Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Datasheet

Gymnosporangium fuscum
(European pear rust)

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Datasheet

Gymnosporangium fuscum (European pear rust)

Summary

  • Last modified
  • 15 July 2018
  • Datasheet Type(s)
  • Pest
  • Preferred Scientific Name
  • Gymnosporangium fuscum
  • Preferred Common Name
  • European pear rust
  • Taxonomic Tree
  • Domain: Eukaryota
  •   Kingdom: Fungi
  •     Phylum: Basidiomycota
  •       Subphylum: Pucciniomycotina
  •         Class: Pucciniomycetes

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Pictures

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PictureTitleCaptionCopyright
Spermogonia and aecia of G. sabinae on pear leaves.  (A) Aecia on undersurface; (B) Spermogonia on upper surface.
TitleSpermogonia and aecia
CaptionSpermogonia and aecia of G. sabinae on pear leaves. (A) Aecia on undersurface; (B) Spermogonia on upper surface.
CopyrightM. Fawaz Azmeh/University of Damascus
Spermogonia and aecia of G. sabinae on pear leaves.  (A) Aecia on undersurface; (B) Spermogonia on upper surface.
Spermogonia and aeciaSpermogonia and aecia of G. sabinae on pear leaves. (A) Aecia on undersurface; (B) Spermogonia on upper surface. M. Fawaz Azmeh/University of Damascus
Close-up of mature G. sabinae aecia on lower surface of pear leaf.
TitleAecia
CaptionClose-up of mature G. sabinae aecia on lower surface of pear leaf.
CopyrightM. Fawaz Azmeh/University of Damascus
Close-up of mature G. sabinae aecia on lower surface of pear leaf.
AeciaClose-up of mature G. sabinae aecia on lower surface of pear leaf.M. Fawaz Azmeh/University of Damascus
Close-up of G. sabinae spermogonia on upper surface of pear leaf.
TitleSpermogonia
CaptionClose-up of G. sabinae spermogonia on upper surface of pear leaf.
CopyrightM. Fawaz Azmeh/University of Damascus
Close-up of G. sabinae spermogonia on upper surface of pear leaf.
SpermogoniaClose-up of G. sabinae spermogonia on upper surface of pear leaf.M. Fawaz Azmeh/University of Damascus
G. sabinae symptoms (pear rust) on pear leaves.
TitleSymptoms
CaptionG. sabinae symptoms (pear rust) on pear leaves.
CopyrightThorsten Kraska, University of Bonn, Germany
G. sabinae symptoms (pear rust) on pear leaves.
SymptomsG. sabinae symptoms (pear rust) on pear leaves. Thorsten Kraska, University of Bonn, Germany
G. sabinae symptoms (pear rust) on pear leaves.
TitleSymptoms
CaptionG. sabinae symptoms (pear rust) on pear leaves.
CopyrightThorsten Kraska, University of Bonn, Germany
G. sabinae symptoms (pear rust) on pear leaves.
SymptomsG. sabinae symptoms (pear rust) on pear leaves. Thorsten Kraska, University of Bonn, Germany
'Telia horns' of G. sabinae on alternative host plant Juniperus oxycedrus.
Title'Telia horns'
Caption'Telia horns' of G. sabinae on alternative host plant Juniperus oxycedrus.
CopyrightM. Fawaz Azmeh/University of Damascus
'Telia horns' of G. sabinae on alternative host plant Juniperus oxycedrus.
'Telia horns''Telia horns' of G. sabinae on alternative host plant Juniperus oxycedrus.M. Fawaz Azmeh/University of Damascus
Tumefaction of infected branches by Gymnosporangium sabinae on alternative host plant Juniperus oxycedrus.  Note scars caused by telial horns
Title'Telia horns'
CaptionTumefaction of infected branches by Gymnosporangium sabinae on alternative host plant Juniperus oxycedrus. Note scars caused by telial horns
CopyrightM. Fawaz Azmeh/University of Damascus
Tumefaction of infected branches by Gymnosporangium sabinae on alternative host plant Juniperus oxycedrus.  Note scars caused by telial horns
'Telia horns'Tumefaction of infected branches by Gymnosporangium sabinae on alternative host plant Juniperus oxycedrus. Note scars caused by telial hornsM. Fawaz Azmeh/University of Damascus
Old perennial canker on Juniperus oxycedrus.
TitlePerennial canker
CaptionOld perennial canker on Juniperus oxycedrus.
CopyrightM. Fawaz Azmeh/University of Damascus
Old perennial canker on Juniperus oxycedrus.
Perennial cankerOld perennial canker on Juniperus oxycedrus.M. Fawaz Azmeh/University of Damascus
Teliospores of G. sabinae. Note distinctive location of germination pores in the two central spores.
TitleTeliospores
CaptionTeliospores of G. sabinae. Note distinctive location of germination pores in the two central spores.
CopyrightM. Fawaz Azmeh/University of Damascus
Teliospores of G. sabinae. Note distinctive location of germination pores in the two central spores.
TeliosporesTeliospores of G. sabinae. Note distinctive location of germination pores in the two central spores.M. Fawaz Azmeh/University of Damascus

