Skip Navigation



MBE Advance Access published online on February 23, 2008
Molecular Biology and Evolution, doi:10.1093/molbev/msn052
This Article
Right arrow Advance Access manuscript (PDF) Freely available
Right arrow Supplementary Data
Right arrow All Versions of this Article:
25/6/1003    most recent
msn052v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Wu, Y.
Right arrow Articles by Chen, M.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Wu, Y.
Right arrow Articles by Chen, M.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© The Author 2008. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution. All rights reserved. For permissions, please e-mail: journals.permissions@oxfordjournals.org

Letter

The Preferential Retention of Starch Synthesis Genes Reveals the Impact of Whole Genome Duplication on Grass Evolution

Yufeng Wu*, Zhengge Zhu{dagger}, Ligeng Ma{ddagger} and Mingsheng Chen*

* State Key Laboratory of Plant Genomics, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
{dagger} College of Biology, Hebei Normal University, Shijiazhuang, Hebei 050016
{ddagger} National Institute of Biological Sciences, Beijing 102206, China

Corresponding author: Mingsheng Chen, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Datun Road, Chaoyang District, Beijing 100101, China, Phone: 8610-64837087, Fax: 8610-64873428, E-mail: mschen{at}genetics.ac.cn

Received for publication January 27, 2008. Accepted for publication February 15, 2008.

Gene duplication is a major force in evolution. Here, we analyzed the fate of duplicated genes following the ancient whole genome duplication (WGD) in rice. Polyploidy-derived duplicated genes were found to be preferentially lost from one of each pair of duplicated chromosomal segments, suggesting the asymmetric gene loss may result from transcriptome dominance of the ancestral allotetraploid genome. Genes involved in synthesis and catabolism of saccharides were found to be preferentially retained in rice, reflecting different trajectories of duplicated genes formed by polyploidy between rice and Arabidopsis. Further studies demonstrated all three catalyzing steps in the starch biosynthesis pathway have polyploidy-derived duplicated genes and one copy in each step forms a dominant pathway in the grain filling-stage rice. The new starch biosynthesis pathway reflects one aspect of the impact of WGD on grass evolution

Key Words: genome duplication • genome evolution • comparative genomics


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 J Exp BotHome page
O. Ahrazem, A. Rubio-Moraga, R. C. Lopez, and L. Gomez-Gomez
The expression of a chromoplast-specific lycopene beta cyclase gene is involved in the high production of saffron's apocarotenoid precursors
J. Exp. Bot., September 18, 2009; (2009) erp283v1.
[Abstract] [Full Text] [PDF]

Home page
 J Exp BotHome page
S. Comparot-Moss and K. Denyer
The evolution of the starch biosynthetic pathway in cereals and other grasses
J. Exp. Bot., July 1, 2009; 60(9): 2481 - 2492.
[Abstract] [Full Text] [PDF]

Home page
 Mol PlantHome page
J.-H. Xu and J. Messing
Diverged Copies of the Seed Regulatory Opaque-2 Gene by a Segmental Duplication in the Progenitor Genome of Rice, Sorghum, and Maize
Mol Plant, September 1, 2008; 1(5): 760 - 769.
[Abstract] [Full Text] [PDF]


Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.