DNA Research Advance Access originally published online on April 23, 2007
DNA Research 2007 14(1):37-45; doi:10.1093/dnares/dsm005
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A Genome-wide Microsatellite Polymorphism Database for the Indica and Japonica Rice



1 James D. Watson Institute of Genome Science, Zhejiang University, Hangzhou 310008, China
2 Key Laboratory of Genome Sciences and Information, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing 101300, China
3 Institute of Computing Technology, Chinese Academy of Sciences, Beijing 101300, China
4 Institute of Bioinformation, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
5 Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China
6 Department of Agronomy, College of Agriculture and Biotechnology, Zhejiang University, Hangzhou 310029, China
Received 27 July 2006 ; revised 11 March 2007
Microsatellite (MS) polymorphism is an important source of genetic diversity, providing support for map-based cloning and molecular breeding. We have developed a new database that contains 52 845 polymorphic MS loci between indica and japonica, composed of ample Class II MS markers, and integrated 18 828 MS loci from IRGSP and genetic markers from RGP. Based on genetic marker positions on the rice genome (http://rise.genomics.org.cn/rice2/index.jsp ), we determined the approximate genetic distances of these MS loci and validated 100 randomly selected markers experimentally with 90% success rate. In addition, we recorded polymorphic MS positions in indica cv. 9311 that is the most important paternal parent of the two-line hybrid rice in China. Our database will undoubtedly facilitate the application of MS markers in genetic researches and marker-assisted breeding. The data set is freely available from www.wigs.zju.edu.cn/achievment/polySSR.
Key words: polymorphism; microsatellite or MS; database; whole-genome sequences; rice
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These authors contributed equally to this paper.