Navigation Links
UC Davis researchers aid effort to sequence the complex wheat genome
Date:11/28/2012

Intent on developing wheat varieties with higher yields and enhanced nutritional content, researchers at the University of California, Davis, have teamed up with scientists at nine other institutions in an attempt to sequence the wheat genome.

Results from that endeavor, led by researchers at the U.K.-based Biotechnology and Biological Sciences Research Council, will be reported Nov. 29 in the journal Nature.

"This work moves us one step closer to a comprehensive and highly detailed genome sequence for bread wheat, which along with rice and maize is one of the three pillars on which the global food supply rests," said Jan Dvorak, professor of plant sciences at UC Davis and a study co-author.

"The world's population is projected to grow from 7 billion to 9 billion by 2050," he said. "It is clear that, with no new farmable land available to bring into cultivation, we must develop higher-yielding varieties of these three cereals to meet the growing global demand for food."

The bread wheat genome is especially complex because bread wheat originated from three ancient grass species. Its genome is, therefore, a composite of three genomes and is five times the size of the human genome.

Wheat geneticists have historically designated the genomes of those parent grasses as the A, B and D genomes, each containing a similar set of genes. As a result, most bread wheat genes exist in triplicate.

To aid the sequence assembly of bread wheat, Dvorak and the UC Davis researchers have worked with scientists at the U.S. Department of Agriculture's Agricultural Research Service and with scientists at two other U.S. institutions on sequencing of the genome of the parent species Aegilops tauschii the source of the bread wheat D genome.

The U.S. team shared the Aegilops tauschii sequences with the British team, which was assembling all three of the wheat A, B and D genomes.

Comparing the Aegilops tauschii sequence with modern wheat allows researchers to assess genomic changes that have taken place in bread wheat since its origin approximately 8,000 years ago.

In the study reported in Nature, the researchers used the whole genome "shotgun sequencing" approach, which generates billions of random genome sequence "reads" and then pieces them together. The results provide information about the DNA making up wheat genes that will help wheat breeders develop hardier varieties by linking genes to key traits, such as disease resistance and drought tolerance.

"This sequencing effort has yielded important information that will accelerate wheat genetics and breeding and help us better understand wheat evolution," Dvorak said. "It cannot be overemphasized, however, that this is just one step in the global effort to produce a high-quality draft of the bread wheat genome sequence."

He said completion of such a high-quality genome sequence for bread wheat is still a few years away and will require broad international collaboration to complete.


'/>"/>

Contact: Patricia Bailey
pjbailey@ucdavis.edu
530-752-9843
University of California - Davis
Source:Eurekalert

Related biology news :

1. UC Davis scientists find new role for P53 genetic mutation -- initiation of prostate cancer
2. UC Davis study finds that above-normal weight alone does not increase the short-term risk of death
3. UC Davis researchers develop new drug delivery system for bladder cancer using nanoparticles
4. Study by UC Santa Barbara researchers suggests that bacteria communicate by touch
5. UC Santa Barbara researchers discover genetic link between visual pathways of hydras and humans
6. Researchers attempt to solve problems of antibiotic resistance and bee deaths in one
7. UNH researchers find African farmers need better climate change data to improve farming practices
8. Ottawa researchers to lead world-first clinical trial of stem cell therapy for septic shock
9. Researchers uncover molecular pathway through which common yeast becomes fungal pathogen
10. Researchers print live cells with a standard inkjet printer
11. Columbia Engineering and Penn researchers increase speed of single-molecule measurements
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/6/2016)... Securus Technologies, a leading provider of ... safety, investigation, corrections and monitoring, and the Prison ... (5) year funding commitment by Securus to PEP ... and reentry support to more inmates and their ... the Prison Entrepreneurship Program (PEP) is an independent ...
(Date:12/2/2016)...   SoftServe , a global digital technology ... electrocardiogram (ECG) biosensor analysis system for continuous driver ... The smart system ensures device-to-device communication between ECG ... mobile devices to easily ,recognize, and monitor users ... technology advances, so too must the security systems ...
(Date:11/29/2016)... Nov. 29, 2016 BioDirection, a privately held ... for the objective detection of concussion and other traumatic ... successfully completed a meeting with the U.S. Food and ... test Pre-Submission Package. During the meeting company representatives reviewed ... a precursor to commencement of a planned pilot trial. ...
Breaking Biology News(10 mins):
(Date:12/7/2016)... PA (PRWEB) , ... December 07, 2016 , ... ... website, http://www.autoreactors.com and online shopping cart. The new website has been ... functionality. These essential digital components allow customers to access detailed product information, read ...
(Date:12/6/2016)... ... December 06, 2016 , ... ... privately-held contract pharmaceutical development and manufacturing organisation, today announced the formation ... combining a leading CRO and the industry’s only Contract Commercial Organization (CCO). ...
(Date:12/6/2016)... (PRWEB) , ... December 06, ... ... a Great Point Partners ("GPP") portfolio company, today announced it has acquired ... previously a subsidiary of Chiltern International and focuses on clinical trial drug ...
(Date:12/6/2016)... , Dec. 6, 2016  The Texas ... Society of Australia (HISA) today announced the establishment ... exchange program between Australia and ... the world. HISA and the Texas ... a program to create a global health innovation ecosystem ...
Breaking Biology Technology: