apple rust

apple rust
rust fungus causing rust spots on apples and pears etc
Hypernyms: ↑rust, ↑rust fungus
Member Holonyms: ↑Gymnosporangium, ↑genus Gymnosporangium

* * *

1. : any of several diseases caused by fungi of the genus Gymnosporangium; especially : a destructive fungous disease especially of the apple but also attacking pears and quinces that is caused by a rust (G. juniperi-virginianae) having its pycnial and aecial stages on the leaves and fruit of the apple and the telial stage on species of Juniperus, especially a common red cedar (J. virginiana)
2. : the fungus causing apple rust — called also cedar apple rust, cedar rust; compare cedar apple

Useful english dictionary. 2012.

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Look at other dictionaries:

  • cedar-apple rust — noun rust fungus causing rust spots on apples and pears etc • Syn: ↑apple rust, ↑Gymnosporangium juniperi virginianae • Hypernyms: ↑rust, ↑rust fungus • Member Holonyms: ↑Gymnosporangium, ↑ …   Useful english dictionary

  • cedar apple rust — noun see apple rust …   Useful english dictionary

  • cedar-apple rust — ▪ plant disease  common disease in North America of red cedar (Juniperus virginiana (eastern red cedar)), related Juniperus (juniper) species, apple, and crab apple, caused by the fungus Gymnosporangium juniperi virginianae. Both hosts, the… …   Universalium

  • cedar-apple rust — noun Date: 1946 a gall producing disease especially of the apple caused by a rust fungus (Gymnosporangium juniperi virginianae) that completes the first part of its life cycle on the common red cedar (Juniperus virginiana) and the second on the… …   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

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  • cedar rust — noun : apple rust * * * cedar rust, 1. a destructive disease caused by a fungus that begins its life cycle on cedar trees and later spreads to apple trees. 2. the fungus that produce this disease …   Useful english dictionary

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