stem rust


: a rust attacking the stem of a plant
especially : a destructive disease especially of wheat caused by a rust fungus (Puccinia graminis) which produces reddish-brown lesions in the uredospore stage and black lesions in the teliospore stage and has any of several plants of the barberry family as an intermediate host
: the fungus causing stem rust

Examples of stem rust in a Sentence

Recent Examples on the Web Wheat stem rust infection, for instance, is a pathogen normally seen in tropical countries such as Ethiopia, but for years has been observed in high-latitude areas including the U.K. and Scandinavian countries. Tristan Bove, Fortune, 4 May 2023 Researchers have already discovered two new genes that help wheat resist a strain of wheat stem rust, a blight that overruns wheat. Discover Magazine, 2 May 2018 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. Washington Post, 22 Dec. 2021

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'stem rust.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1899, in the meaning defined at sense 1

Time Traveler
The first known use of stem rust was in 1899

Dictionary Entries Near stem rust

Cite this Entry

“Stem rust.” Dictionary, Merriam-Webster, Accessed 19 May. 2024.

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