Featured Research

from universities, journals, and other organizations

Wheat Stem Rust: Heading Off World Wheat Threat

Date:
November 28, 2007
Source:
US Department of Agriculture
Summary:
Scientists are counting on a "southern strategy" to protect the entire United States from Ug99, a strain of wheat stem rust disease that has spread from Africa to the Arabian Peninsula. The fungal strain was named for its discovery in Uganda in 1999.

Close-up of stem rust on wheat.
Credit: Photo by Cereal Disease Lab, USDA

Wheat breeders and Agricultural Research Service (ARS) scientists are counting on a "southern strategy" to protect the entire United States from Ug99, a strain of wheat stem rust disease that has spread from Africa to the Arabian Peninsula.

The fungal strain was named for its discovery in Uganda in 1999.

The disease spreads by wind-blown fungal spores. Planting highly resistant wheat varieties in the southern United States where stem rust fungus can survive winter could prevent the disease from taking hold in the South and then spreading to the rest of the country.

Ug99 has overcome most of the stem rust resistance genes bred into wheat varieties during the past several decades. Last year, ARS Cereal Disease Laboratory (CDL) plant pathologist Yue Jin confirmed a new, even more virulent variant of Ug99 in Kenya. His colleague, geneticist Les Szabo, also at the CDL in St. Paul, Minn., leads the stem rust genome project.

The CDL is the nation's primary facility for identifying various forms of stem rust and other cereal rusts, such as wheat leaf rust and oat crown rust.

Jin and Szabo are part of a team of ARS scientists in laboratories across the United States working with breeders to put resistance genes into wheat and barley varieties. They rely particularly on four ARS regional small-grains genotyping laboratories for their capacity to search for breeder-friendly DNA markers for locating resistance genes.

Nationally, ARS scientists and university cooperators have planted susceptible and resistant wheat varieties at various locations around the country to watch for new rust strains.

Internationally, ARS provided funds and expertise to the Global Rust Initiative formed in 2005 by two international organizations to fight the new strain of the disease.


Story Source:

The above story is based on materials provided by US Department of Agriculture. Note: Materials may be edited for content and length.


Cite This Page:

US Department of Agriculture. "Wheat Stem Rust: Heading Off World Wheat Threat." ScienceDaily. ScienceDaily, 28 November 2007. <www.sciencedaily.com/releases/2007/11/071126151723.htm>.
US Department of Agriculture. (2007, November 28). Wheat Stem Rust: Heading Off World Wheat Threat. ScienceDaily. Retrieved July 25, 2014 from www.sciencedaily.com/releases/2007/11/071126151723.htm
US Department of Agriculture. "Wheat Stem Rust: Heading Off World Wheat Threat." ScienceDaily. www.sciencedaily.com/releases/2007/11/071126151723.htm (accessed July 25, 2014).

Share This




More Plants & Animals News

Friday, July 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Boy Attacked by Shark in Florida

Boy Attacked by Shark in Florida

Reuters - US Online Video (July 24, 2014) An 8-year-old boy is bitten in the leg by a shark while vacationing at a Florida beach. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Goma Cheese Brings Whiff of New Hope to DRC

Goma Cheese Brings Whiff of New Hope to DRC

Reuters - Business Video Online (July 24, 2014) The eastern region of the Democratic Republic of Congo, mainly known for conflict and instability, is an unlikely place for the production of fine cheese. But a farm in the village of Masisi, in North Kivu is slowly transforming perceptions of the area. Known simply as Goma cheese, the Congolese version of Dutch gouda has gained popularity through out the region. Ciara Sutton reports. Video provided by Reuters
Powered by NewsLook.com
Tyrannosaur Pack-Hunting Theory Aided By New Footprints

Tyrannosaur Pack-Hunting Theory Aided By New Footprints

Newsy (July 24, 2014) A new study claims a set of prehistoric T-Rex footprints supports the theory that the giant predators hunted in packs instead of alone. Video provided by Newsy
Powered by NewsLook.com
Bill Gates: Health, Agriculture Key to Africa's Development

Bill Gates: Health, Agriculture Key to Africa's Development

AFP (July 24, 2014) Health and agriculture development are key if African countries are to overcome poverty and grow, US software billionaire Bill Gates said Thursday, as he received an honourary degree in Ethiopia. Duration: 00:36 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

    Health News

      Environment News

        Technology News



          Save/Print:
          Share:

          Free Subscriptions


          Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

          Get Social & Mobile


          Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

          Have Feedback?


          Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
          Mobile: iPhone Android Web
          Follow: Facebook Twitter Google+
          Subscribe: RSS Feeds Email Newsletters
          Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins