Knowledge Management System of Institute of Theoretical Physics, CAS
| 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. | |
| Duplication and DNA segmental loss in the rice genome: implications for diploidization | |
| Source Publication | NEW PHYTOLOGIST
 |
| Keyword | Phylogenetic Analysis Evolutionary History Draft Sequence Grass Genomes Maize Origin Polyploidy Japonica Cereals Genes |
| Abstract | 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. |
| 2005 | |
| ISSN | 0028-646X |
| Volume | 165Issue:3Pages:937-946 |
| Subject Area | Physics |
| Indexed By | SCI |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/13866 |
| Collection | SCI期刊论文 |
| Corresponding Author | Luo, JC , Peking Univ, Ctr Bioinformat, Natl Lab Plant Genet Engn & Prot Engn, Coll Life Sci, Beijing 100871, Peoples R China. |
| Recommended Citation 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. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Duplication and DNA （279KB） | 开放获取 | License | Application Full Text | |||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment