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 telia and aecia release wind borne resting or hibernating spores called teliospores and gtmnosporangium capable of infecting susceptible pear leaves and Juniper respectively. Good Plant Protection Practice for pome fruits. Distribution Maps Top of page You can pan and zoom the map.

Run Zhang 1 and Dr. Like many rust diseases, G.

The disease can be particularly damaging on pear, resulting in complete defoliation and crop loss if not treated. The spores then reinfect Pear trees. Dinc N; Karaca I, Title ‘Telia horns’ Caption ‘Telia horns’ of G. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong. Note scars caused by telial horns Copyright M.

First Report of Gymnosporangium sabinae, European Pear Rust, on Bradford Pear in Michigan

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. The information is depersonalized and is displayed as numbers, meaning it cannot be traced back to individuals.


Leaf samples were collected in June and August and ; adaxial surface lesions resembled infection by fungi in the genus Gymnosporangium Pucciniales. Don’t need the entire report?

Zbornik Radova, Kupari, No. Penn State Gymnosporangkum Press. Jolfaii and Abbasi, Views View Edit History. The geographic locations of affected trees described herein suggest that the trellis rust fungus is well-established across New York, and has spread undetected since its introduction.

Pear Rust, early October leaf lowerside. This page was last edited on 6 Novemberat This is used when first reloading the page.

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

Studies on infection biology of Gymnosporangium fuscum DC. Title ‘Telia horns’ Caption Tumefaction of infected branches by Gymnosporangium sabinae on alternative host plant Juniperus oxycedrus. Google cookies and technologies Google Analytics: Form and function of balanoid pcia of Gymnosporangium fuscum. Most browsers are initially set up to accept cookies, since this is required by most website owners in order to access their sites. Topical Meetings and Workshops. Epidemiology, cultivar susceptibility and chemical control of Gymnosporangium fuscum in British Columbia.

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. Journal of Turkish Phytopathology, 4 2: Cookies mentioned in the last point are Google analytics cookies that are IP anonymized which means that we cannot trace single users. Mikologiya i Fitopatologiya, 18 2: The fungus overwinters on Juniper, where it forms a perennial infection on the stem. Retrieved from ” https: 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.


It is replaced each time there is a query done. Wang YC; Guo L, Pear Rust, early October leaf upperside.

Gymnosporangium fuscum (European pear rust)

If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. Taxonomic studies on Gymnosporangium in China. Facultative or heterotypic synonyms: The corresponding stage on the pear trees is known as aecia.

Please consider upgrading your browser to the latest version or installing a new browser. The following other wikis use this file: Control of pear trellis rust in coastal British Columbia by eradication of infected Juniperus spp.

Spermogonia and aecia sabijae G.

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