Two Draft Sequences of Rice Genome Published on April 5, 2002, Japonica, Inidica, Torrey Mesa Research Institute, syngenta, Genome

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Home >> Plant Biotechnology and Genomics >>Whole Genome Sequencing and Functional Genomics >> Two Draft Sequences of Rice Genome Published

Two draft sequences of rice genome published
On April 5, 2002, two draft sequences of rice genome, one for each of the two major subspecies of rice (japonica and indica) were published in American journal, Science. However, in both draft sequences, there are gaps to be filled and there may also be errors, which need to be rectified. The genome sequence for the japonicarice was worked out by a Switzerland based private company,

Syngenta (Torrey Mesa Research Institute or TMRI), so that it is proprietary in nature and has not been deposited in GeneBank. However this genome sequence will be available to scientific community on terms identical to those allowed for Celera's human genome sequence published on April 16, 2001 in the same journal.

In contrast to this, the genomic sequence of indicarice has been worked out by Beijing Genomics Institute (BGI) and has been deposited at GenBank to be freely available to every body.

It is believed that the above draft sequences of the rice genome will provide insights into the genomes of other cereals including maize, barley and wheat. IRGSP will also utilize these draft sequences to provide a much higher quality draft sequence of the Nipponbare cultivar of japonica rice by the end of 2002. The finished high quality rice genome sequence will, however, become available not before the end of the year 2003.

Japonica and indica draft rice plants, whose draft genome sequences

It should also be recognized that while Monsanto, Syngenta and BGI used the whole genome shotgun (WGS) sequencing approach to expedite genome sequencing, IRGSP is sequencing the rice genome by using 'clone by clone' approach or 'clone first-sequence later' approach of sequencing to provide high quality genome sequence with fewer gaps and fewer errors.

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