blister rust

American  

noun

Plant Pathology.

1. a disease, especially of white pines, characterized by cankers and in the spring by blisters on the stems, caused by a rust fungus of the genus Cronartium.

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blister rust British  

noun

1. a disease of certain pines caused by rust fungi of the genus Cronartium , causing swellings on the bark from which orange masses of spores are released

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Etymology

Origin of blister rust

First recorded in 1915–20

Example Sentences

See Examples For:

blister rust

A nonnative fungus — white pine blister rust — has been killing whitebark pines for a century and they’ve been largely wiped out in areas.

From Seattle Times ● Dec. 14, 2022

“We know how to find genetic resistance to white pine blister rust and there’s a number of whitebark pine trees that have it. They will be the foundation of a planting strategy,” she said.

From Washington Times ● Dec. 14, 2022

But, in 1911, the federal government banned black currants, which carried white pine blister rust, a fungus that infected white pines and presented a threat to the timber industry.

From New York Times ● Mar. 11, 2022

Adding to their advantages, about one-quarter of the trees Maloney is planting carry a gene resistant to white pine blister rust, a much higher rate than occurs naturally.

From Los Angeles Times ● Nov. 18, 2019

Enemies: Sucking insects forming white downy patches on the bark and twigs, the white pine weevil, a boring insect, and the white pine blister rust, a fungus, are among its principal enemies.

From Studies of Trees by Levison, Jacob Joshua