Ecology
Associations
Associations
Foodplant / gall
aecium of Gymnosporangium clavariiforme causes gall of live, swollen petiole of Crataegus monogyna
Remarks: season: 7-9+
Other: major host/prey
Foodplant / gall
emergent telium of Gymnosporangium clavariiforme causes gall of witches broom branch of Juniperus communis
Remarks: season: 4-5
Other: sole host/prey
minor host/prey
Foodplant / gall
hypophyllous aecium of Gymnosporangium clavariiforme causes gall of live leaf of Cotoneaster
Remarks: season: 7-9+
Other: minor host/prey
Foodplant / gall
aecium of Gymnosporangium clavariiforme causes gall of live, swollen petiole of Crataegus laevigata
Remarks: season: 7-9+
Other: major host/prey
Foodplant / gall
hypophyllous aecium of Gymnosporangium clavariiforme causes gall of live leaf of Aronia
Remarks: season: 7-9+
Other: minor host/prey
Foodplant / gall
hypophyllous aecium of Gymnosporangium clavariiforme causes gall of live leaf of Amelanchier lamarckii
Remarks: season: 7-9+
Other: minor host/prey
Foodplant / gall
hypophyllous aecium of Gymnosporangium clavariiforme causes gall of live leaf of Pyrus communis sens. str.
Remarks: season: 7-9+
Other: minor host/prey
Foodplant / gall
hypophyllous aecium of Gymnosporangium clavariiforme causes gall of live leaf of Rosaceae
Remarks: season: 7-9+
Foodplant / gall
hypophyllous aecium of Gymnosporangium clavariiforme causes gall of live leaf of Sorbus
Remarks: season: 7-9+
Other: minor host/prey
Foodplant / gall
hypophyllous aecium of Gymnosporangium clavariiforme causes gall of live leaf of Cydonia oblonga
Remarks: season: 7-9+
Other: minor host/prey
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Wikipedia
Gymnosporangium clavariiforme
Gymnosporangium clavariiforme is a species of rust fungus which alternately infects Juniperus and hawthorns.[2]
In junipers,the primary hosts, G. clavariiforme produces a set of orange tentacle-like spore tubes called telial horns. These horns expand and have a jelly like consistency when wet.[3] The spores are released and travel on the wind until they infect a hawthorn tree.
On the secondary hosts, the fungus produces yellowish depressions on the leaves. It also infects the fruit, which grows whitish tubes like a Medusa head. These are the spore tubes. The spores must then infect a juniper to complete the life cycle.
The fungus does not cause serious damage to junipers, but hawthorns can suffer serious loss of haw production due to the effects of the fungus.
References
- ^ "Gymnosporangium clavariiforme (Wulfen) DC. 1805". MycoBank. International Mycological Association. http://www.mycobank.org/MycoTaxo.aspx?Link=T&Rec=219656. Retrieved 2011-07-08.
- ^ Kirk PM, Cannon PF, Minter DW, Stalpers JA. (2008). Dictionary of the Fungi (10th ed.). Wallingford, UK: CABI. ISBN 978-0-85199-826-8.
- ^ SORTING OUT Gymnosporangium SPECIES - The aecial stage, Field Mycology Volume 7(4), October 2006, Brand, Brand and Shattock.
Further reading
- Phillips, D. H., & Burdekin, D. A. (1992). Diseases of Forest and Ornamental Trees. Macmillan.
- Scharpf, R. F., ed. (1993). Diseases of Pacific Coast Conifers. USDA Forest Service Agricultural Handbook 521.
Source:
Wikipedia
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