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17 April 2014 12:48 pm ,
Vol. 344 ,
Officials last week revealed that the U.S. contribution to ITER could cost $3.9 billion by 2034—roughly four times the...
An experimental hepatitis B drug that looked safe in animal trials tragically killed five of 15 patients in 1993. Now,...
Using the two high-quality genomes that exist for Neandertals and Denisovans, researchers find clues to gene activity...
A new report from the Intergovernmental Panel on Climate Change (IPCC) concludes that humanity has done little to slow...
Astronomers have discovered an Earth-sized planet in the habitable zone of a red dwarf—a star cooler than the sun—500...
Three years ago, Jennifer Francis of Rutgers University proposed that a warming Arctic was altering the behavior of the...
- 17 April 2014 12:48 pm , Vol. 344 , #6181
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Rice Genome Drafts Announced
4 April 2002 (All day)
BEIJING, TOKYO, AND WASHINGTON, D.C.--Two groups published their versions of the genome of rice today. One sequence comes from the rice consumed in China and most of Asia (the indica subspecies); the other is derived from the rice eaten in Japan and in temperate countries (the japonica subspecies). Heralded as a landmark achievement for agricultural sciences, these two efforts come from groups who are relative late-comers to rice sequencing. Yet they have pulled ahead of an international rice genome consortium.
Currently, the genome of just one plant, a laboratory favorite called Arabidopsis, has been fully sequenced. But during the past decade, researchers have become ever more interested in sequencing rice--in part because it is a staple food for half the world's population and in part because it can help plant scientists find genes in other cereals with larger genomes. The rice genome is about 4 times the size of the Arabidopsis genome, but many times smaller than the genomes of either maize or wheat.
In the 5 April issue of Science, Yang Huanming of the Beijing Genomics Institute (BGI) and colleagues describe a draft sequence of the indica subspecies, and Steven Goff from the Switzerland-based agrobiotechnology giant Syngenta and his team report a similar achievement for japonica. Both were able to complete these versions at lightning speeds because they used a sequencing method called whole-genome shotgun. In this approach, all the DNA is cut into small bits that are sequenced and then pieced together with supercomputers.