Identity

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Preferred Scientific Name

  • Gymnosporangium fuscum DC.

Preferred Common Name

  • European pear rust

Other Scientific Names

  • Gymnosporangium sabinae (Dicks.) G. Winter
  • Puccinia juniperi Pers.
  • Roestelia cancellata Rebent.

International Common Names

  • English: juniper rust; pear rust; rust: Juniperus spp.; rust: pear; trellis rust
  • Spanish: roya del peral
  • French: rouille européenne du poirier; rouille grillagée du poirier

Local Common Names

  • Germany: Birnengitterrost; Gitter-: Birne Rost; Rost: Sadebaum

EPPO code

  • GYMNFU (Gymnosporangium fuscum)

Taxonomic Tree

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  • Domain: Eukaryota
  •     Kingdom: Fungi
  •         Phylum: Basidiomycota
  •             Subphylum: Pucciniomycotina
  •                 Class: Pucciniomycetes
  •                     Order: Pucciniales
  •                         Family: Pucciniaceae
  •                             Genus: Gymnosporangium
  •                                 Species: Gymnosporangium fuscum

Distribution Table

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The distribution in this summary table is based on all the information available. When several references are cited, they may give conflicting information on the status. Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report.

Continent/Country/RegionDistributionLast ReportedOriginFirst ReportedInvasiveReferenceNotes

Asia

ChinaRestricted distributionWang and Guo, 1985; EPPO, 2014
-ShaanxiPresentWang and Guo, 1985; EPPO, 2014
Georgia (Republic of)PresentKheladze and Dvurechenskaya-Tskhvedazde, 1984
IranPresentJolfaii and Abbasi, 2001
Korea, Republic ofPresentEPPO, 2014
LebanonPresentCMI, 1989; Habib et al., 2012; EPPO, 2014
SyriaPresentCMI, 1989; EPPO, 2014
TurkeyPresentCMI, 1989; EPPO, 2014
United Arab EmiratesRestricted distributionEPPO, 2014

Africa

AlgeriaPresentCMI, 1989; EPPO, 2014
MoroccoPresentCMI, 1989; EPPO, 2014

North America

CanadaRestricted distributionCMI, 1989; EPPO, 2014
-British ColumbiaPresentCMI, 1989; EPPO, 2014
USARestricted distributionCMI, 1989; EPPO, 2014
-AlabamaPresentCMI, 1989; EPPO, 2014
-CaliforniaPresentCMI, 1989; EPPO, 2014
-MichiganPresentYun et al., 2009; EPPO, 2014
-New YorkPresentKenaley et al., 2012; EPPO, 2014
-VirginiaPresentHansen et al., 2016
-WashingtonPresentEPPO, 2014

