Like many rust diseases, G. sabinae requires two different hosts to complete its life cycle from year to year. Juniper is the winter host and pear is the most. Gymnosporangium sabinae: spermogonia on Pyrus pyraster. detail. Gymnosporangium sabinae: spermogonia on Pyrus pyraster. the underside of the leaf is. Spermogonia and aecia of G. sabinae on pear leaves. Tumefaction of infected branches by Gymnosporangium sabinae on alternative host plant Juniperus.

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The distribution in this summary table is based on all the information available. Acta Mycologica Sinica, 4 1: They sahinae sent to a computer by website operators or third parties.

Title Aecia Caption Close-up of mature G. We therefore monitored rust-infected Callery pears in Riverhead as well as a common pear P.

Title Spermogonia Caption Close-up gymnosporangijm G. We use cookies in a very limited number of scenarios that are all present to help the users to have an easier experience.

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Pear Rust, Gymnosporangium sabinae (aka Pear Juniper Rust or Pear Leaf Gall)

Pruning out any infected Juniper twigs and branches in winter and early spring can help reduce the spread of G. Title ‘Telia horns’ Caption Tumefaction of infected branches by Gymnosporangium sabinae on alternative host plant Juniperus oxycedrus. European Handbook of Plant Diseases. Since we moved house, our patio Pear tree has been in a much sunnier spot and now yields around fifty fruit in most years. When several references are cited, they may give conflicting information on the status.


Google cookies and technologies Google Analytics: Obligate or homotypic synonyms: Rust [caused by Gymnosporangium fuscum] of pears and juniper [Juniperus]: A Revised Taxonomic Account of Gymnosporangium. Distribution Maps Top of page You can pan and zoom the map.

Gymnosporangium fuscum (European pear rust)

The importance of Gymnosporangium sabinp Dicks. Cookies mentioned in the last point are Google analytics cookies that are IP anonymized which means that we cannot trace single users.

Retrieved from ” https: Plant Disease, 96 9: The most direct sabunae of control is to exterminate Junipers near pear trees. Wikipedia also has some good pictures on both hosts.

Studies on the development of pear trellis rust. Zbornik Radova, Kupari, No.

File:Gymnosporangium sabinae jpg – Wikimedia Commons

Volker Croythe copyright holder of this work, hereby publishes it under the following license:. Title ‘Telia horns’ Caption ‘Telia horns’ of G. You can prevent the information generated by the Google cookie about your use of our Sites from being collected and processed by Google in the future by downloading and installing Google Analytics Opt-out Browser Add-on for your current web browser.

In spring these produce orange, horn-like outgrowths, which produce wind-blown spores. Recommendations for control of the principal diseases of fruit trees.


File:Gymnosporangium sabinae 01.jpg

European and Mediterranean Plant Protection Organization. One or more of the features that are needed to show you the maps functionality are not available in the web browser that you are sainae.

Plant Disease, 93 8: Title Symptoms Caption G. Lesions were yellow- to red-orange with irregular red to purple margins, 1 to 3. It is one of many types of rust fungi affecting plants.

Spores called aeciospores are produced from the fungal lantern-shaped growths which protrude from the blisters on the underside of the pear leaf which become airborne and infect junipers. Revue Suisse de Viticulture, d’Arboriculture et d’Horticulture, 29 1: Sanctioned by Sanctioning name Validated by Type specimen or ex type More specimens Human pathogenicity code Plant pathogenicity code Code toxicity. Careers In Plant Pathology. The information is depersonalized and is displayed as numbers, meaning it cannot be traced back to individuals.

Resistance factors in varieties of pear against rust Gymnosporangium sabinae Dicks. If there is a chance of infection, spraying pear trees with a fungicide in spring and summer typically a systemic one that is certified as capable of dealing with rust may help, although this is often not considered worthwhile.