HOME >> BIOLOGY >> NEWS
Rice genome approaches completion

A large group of scientists led by the Beijing Institute of Genomics has published in the freely-available online journal PLoS Biology a much improved, near-complete genome analysis of the indica and japonica subspecies of Oryza sativa, which are eaten in India and China, and Japan, respectively. The analysis team, led by Gane Ka-Shu Wong, provides important insights into the evolution of rice.

The key to the improvement in the genome sequence analysis is that the researchers have used the combined DNA sequence data from the two subspecies to facilitate the sequence assembly. The result is a nearly 1,000-fold increase in contiguity for the two genome sequences relative to the existing sequence data.

The researchers have used their improved genome sequence to investigate the evolutionary history of rice. Central to evolution is the development of new functions through mutation of existing genes. But when mutations occur in functional genes, the result is rarely beneficial, so it is thought that evolution is more likely to proceed first by duplicating existing genes and then experimenting on the "backup" copy of the gene.

Wong and colleagues report that there is evidence in the rice DNA sequences for a whole-genome duplication event just before the grasses diverged from other flowering plants, about 5570 million years ago. This genome duplication may have played a role in the origin of the grasses, which then spread rapidly across the world to provide important sources of food that, among other things, possibly influenced human evolution.

Analysis of the rice genomes also indicates that there is massive ongoing duplication of individual genes. These individual gene duplications provide a continuous source of raw material for gene genesis and very likely contribute to the differences between members of the grass family. Now the challenge is to use the rice sequences as a basis for detailed genetic analyse
'"/>

Contact: Paul Ocampo
pocampo@plos.org
415-624-1224
Public Library of Science
31-Jan-2005


Page: 1 2

Related biology news :

1. Unravelling new complexity in the genome
2. One species, many genomes
3. First genome-wide study of infectious disease opens new avenues for HIV treatment, vaccines
4. Charting ever-changing genomes
5. Neutral evolution has helped shape our genome
6. Sea anemone genome provides new view of our multi-celled ancestors
7. Cloning the male genome may help infertile men
8. Mutating the entire genome
9. Exploring the dark matter of the genome
10. New findings challenge established views on human genome
11. ENCODE map changes view of the human genome landscape

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Rice genome approaches completion

(Date:4/17/2014)... a word for chili peppers. Information about archaeological remains ... study of the appearance of words for chili peppers ... were domesticated and highlight the value of multi-proxy data ... al.) of nine papers presented in a special feature ... of Sciences on plant and animal domestication edited ...
(Date:4/17/2014)... Luca Razzari of the nergie Matriaux Tlcommunications Research ... the John R. Evans Leaders Fund of the ... of state-of-the-art biotech and nanophotonics equipment. To this ... Ministre de l,Enseignement suprieur, de la Recherche, de ... new laboratories will help us develop new approaches ...
(Date:4/17/2014)... University engineer has developed a patented technique that ... devices. The same technique could help police during ... and Kay L. Theede chair in engineering and ... his research team have created a template-based system ... trunks. The distance detection method called stand-off ...
Breaking Biology News(10 mins):Chickens to chili peppers 2Chickens to chili peppers 3New state-of-the-art biotech and nanotech equipment for INRS 2Patented research remotely detects nitrogen-rich explosives 2
(Date:1/14/2014)... 2014 iLab Solutions, the leader in core ... Director of Product Strategy. In this role, Michelle will work ... to guide in the development of iLab products. Her main ... possible benefit to the scientific community by offering the most ...
(Date:1/14/2014)... Mass. , Jan. 14, 2014  RXi Pharmaceuticals ... discovering, developing and commercializing innovative therapies addressing major ... that it received the Notice of Allowance from ... its unique self-delivering RNAi compounds (sd-rxRNA®), for the ...
(Date:1/14/2014)... , Jan. 14, 2014   Kinaxis ®, provider of ... ) and sales and operations planning ( S&OP ) service, ... Biomanufacturing Summit , which will be held at the Hilton ... conference, join Kinaxis customer Elisabeth Kaszas , Director of ...
(Date:1/14/2014)... January 14, 2014 Kerr Corporation, a leading ... and additional how-to information about dual arch impressions on its ... Dual Arch Impressions,” the blog entry serves up a list ... houses a step-by-step demonstration by Dr. David Little as he ...
Breaking Biology Technology:iLab Solutions Announces Michelle Detwiler as the New Director of Product Strategy 2RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 2RXi Pharmaceuticals Receives US Notice of Allowance for a Key Patent Relating to its Self-Delivering Technology with sd-rxRNAs targeting CTGF, including RXI-109, for the Treatment of Fibrotic Disorders 3Event Alert: Kinaxis Customer to Present at the Biomanufacturing Summit "Supply Chain: Improving Network Effectiveness" 2
Cached News: