Duplication and DNA segmental loss in the rice genome: implications for diploidization

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	Duplication and DNA segmental loss in the rice genome: implications for diploidization
	Wang, XY; Shi, XL; Hao, BL; Ge, S; Luo, JC; Luo, JC , Peking Univ, Ctr Bioinformat, Natl Lab Plant Genet Engn & Prot Engn, Coll Life Sci, Beijing 100871, Peoples R China.
	2005
发表期刊	NEW PHYTOLOGIST
ISSN	0028-646X
卷号	165 期号:3 页码:937-946
摘要	Large-scale duplication events have been recently uncovered in the rice genome, but different interpretations were proposed regarding the extent of the duplications. Through analysing the 370 AAb genome sequences assembled into 12 chromosomes of Oryza sativa subspecies indica, we detected 10 duplicated blocks on all 12 chromosomes that contained 47% of the total predicted genes. Based on the phylogenetic analysis, we inferred that this was a result of a genome duplication that occurred c. 70 million years ago, supporting the polyploidy origin of the rice genome. In addition, a segmental duplication was also identified involving chromosomes 11 and 12, which occurred c. 5 million years ago. Following the duplications, there have been large-scale chromosomal rearrangements and deletions. About 30-65% of duplicated genes were lost shortly after the duplications, leading to a rapid diploidization. Together with other lines of evidence, we propose that polyploidzation is still an ongoing process in grasses of polyploidy origins.
部门归属	Peking Univ, Ctr Bioinformat, Natl Lab Plant Genet Engn & Prot Engn, Coll Life Sci, Beijing 100871, Peoples R China; Chinese Acad Sci, Ctr Gen & Bioinformat, Beijing Gen Inst, Beijing 101300, Peoples R China; Hebei Polytech Univ, Coll Math, Tangshan 063009, Hebei, Peoples R China; Chinese Acad Sci, Inst Bot, Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词	Phylogenetic Analysis Evolutionary History Draft Sequence Grass Genomes Maize Origin Polyploidy Japonica Cereals Genes
学科领域	Physics
URL	查看原文
收录类别	SCI
WOS记录号	WOS:000227229800029
引用统计	被引频次：215[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.itp.ac.cn/handle/311006/13866
专题	理论物理所SCI论文
通讯作者	Luo, JC , Peking Univ, Ctr Bioinformat, Natl Lab Plant Genet Engn & Prot Engn, Coll Life Sci, Beijing 100871, Peoples R China.
推荐引用方式 GB/T 7714	Wang, XY,Shi, XL,Hao, BL,et al. Duplication and DNA segmental loss in the rice genome: implications for diploidization[J]. NEW PHYTOLOGIST,2005,165(3):937-946.
APA	Wang, XY,Shi, XL,Hao, BL,Ge, S,Luo, JC,&Luo, JC , Peking Univ, Ctr Bioinformat, Natl Lab Plant Genet Engn & Prot Engn, Coll Life Sci, Beijing 100871, Peoples R China..(2005).Duplication and DNA segmental loss in the rice genome: implications for diploidization.NEW PHYTOLOGIST,165(3),937-946.
MLA	Wang, XY,et al."Duplication and DNA segmental loss in the rice genome: implications for diploidization".NEW PHYTOLOGIST 165.3(2005):937-946.

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