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 September 2, 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 September 2, 2014).

Share This




More Plants & Animals News

Tuesday, September 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

We've Got Mites Living In Our Faces And So Do You

We've Got Mites Living In Our Faces And So Do You

Newsy (Aug. 30, 2014) A new study suggests 100 percent of adult humans (those over 18 years of age) have Demodex mites living in their faces. Video provided by Newsy
Powered by NewsLook.com
Washington Wildlife Center Goes Nuts Over Baby Squirrels

Washington Wildlife Center Goes Nuts Over Baby Squirrels

Reuters - US Online Video (Aug. 30, 2014) An animal rescue in Washington state receives an influx of orphaned squirrels, keeping workers busy as they nurse them back to health. Rough Cut (no reporter narration). Video provided by Reuters
Powered by NewsLook.com
Experimental Ebola Drug ZMapp Cures Lab Monkeys Of Disease

Experimental Ebola Drug ZMapp Cures Lab Monkeys Of Disease

Newsy (Aug. 29, 2014) In a new study, a promising experimental treatment for Ebola managed to cure a group of infected macaque monkeys. Video provided by Newsy
Powered by NewsLook.com
Killer Amoeba Found in Louisiana Water System

Killer Amoeba Found in Louisiana Water System

AP (Aug. 28, 2014) State health officials say testing has confirmed the presence of a killer amoeba in a water system serving three St. John the Baptist Parish towns. (Aug. 28) Video provided by AP
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