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Gymnosporangium juniperi-virginianae is a plant pathogen that causes cedar-apple rust. [1] In virtually any location where apples or crabapples and eastern red cedar (Juniperus virginiana) coexist, cedar apple rust can be a destructive or disfiguring disease on both the apples and cedars.
Gymnosporangium globosum is a heteroecious rust fungus that requires two hosts to complete its life cycle. Its telial stage occurs on eastern red cedar, Rocky Mountain juniper, southern red cedar, and other common junipers while its aecial stage will be found on apple, crabapple, hawthorne, and occasionally on pear, quince, and serviceberry.
Cedar-apple rust [10] Gymnosporangium kernianum: Juniperus: Amelanchier: Kern's pear rust [11] Gymnosporangium libocedri (Now Gymnotelium blasdaleanum, Pucciniaceae family) Calocedrus: Amelanchier: Pacific Coast pear rust, [11] Incense cedar broom rust [10] Gymnosporangium malyi (not known) Crataegus: Gymnosporangium multiporum: Juniperus (not ...
Cedar-apple rust disease, for example, can persist despite removal of one of the hosts since spores can be disseminated from long distances. The severity of cedar-apple rust disease can be managed by removal of basidiospore producing galls from junipers or the application of protective fungicides to junipers. [24]
Cedar rust may refer to: Gymnosporangium juniperi-virginianae, or Cedar-apple rust; Gymnosporangium clavipes, or Cedar-quince rust; Gymnosporangium globosum, ...
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Cedar-apple rust (Gymnosporangium juniperi-virginianae) produces hard stem galls in winter of up to 5 centimeters in width on susceptible junipers. These are not seriously harmful to the juniper host, but in the spring the galls produce soft, gummy horns that release spores to infect apples and related plants in the rose family where it is a ...