blister rust

Dictionary: blister rust

Any of several diseases of pine trees caused by certain fungi of the genus Cronartium, resulting in conspicuous blistering and often dieback of affected areas.

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Britannica Concise Encyclopedia: blister rust

Any of several diseases of pines, caused by rust fungi (see fungus) of the genus Cronartium. Blister rust affects sapwood (see wood) and inner bark and produces external blisters from which additional spores of the fungus are released and resin oozes, forming characteristic hardened masses on the trunk. It affects pines of all ages and sizes, retarding growth and weakening stems as it spreads along the trunk, sometimes killing the tree; young trees are killed more quickly than older ones. Measures taken to fight blister rust include growing resistant varieties, destroying nearby alternative host plants, observing strict sanitation measures, and spraying with fungicides.

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WordNet: blister rust

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Note: click on a word meaning below to see its connections and related words.

The noun has 2 meanings:

Meaning #1: any of several diseases of pines caused by rust fungi of the genus Cronartium and marked by destructive invasion of bark and sapwood and producing blisters externally
Synonyms: white-pine rust, white pine blister rust

Meaning #2: fungus causing white pine blister rust and having a complex life cycle requiring a plant of genus Ribes as alternate host
Synonym: Cronartium ribicola

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	Cronartium ribicola (mycology)
	currant (plant, fruit)
	rust (in botany)

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		Dictionary. The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2007. Published by Houghton Mifflin Company. All rights reserved. Read more
		Britannica Concise Encyclopedia. Britannica Concise Encyclopedia. © 2006 Encyclopædia Britannica, Inc. All rights reserved. Read more
		WordNet. WordNet 1.7.1 Copyright © 2001 by Princeton University. All rights reserved. Read more