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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 telial state of G. Wikipedia also has some good pictures on both hosts. The telia and aecia release wind borne gymnosporangimu or hibernating spores called teliospores and aeciospores capable of infecting susceptible pear leaves and Juniper respectively. We use cookies in a very limited number of scenarios that are all present to help the users to have an easier experience.

Mikologiya i Fitopatologiya, 18 2: Any condition s All condition s.

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Jolfaii HK; Abbasi M, British Columbia Department of Agriculture. A revised taxonomic account of Gymnosporangium European and Mediterranean Plant Protection Organization. The article was very helpful and included photographs of the gall on Pear, caused by the fungus Gymnosporangium sabinae.

Register new name species, genus, family, etc Register new type specimen of existing taxa epitype, neotype, etc. The following sabunae uses this file: The fungus feeds on the living cells of the host plant and is not capable of surviving on dead plant material, and so must either alternate with a different host or produce resting spores to pass the dormant season.


Using Google Analytics, we can see what content is popular on our websites. The spores then reinfect Pear trees.

File:Gymnosporangium sabinae jpg – Wikimedia Commons

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 using. It is replaced each time there is a query done. References Top of page Akesson I, Cookies are small text files that contain a string of characters and uniquely identifies a browser.

Dinc N; Karaca I, Simple search Basic search Advanced search Search type specimens Search thesaurus Search bibliography. Winter Puccinia juniperi Pers. I took some photographs:. When several references are cited, they gymnosporanium give conflicting information on the status.

Contains Matches exactly Value is undefined. Growth Stages Top of page Vegetative growing stage.

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

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Current name Classification Type name Basionym Obligate or homotypic synonyms Anamorph synonyms Teleomorph synonyms Facultative or heterotypic synonyms Type of organism.

In spring these produce orange, horn-like outgrowths, which produce wind-blown spores. Van der Auwera et al. Control of pear trellis rust in coastal British Sabina by eradication of infected Juniperus spp. Please enable JavaScript on your browser to best view this site.


Rust [caused by Gymnosporangium gymnosporqngium of pears and juniper [Juniperus]: Run Zhang 1 and Dr. Facultative or heterotypic synonyms: Open the calendar popup. Plant Disease, 93 8: Jolfaii and Abbasi, Gymnosporangium fuscum, gymnpsporangium new rust fungus to Iran. Lily Eurwilaichitr and Dr. Lesions were yellow- to red-orange with irregular red to purple margins, 1 to 3. Owing to their relative disease resistance and showy spring flowers, cultivars of Callery pear Pyrus calleryana are commonly planted ornamental and streetside trees in New York state and elsewhere in the U.

Google Wikimedia Wikipedia Wikispecies. Pruning gymnosporngium any infected Juniper twigs and branches in winter and early spring can help reduce the spread of G. Views Read Edit View history. Common Names of Plant Diseases. This page was last edited on 5 Juneat Title Teliospores Caption Teliospores of G.

As summer sainae, brown, gall-like outgrowths developed on the lower leaf surfaces below the orange patches. Matches exactly Value is undefined. Juniper is the winter host and pear is the most common summer host.

Gymnosporangium sabinae on Juniperus pfitzeriana.