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The anamorph of Erysiphe platani on Platanus xhispanica in Slovakia

Authors:
Katarina Pastircakova at Slovak Academy of Sciences, Institute of Forest Ecology
Katarina Pastircakova
  • Slovak Academy of Sciences, Institute of Forest Ecology
Martin Pastircak at Plant Production Research Center Piešťany
Martin Pastircak
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Abstract and Figures

A species of powdery mildew new for the Slovak mycoflora, Erysiphe platani, which parasitizes on plane trees, is reported. Disease symptoms and morphological characteristics of the anamorph are described. No teleomorph was observed.
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MYCOTAXON
Volume 97, pp. 189–194 July–September 2006
The anamorph of Erysiphe platani on
Platanus ×hispanica in Slovakia

nruekpas@savba.sk
a Institute of Forest Ecology, Branch of Woody Plants Biology, Slovak Academy of Sciences,
Akademicka 2, SK-94901 Nitra, Slovakia
b Department of Genetics of Resistance, Research Institute of Plant Production,
Bratislavska cesta 122, SK-92168 Piešťany, Slovakia
AbstractErysiphe platani
         

Key words
Introduction
Erysiphe platani  Microsphaera platani    
 Platanus occidentalis , P. orientalis
P. ×hispanica  P. acerifoliaP. hybrida, P.
racemosa   P. wrightii        

Platanus
Platanus
Erysiphe
plataniPlatanus
 

      
P. occidentalisP. hybrida


     
.


Erysiphe
plataniP. wrightii
P. orientalisP. orientalis 
cretica
Erysiphe
platani 
   Platanus   
         

     P. hispanica

Erysiphe platani
 Erysiphe platani

       Erysiphe platani
P. hispanica

Materials and methods
P.hispanica
Erysiphe
platani
        
        
        

        
 

Taxonomic description
Erysiphe platani
Microsphaera platani
Microsphaera alni Microsphaera penicillata
Material examined         
Platanus hispanica
Ampelomyces quisqualis
Symptoms          
          


Figure 1.Erysiphe platani
    Ampelomyces quisqualis,      Ampelomyces
quisqualis 
Microscopic features –OidiumPseudoidium 
       
        


       
     
         



           
Erysiphe platani
 



     Ampelomyces quisqualis  
  Cicinobolus cesatii    Erysiphe platani. Ampelomyces
quisqualis         
Ampelomyces quisqualis       
          

Table 1.Erysiphe plataniM. platani Platanus

    
     
   
     
    
    
     
     
     
     
    
    
     
     
     
     
     
    
    
    
    
    
Slovak material 30-48 × 15.5-22 90-220 × 7-10 absent absent absent


       Erysiphe platani.  
   Erysiphe platani   
  

          
Ampelomyces quisqualis
          

Acknowledgements
          



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Literature cited

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
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 


    

 

Microsphaera platani

            

  of Platanus occidentalis Microsphaera
platani (Erysiphe platani) 

       
Arthrocladiella, Podosphaera, Microsphaera 




      



 
       


           Platanus
hybridus
          

              


Platanus 
      
 
          


