blister rust


blister rust
Plant Pathol.
a disease, esp. of white pines, characterized by cankers and in the spring by blisters on the stems, caused by a rust fungus of the genus Cronartium.
[1915-20]

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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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      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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Universalium. 2010.

Look at other dictionaries:

  • blister rust — ☆ blister rust n. a destructive disease of white pines, caused by a fungus (Cronartium ribicola) that produces orange colored blisters on the bark and branch tips …   English World dictionary

  • blister rust — noun 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 • Syn: ↑white pine rust, ↑white pine blister rust • Hypernyms: ↑rust 2 …   Useful english dictionary

  • blister rust — blis′ter rust n. ppa a disease, esp. of white pines, characterized by cankers and in the spring by blisters on the stems, caused by a rust fungus of the genus Cronartium[/ex] • Etymology: 1915–20 …   From formal English to slang

  • blister rust — noun Date: 1916 any of several diseases of pines that are caused by rust fungi (genus Cronartium) in the aecial stage and that affect the sapwood and inner bark and produce blisters externally …   New Collegiate Dictionary

  • white pine blister rust — noun 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 • Syn: ↑blister rust, ↑white pine rust • Hypernyms: ↑rust * * * noun also… …   Useful english dictionary

  • white-pine blister rust — noun Date: 1911 a destructive disease of white pine caused by a rust fungus (Cronartium ribicola) that passes part of its complex life cycle on currant or gooseberry bushes; also this fungus …   New Collegiate Dictionary

  • rust fungus — noun any of various fungi causing rust disease in plants • Syn: ↑rust • Hypernyms: ↑fungus • Hyponyms: ↑flax rust, ↑flax rust fungus, ↑Melampsora lini, ↑ …   Useful english dictionary

  • blister blight — noun 1. a disease of Scotch pines • Hypernyms: ↑blight 2. a disease of tea plants • Hypernyms: ↑blight * * * noun 1. : a blister disease affecting the leaves of the tea plant caused by a fungus (Exobasidium vexans) 2 …   Useful english dictionary

  • white-pine rust — noun 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 • Syn: ↑blister rust, ↑white pine blister rust • Hypernyms: ↑rust * * *… …   Useful english dictionary

  • felt rust — noun : the telia of a rust (Cronartium ribicola) on currants and gooseberries compare white pine blister rust …   Useful english dictionary


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