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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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. The most direct method of control is to exterminate Junipers near pear trees. Given the widespread planting of Callery pear and occurrence of susceptible Juniperus spp.

Gymnosporangium sabinae

Growth Stages Top of page Vegetative growing stage. First report of Gymnosporangium sabinae on cultivated pear in Lebanon. A Revised Taxonomic Account of Gymnosporangium. See below for more information. The disease causes a yellow-orange spot that turns bright red on leaves of pear trees.


Cambridge University Press, pp. Title ‘Telia horns’ Caption ‘Telia horns’ of G. Views View Edit History. First report of European pear rust pear trellis rust caused by Gymnosporangium sabinae on ornamental pear Pyrus calleryana in Virginia.

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It is not a great cropper, with only a couple of fruit each year, though it is very beautiful in spring, when it is covered with a mass of flowers see photograph below. Researches on pear rust disease Gymnosporangium fuscum DC.

They are sent to a computer by website operators or third parties. Epidemiology, cultivar susceptibility and chemical control of Gymnosporangium fuscum in British Columbia. Studies on gymnosporangiun development of pear trellis rust. 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.

Note scars caused by telial horns. British Columbia Department of Agriculture.

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

This page was gymbosporangium edited on 6 Novemberat Open the calendar popup. Datasheet Gymnosporangium fuscum European pear rust. Topical Meetings and Workshops.

These cookies allow us to see information on user website activities including, but not limited to page views, source and time spent on a website. Pear Rust, early Gymnosporanglum leaf lowerside. Tumefaction of infected branches by Gymnosporangium sabinae on alternative host plant Juniperus oxycedrus.


The corresponding stage on the pear trees is known as aecia. Retrieved from ” https: Description Gymnosporangium sabinae Genomic DNA was extracted from rust-infected tissue on P.

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

Pear trellis rust in British Columbia. Distribution Maps Top of page You can pan and zoom the map. For practical reasons we have decided not to translate all pages in several languages anymore because it was too heavy to maintain but some of the labels of the basic and advanced query pages are still available. The importance of Gymnosporangium sabinp Dicks. Contact our curators Dr. Zbornik Radova, Kupari, No.

Plant Disease, Sanctioned by Gymnospornagium name Validated by Type specimen or ex type More specimens Human pathogenicity code Plant pathogenicity code Code toxicity. Zeitschrift fur Pflanzenkrankheiten und Pflanzenschutz, 97 3: Using Google Analytics, we can see what content is popular on our websites. Penn State University Press.