Abstract
The rice species Oryza sativa is considered to be a model plant because of its small genome size, extensive genetic map, relative ease of transformation and synteny with other cereal crops1-4. Here we report the essentially complete sequence of chromosome 1, the longest chromosome in the rice genome. We summarize characteristics of the chromosome structure and the biological insight gained from the sequence. The analysis of 43.3 megabases (Mb) of non-overlapping sequence reveals 6,756 protein coding genes, of which 3,161 show homology to proteins of Arabidopsis thaliana, another model plant. About 30% (2,073) of the genes have been functionally categorized. Rice chromosome 1 is (G + C)-rich, especially in its coding regions, and is characterized by several gene families that are dispersed or arranged in tandem repeats. Comparison with a draft sequences5 indicates the importance of a high-quality finished sequence.
Original language | English (US) |
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Pages (from-to) | 312-316 |
Number of pages | 5 |
Journal | NATURE |
Volume | 420 |
Issue number | 6913 |
DOIs | |
State | Published - Nov 21 2002 |
Externally published | Yes |
Bibliographical note
Funding Information:Acknowledgements We thank M. Ramos for help in preparing the manuscript; and R. Prum for critical comments on the manuscript. Figure 1b is modified from ref. 1. This work is supported by grants from the National Institute of Arthritis and Musculoskeletal and Skin Diseases, USA, and the National Science Foundation to C.-M.C., and a National Cancer Institute grant to R.B.W.
ASJC Scopus subject areas
- General