stem rust
Americannoun
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any of several fungal diseases of plants affecting the stems, especially a disease of wheat and other grasses characterized by pustules of red and then black spores.
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any of the fungi causing such a disease.
Etymology
Origin of stem rust
First recorded in 1915–20
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The gene Sr33, an ortholog of barley Mla genes, encodes resistance to wheat stem rust race Ug99.
From Nature • Nov. 14, 2017
A fungal pathogen of wheat, a stem rust dubbed Ug99, evolved to infect wheat varieties once resistant to the fungus.
From Slate • Apr. 1, 2014
Scientists have engineered wheat that is resistant to stem rust, a fungal disease that has ruined crops in Africa, Yemen and Iran.
From BBC • Jun. 27, 2013
Science news writer Erik Stokstad profiles Nobel Peace Prize-winner Norman Borlaug, who developed resistant varieties of wheat that protected the world against stem rust for decades.
From Science Magazine • Dec. 23, 2010
Borlaug landed in the valley in the 1940s as an agricultural adviser for the Rockefeller Foundation while the farmers around him were beset by a fungus known as stem rust.
From Washington Post
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
