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ZJUS-B
Journal of Zhejiang University-SCIENCE B (Biomedicine & Biotechnology)  2005, Vol. 6 Issue ( 2): 3-    DOI: 10.1631/jzus.2005.B0087
    
Two ancient rounds of polyploidy in rice genome
ZHANG Yang, XU Guo-hua, GUO Xing-yi, FAN Long-jiang
Institute of Bioinformatics/ZJU-IBM Biocomputational Lab, Zhejiang University, Hangzhou 310029, China; Institute of Crop Science, Zhejiang University, Hangzhou 310029, China
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Abstract  An ancient genome duplication (PPP1) that predates divergence of the cereals has recently been recognized. We report here another potentially older large-scale duplication (PPP2) event that predates monocot-dicot divergence in the genome of rice (Oryza sativa L.), as inferred from the age distribution of pairs of duplicate genes based on recent genome data for rice. Our results suggest that paleopolyploidy was widespread and played an important role in the evolution of rice.

Key words： Bioinformatics Biocomputational Crop Oryza sativa      Polyploidy      Genome evolution      Age distribution of duplicate genes      Monocot-dicot divergence     
Received: 27 October 2004     
CLC:  Q78  
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ZHANG Yang
XU Guo-hua
GUO Xing-yi
FAN Long-jiang
Cite this article:

ZHANG Yang, XU Guo-hua, GUO Xing-yi, FAN Long-jiang. Two ancient rounds of polyploidy in rice genome. Journal of Zhejiang University-SCIENCE B (Biomedicine & Biotechnology), 2005, 6( 2): 3-.

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http://www.zjujournals.com/xueshu/zjus-b/10.1631/jzus.2005.B0087     OR     http://www.zjujournals.com/xueshu/zjus-b/Y2005/V6/I 2/3

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