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USDA scientists and cooperators sequence the wheat genome in breakthrough for global food security
Date:11/28/2012

er donors, multilateral institutions, and government and non-government entities at the country level to effectively improve agricultural productivity, reduce food insecurity and generate economic opportunity.

Grown on more land area than any other commercial crop, wheat is the world's most important staple food, and its improvement has vast implications for global food security. The work to complete the shotgun sequencing of the wheat genome will help to improve programs on breeding and adaptation in Asia and Sub-Saharan Africa for wheat crops that could be drought tolerant and resistant to weeds, pests and diseases.

ARS is one of nine institutions with researchers who contributed to the study. The lead authors are based in the United Kingdom and were funded by the British-based Biotechnology and Biological Sciences Research Council. Funding also was provided by USDA's National Institute of Food and Agriculture (NIFA). NIFA focuses on investing in research, education and extension programs to help solve critical issues impacting people's daily lives.

The study represents the most detailed examination to date of the DNA that makes up the wheat genome, a crop domesticated thousands of years ago. The wheat genome is five times the size of the human genome, giving it a complexity that makes it difficult to study. The researchers used the whole genome shotgun sequencing approach, which essentially breaks up the genome into smaller, more workable segments for analysis and then pieces them together.

Another international team of scientists is working on a long-term project expected to result in more detailed sequencing results of the wheat genome in the years ahead. But the results published today shed light on wheat's DNA in a way that will help breeders develop hardier varieties by linking genes to key traits, such as disease resistance and drought tolerance.

Wheat evolved from three ancient grasses, and the ARS team, work
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Contact: Dennis O'Brien
dennis.obrien@ars.usda.gov
301-504-1624
United States Department of Agriculture - Research, Education and Economics
Source:Eurekalert

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