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POPSWheat Killer Detected In Iran Nov. 28, 2007) — 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. Heading Off World Wheat Threat 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. http://www.sciencedaily.com/releases/2007/11/071126151723.htm
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