Biased Gene Fractionation and Dominant Gene Expression among the Subgenomes of Brassica rapa

doi:10.1371/journal.pone.0036442

CORC > 中国农业科学院 > 蔬菜花卉研究所

	Biased Gene Fractionation and Dominant Gene Expression among the Subgenomes of Brassica rapa
	Cheng, Feng 1; Wu, Jian 1; Fang, Lu 1; Sun, Silong 1; Liu, Bo 1; Lin, Ke 2; Bonnema, Guusje 2; Wang, Xiaowu 1
刊名	PLOS ONE
	2012
卷号	7 期号:5 页码:-
ISSN号	1932-6203
DOI	10.1371/journal.pone.0036442
通讯作者	Cheng, Feng
英文摘要	Polyploidization, both ancient and recent, is frequent among plants. A "two-step theory'' was proposed to explain the meso-triplication of the Brassica "A'' genome: Brassica rapa. By accurately partitioning of this genome, we observed that genes in the less fractioned subgenome (LF) were dominantly expressed over the genes in more fractioned subgenomes (MFs: MF1 and MF2), while the genes in MF1 were slightly dominantly expressed over the genes in MF2. The results indicated that the dominantly expressed genes tended to be resistant against gene fractionation. By re-sequencing two B. rapa accessions: a vegetable turnip (VT117) and a Rapid Cycling line (L144), we found that genes in LF had less non-synonymous or frameshift mutations than genes in MFs; however mutation rates were not significantly different between MF1 and MF2. The differences in gene expression patterns and on-going gene death among the three subgenomes suggest that "two-step'' genome triplication and differential subgenome methylation played important roles in the genome evolution of B. rapa.
学科主题	Multidisciplinary Sciences ; MULTIDISCIPLINARY SCIENCES
语种	英语
出版者	PUBLIC LIBRARY SCIENCE
WOS记录号	WOS:000305341500076
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/101926]
专题	蔬菜花卉研究所
作者单位	1.Chinese Acad Agr Sci, Inst Vegetables & Flowers, Beijing 100193, Peoples R China 2.Lab Plant Breeding, Wageningen, Netherlands
推荐引用方式 GB/T 7714	Cheng, Feng,Wu, Jian,Fang, Lu,et al. Biased Gene Fractionation and Dominant Gene Expression among the Subgenomes of Brassica rapa[J]. PLOS ONE,2012,7(5):-.
APA	Cheng, Feng.,Wu, Jian.,Fang, Lu.,Sun, Silong.,Liu, Bo.,...&Wang, Xiaowu.(2012).Biased Gene Fractionation and Dominant Gene Expression among the Subgenomes of Brassica rapa.PLOS ONE,7(5),-.
MLA	Cheng, Feng,et al."Biased Gene Fractionation and Dominant Gene Expression among the Subgenomes of Brassica rapa".PLOS ONE 7.5(2012):-.