Europe

AustriaWidespreadEPPO, 2014
BelgiumPresentCMI, 1989; EPPO, 2014
BulgariaPresent, few occurrencesCMI, 1989; EPPO, 2014
CyprusPresent, few occurrences1931CMI, 1989; EPPO, 2014
Czech RepublicPresentCMI, 1989; EPPO, 2014
Czechoslovakia (former)WidespreadEPPO, 2014
DenmarkPresentCMI, 1989; EPPO, 2014
FranceWidespreadCMI, 1989; EPPO, 2014
GermanyPresent, few occurrences****CMI, 1989; EPPO, 2014
GreecePresentCMI, 1989; EPPO, 2014
ItalyPresentCMI, 1989; EPPO, 2014
NetherlandsPresentCMI, 1989; EPPO, 2014
NorwayPresentCMI, 1989; Gj<ae>rum et al., 2008; EPPO, 2014
PolandPresentCMI, 1989; EPPO, 2014
PortugalAbsent, formerly presentEPPO, 2014
-AzoresPresentCMI, 1989
RomaniaPresentCMI, 1989; EPPO, 2014
Russian FederationRestricted distributionEPPO, 2014
-Russia (Europe)Restricted distributionEPPO, 2014
-Southern RussiaPresentCMI, 1989
SerbiaPresentMijuskovic, 1979; CMI, 1989; EPPO, 2014
SlovakiaPresentCMI, 1989
SpainPresentCMI, 1989; EPPO, 2014
SwedenRestricted distribution****CMI, 1989; EPPO, 2014
SwitzerlandPresentCMI, 1989; EPPO, 2014
UKRestricted distribution****CMI, 1989; EPPO, 2014
-England and WalesRestricted distributionEPPO, 2014
-ScotlandRestricted distributionEPPO, 2014
UkraineRestricted distributionCMI, 1989; EPPO, 2014

Growth Stages

Top of page Vegetative growing stage

List of Symptoms/Signs

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SignLife StagesType
Fruit / lesions: scab or pitting
Leaves / fungal growth
Stems / galls

Plant Trade

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Plant parts liable to carry the pest in trade/transportPest stagesBorne internallyBorne externallyVisibility of pest or symptoms
Fruits (inc. pods) fruiting bodies Yes Pest or symptoms usually visible to the naked eye
Leaves fruiting bodies Yes Pest or symptoms usually visible to the naked eye
Stems (above ground)/Shoots/Trunks/Branches fruiting bodies Yes Pest or symptoms usually visible to the naked eye
Plant parts not known to carry the pest in trade/transport
Bark
Bulbs/Tubers/Corms/Rhizomes
Flowers/Inflorescences/Cones/Calyx
Growing medium accompanying plants
Roots
Seedlings/Micropropagated plants
True seeds (inc. grain)
Wood

References

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Akesson I, 1983. Plant protection year 1982 Horticulture. Vaxtskyddsnotiser, 47(1/2):5-7

Bondoux P, 1988. Gymnosporangium sabinae. In: European Handbook of Plant Diseases. Oxford, UK: Blackwell, 479.

Dinc N; Karaca I, 1975. Researches on pear rust disease (Gymnosporangium fuscum DC.) in Elazig and Malatya. Journal of Turkish Phytopathology, 4(2):63-73

EPPO, 2014. PQR database. Paris, France: European and Mediterranean Plant Protection Organization. http://www.eppo.int/DATABASES/pqr/pqr.htm

Gjrum HB; Gauslaa Y; Talg V, 2008. Gymnosporangium sabinae found in Norway. Plant Pathology, 57(2):376. http://www.blackwell-synergy.com/doi/abs/10.1111/j.1365-3059.2007.01730.x

Habib W; Wakim S; Hobeika C; Choueiri E, 2012. First report of Gymnosporangium sabinae on cultivated pear in Lebanon. Journal of Plant Pathology, 94(4, Supplement):S4.104. http://www.sipav.org/main/jpp/

Hansen MA; Demers J; Sutphin M; Yoder K; Bush E; Castlebury L, 2016. First report of European pear rust (pear trellis rust) caused by Gymnosporangium sabinae on ornamental pear (Pyrus calleryana) in Virginia. Plant Disease, 100(11):2166. http://apsjournals.apsnet.org/loi/pdis

