Research Article

A Draft Sequence of the Rice Genome (Oryza sativa L. ssp. indica)

Science  05 Apr 2002:
Vol. 296, Issue 5565, pp. 79-92
DOI: 10.1126/science.1068037

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Abstract

We have produced a draft sequence of the rice genome for the most widely cultivated subspecies in China, Oryza sativa L. ssp.indica, by whole-genome shotgun sequencing. The genome was 466 megabases in size, with an estimated 46,022 to 55,615 genes. Functional coverage in the assembled sequences was 92.0%. About 42.2% of the genome was in exact 20-nucleotide oligomer repeats, and most of the transposons were in the intergenic regions between genes. Although 80.6% of predicted Arabidopsis thaliana genes had a homolog in rice, only 49.4% of predicted rice genes had a homolog in A. thaliana. The large proportion of rice genes with no recognizable homologs is due to a gradient in the GC content of rice coding sequences.

  • * These authors contributed equally to this work.

  • To whom correspondence should be addressed. E-mail: hyang{at}genomics.org.cn.

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