lu,Cheng, Feng,Wu, Jian,et al. The impact of genorne triplication on tandem gene evolution in Brassica rapa[J]. FRONTIERS IN PLANT SCIENCE,2012,3:-.
APA	Fang, Lu,Cheng, Feng,Wu, Jian,&Wang, Xiaowu.(2012).The impact of genorne triplication on tandem gene evolution in Brassica rapa.FRONTIERS IN PLANT SCIENCE,3,-.
MLA	Fang, Lu,et al."The impact of genorne triplication on tandem gene evolution in Brassica rapa".FRONTIERS IN PLANT SCIENCE 3(2012):-.