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	Duplication and DNA segmental loss in the rice genome: implications for diploidization
	Hao, BL; Luo, JC; Luo, JC , Peking Univ, Ctr Bioinformat, Natl Lab Plant Genet Engn & Prot Engn, Coll Life Sci, Beijing 100871, Peoples R China.; Ge, S; Wang, XY; Shi, XL
刊名	NEW PHYTOLOGIST
	2005
卷号	165期号:3页码:937-946
关键词	Phylogenetic Analysis Evolutionary History Draft Sequence Grass Genomes Maize Origin Polyploidy Japonica Cereals Genes
ISSN号	0028-646X
英文摘要	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.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000227229800029
公开日期	2012-08-30
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/13866]
专题	理论物理研究所_理论物理所1978-2010年知识产出
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	Hao, BL,Luo, JC,Luo, JC , Peking Univ, Ctr Bioinformat, Natl Lab Plant Genet Engn & Prot Engn, Coll Life Sci, Beijing 100871, Peoples R China.,et al. Duplication and DNA segmental loss in the rice genome: implications for diploidization[J]. NEW PHYTOLOGIST,2005,165(3):937-946.
APA	Hao, BL,Luo, JC,Luo, JC , Peking Univ, Ctr Bioinformat, Natl Lab Plant Genet Engn & Prot Engn, Coll Life Sci, Beijing 100871, Peoples R China.,Ge, S,Wang, XY,&Shi, XL.(2005).Duplication and DNA segmental loss in the rice genome: implications for diploidization.NEW PHYTOLOGIST,165(3),937-946.
MLA	Hao, BL,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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