      Erysiphales    







Platanus
 
Microsphaera plataniPlatanusorientalis
cretica
 
... The insect was first introduced from North America to Italy in the 1960s and has been reported from Germany since the 1980s. The powdery mildew Erysiphe platani (Howe) U. Braun and S. Takam., also a pathogen restricted to species of Platanus in North America, has been introduced to South America , South Africa, Australia, New Zealand, Asia, and also to several European countries (Braun 1987, Pastirčáková & Pastirčák 2006). In Europe, the fungus has been recorded mainly from countries in the south and southeast (ISC 2011), beginning in Italy in the 1960s according to the historical outline by Pastirčáková & Pastirčák (2006), but not from Germany. ...
... The powdery mildew Erysiphe platani (Howe) U. Braun and S. Takam., also a pathogen restricted to species of Platanus in North America, has been introduced to South America , South Africa, Australia, New Zealand, Asia, and also to several European countries (Braun 1987, Pastirčáková & Pastirčák 2006). In Europe, the fungus has been recorded mainly from countries in the south and southeast (ISC 2011), beginning in Italy in the 1960s according to the historical outline by Pastirčáková & Pastirčák (2006), but not from Germany. This powdery mildew is reported here from Frankfurt am Main and remarks on difficulties encountered in differentiating the symptoms caused by this pathogen from those caused by other reasons are noted. ...
... In contrast to the fungus, however, experimental evidence for preference of higher temperatures exists only for the bug (Ju et al. 2009 ). Similarly to several other invasive species of Erysiphales that often reproduce only asexually for a period of several years after being introduced (Kirschner 2010), E. platani in Europe was first known to reproduce by conidia only (Braun 1987, Bolay 2005, Pastirčáková & Pastirčák 2006), and also by ascospores for the first time in 2003 in Montenegro, then 2008 in Hungary (Pastirčáková & Pastirčák 2008), and now in Germany. Due to the presence of the sexual stage which is more adapted to overwintering than the asexual stage, more and seasonally earlier inoculum of the pathogen can be predicted for the following years. ...
Observations on Erysiphe platani in Germany
Article
Full-text available
  • Jan 2011
The powdery mildew Erysiphe platani was recorded on London plane (Platanus × acerifolia) in Germany. Ascomata and conidia were found on a leaf of a tree at an avenue in the city of Frankfurt am Main, which had also been colonized by the invasive Sycamore Lace Bug Corythucha ciliata. The spread of both invasive species from south Europe towards the north might be correlated with global warming. Difficulties in detecting and identifying the mildew as the causative agent of the symptoms are presented. Information relevant for the diagnosis and prognosis is compiled and discussed.
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... In the affected leaves, the presence of whitish-gray spots of powdery dusty appearance was perceived. Based on the morphology of the asexual stages, as well as on the identity of the host plant species (Braun & Cook, 2012;Kirschner, 2011;Pastirčácová & PastirčáK, 2006, 2008, the causal agent of this powdery mildew infection was identified as Erysiphe platani (Howe) U. Braun & S. Takam. It is a powdery mildew species native to North America, where is known to occur on Platanus spp., and has been introduced in South America, South Africa, Australia, New Zealand, Asia, and several European countries as well (Heluta et al., 2013). ...
Natural occurrence of the mycoparasite Ampelomyces quisqualis (Ascomycota, Phaeosphaeriaceae) in urban environments from Tucumán (Argentina)
Article
Full-text available
  • Dec 2023
Platanus × acerifolia is used as an urban shade tree in many cities throughout Argentina. In late autumn and winter of 2023, leaves and fruits of P. × acerifolia showing typical symptoms of a powdery mildew were collected along the main streets of Tucumán, Argentina. Its morphology and comparison with published descriptions allowed us to identify the fungus as the asexual morph of Erysiphe platani. The specimens were heavily hyperparasitized by Ampelomyces quisqualis, a mycoparasitic ascomycete, used as a natural biological control of the development of powdery mildew species. This work reports the natural occurrence of Ampelomyces in urban environments in Argentina. The disease symptoms and morphological characteristics of the powdery mildew anamorph and the mycoparasite are described and illustrated.
