stem rust


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Related to stem rust: leaf rust

stem rust

[′stem ‚rəst]
(plant pathology)
Any of several fungus diseases, especially of grasses, affecting the stem and marked by black or reddish-brown lesions.
References in periodicals archive ?
US collaborators Professor Melania Figueroa, Professor Brian Steffenson and Dr Yue Jin were able to extend the results of the study by examining strains of the stem rust pathogen from other parts of the world, including the US and Africa.
Dr Ruth Wanyera, Karlo principal research scientist and plant pathologist at the Njoro Food Crop Centre, says Ug99 is a strain of stem rust that attacks a gene in the wheat variety that is grown globally.
The rpg4-mediated resistance to wheat stem rust (Puccinia graminis) in barley (Hordeum vulgare) requires Rpg5, a second NBS-LRR gene, and an actin depolymerization factor.
Comparison of diferent methods for extraction of DNA of wheat stem rust urediospores.
In the 1950s, the United States eradicated more than 99 percent of its Barbary bushes as one step in drastically curbing major outbreaks of stem rust.
The grant will allow Cornell to build on international efforts to combat many varieties of stem rust, but particularly Ug99 and its variants.
Throughout history, periodic stem rust infestations have devastated wheat crops, bringing famine.
in Uganda during 1999] transformed stem rust from a disease largely under control into a significant global threat," said David Hodson, the FAO's international focal point officer for wheat rust disease.
Wheat fungus threatens world's harvests: Crop specialists are working to slow the spread of stem rust disease, a deadly airborne fungus that has the potential to devastate between 80 and 90 percent of the world's wheat.
In 1916, an epidemic of wheat stem rust devastated the West.
According to Science Development magazine the new form of stem rust has spread from Ethiopia, Kenya and Uganda over the Red Sea to Yemen.
Evaluation of Langdon durum-Aegilops tauschii synthetic hexaploid wheats for reaction to tan spot, Stagonospora leaf blotch, leaf rust, stem rust, and Hessian fly.