Hilber U; Schuepp H; Schwinn FJ, 1990. Studies on infection biology of Gymnosporangium fuscum DC. Zeitschrift fur Pflanzenkrankheiten und Pflanzenschutz, 97(3):299-305

Hilber U; Schuepp H; Schwinn FJ, 1990. Studies on the development of pear trellis rust. Schweizerische Zeitschrift fur Obst- und Weinbau, 126(18):486-494

Hilber UW; Siegfried W; Viret O, 1997. Rust [caused by Gymnosporangium fuscum] of pears and juniper [Juniperus]: control methods for important attacks. Revue Suisse de Viticulture, d'Arboriculture et d'Horticulture, 29(5):281-284.

Hunt RS; O'Reilly HJ, 1978. Overwintering of pear trellis rust in pear. Plant Disease Reporter, 62(8):659-660

IMI, 1996. Distribution Maps of Plant Diseases, Map No. 173. Wallingfrod, UK: CAB International.

Jolfaii HK; Abbasi M, 2001. Gymnosporangium fuscum, a new rust fungus to Iran. Rostaniha, 2(1/4):En66-En67, Pe114-115.

Kenaley S; Daughtrey M; O'Brien D; Jensen S; Snover-Clift K; Hudler G, 2012. First report of the pear trellis rust fungus, Gymnosporangium sabinae, on Pyrus calleryana ('Bradford' and 'Chanticleer') and P. communis in New York State. Plant Disease, 96(9):1373-1374. http://apsjournals.apsnet.org/loi/pdis

Kern FD, 1973. A Revised Taxonomic Account of Gymnosporangium. University Park, USA: Penn State University Press.

Kheladze VS; Dvurechenskaya-Tskhvedazde LP, 1984. Resistance factors in varieties of pear against rust Gymnosporangium sabinae (Dicks.) Wint. Mikologiya i Fitopatologiya, 18(2):143-144

Laundon G, 1977. CMI Descriptions of Pathogenic Fungi and Bacteria, Set 55, Nos. 541-550:20 pp.

Leppik EE, 1977. Form and function of balanoid pcia of Gymnosporangium fuscum. Mycologia, 69(5):967-974

Mijuskovic M, 1979. The importance of Gymnosporangium sabinp (Dicks.) Wint. as the parasite of pear in the southern parts of Montenegro and the possibility of its control. Zbornik Radova, Kupari, No.1:353-363

Moore WC, 1959. British parasitic fungi. Cambridge, UK: Cambridge University Press, 430 pp.

OEPP/EPPO, 1999. EPPO Standards PP 2/18. Good Plant Protection Practice for pome fruits. Bulletin OEPP/EPPO Bulletin 29, 379-406.

O'Reilly HJ; Ziller WG, 1973. Pear trellis rust in British Columbia. Vancouver, Canada: British Columbia Department of Agriculture.

Ormrod DJ, 1979. Control of pear trellis rust in coastal British Columbia by eradication of infected Juniperus spp. Phytopathology, 69(8):919.

Ormrod DJ; O'Reilly HJ; Kamp BJVan der; Borno C, 1984. Epidemiology, cultivar susceptibility and chemical control of Gymnosporangium fuscum in British Columbia. Canadian Journal of Plant Pathology, 6(1):63-70

Parmelee JA, 1974. Fungi Canadenses, No. 43. Ottawa; Canada: National Mycological Herbarium.

Viret O, 1997. Recommendations for control of the principal diseases of fruit trees. Revue Suisse de Viticulture, d'Arboriculture et d'Horticulture, 29(1):47-50.

Wang YC; Guo L, 1985. Taxonomic studies on Gymnosporangium in China. Acta Mycologica Sinica, 4(1):24-34

Yun HY; Rossman AY; Byrne J, 2009. First report of Gymnosporangium sabinae, European pear rust, on bradford pear in Michigan. Plant Disease, 93(8):841. http://apsjournals.apsnet.org/loi/pdis

Distribution Maps

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