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... It was first recorded in Europe in Italy (Sprenger, 1916after Pastirčáková et al., 2014. The fungus has since spread and is now observed almost throughout the entire continent (Ranković, 2003;Kirschner, 2011;Scholler et al., 2012;Heluta et al., 2013;Pastirčáková & Pastirčák, 2006, 2008Pastirčáková et al., 2014;Ligoxigakis et al., 2015). It was recorded on Ailanthus altissima, a plant of the family Simaroubaceae in the order Sapindales, in Switzerland in 2017 (Beenken, 2017). ...
Epidemic of Erysiphe platani in urban areas on the example of the Szczecin (NW Poland)
Article
Full-text available
  • Dec 2019
Investigations a development of infection caused by Erysiphe platani on plane trees (Platanus x hispanica) were conducted in the large city in north-western Poland in the years 2014-2017. Leaf infection as well as the frequency and phenology of the fungus were assessed. The occurrence and biology of E. platani at individual research localities varied depending on the infection time and habitat conditions. A correlation between the presence of Discula platani and the timeline of the occurrence of disease symptoms induced by E. platani was identified.
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... Erysiphe platani (formerly Microsphaera platani) has been recorded in many countries, e.g. Bulgaria (Fakirova 1991), France (Viennot-Bourgin 1982Kreisel, Scholler 1994), Germany (Kirschner 2011;Scholler et al. 2012), Greece (Vakalounakis, Klironomou 1995), Hungary (Pastirčáková, Pastirčák 2008), Italy (Bongarra 1981;Ialongo 1981), Portugal (Sequeira 1981), Romania (Negrean, Anastasiu 2006), Russia (Karpun 2012), Slovakia (Pastirčáková, Pastirčák 2006), Spain (Tello et al. 2000), Switzerland (Bolay 2005), the United Kingdom (Ing 1991;Jones, Baker 2007; observed also by V.P. Heluta in London in 2000), and Yugoslavia (Mijuskovic 1993). The fungus was also found in Asia. ...
Distribution of Erysiphe platani (Erysiphales) in Ukraine
Article
Full-text available
  • Jun 2013
Information is provided on Erysiphe platani, a newly invasive fungus in Ukraine. The anamorph of this North American powdery mildew was first recorded in Ukraine in 1986 on Platanus orientalis in the Nikita Botanical Garden (Crimea). Later, it was found in other localities of the Crimean peninsula, and in Odessa and Odessa region on three species of plane, namely P. . hispanica, P. occidentalis and P. orientalis. Spread of the fungus was epiphytotic. This mildew significantly reduces the ornamental value of plane trees, which are often planted in public open spaces within urban areas of southern Ukraine. Recently, E. platani has formed the teleomorph in this region. Morphologically, the Ukrainian material is slightly different from the species description, viz. appendages are longer (up to 3 times the chasmothecial diam.), often with less compact apices.
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Global Distribution of Erysiphe platani : New Records, Teleomorph Formation and Re-Examination of Herbarium Collections
Article
Full-text available
  • Jun 2014
A global survey of the spread of the Platanus powdery mildew, Erysiphe platani, has been carried out. E. platani teleomorph formation was recorded in countries where the fungus anamorph has been present for several years. The first findings of chasmothecia were recorded in Austria, Czech Republic, France, Italy and Slovakia. New records of E. platani (including the teleomorph) were found in Belgium, Croatia and Denmark. The occurrence of this fungus in Sweden and in two countries of North Africa (Algeria and Morocco) was confirmed. Descriptions of morphological features, illustrations, and worldwide distribution of E. platani are provided. Herbarium collections of powdery mildews on Platanus spp. were re-examined and revised. The occurrence of Phyllactinia guttata on Platanus is discussed and questioned.
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Erysiphe platani causing powdery mildew of London plane in Hungary
Article
Full-text available
  • Jun 2008
This is the first record of Erysiphe platani on London plane (Platanus × hispanica) trees in Hungary. Photographic documentation and description of the morphology of both the anamorph and the teleomorph stages of this fungus are provided in this paper.
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New and Interesting Fungi. 1
Article
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  • Jun 2018
This study introduces two new families, one new genus, 22 new species, 10 new combinations, four epitypes, and 16 interesting new host and / or geographical records. Cylindriaceae (based on Cylindrium elongatum) is introduced as new family, with three new combinations. Xyladictyochaetaceae (based on Xyladictyochaeta lusitanica) is introduced to accommodate Xyladictyochaeta. Pseudoanungitea gen. nov. (based on P. syzygii) is described on stems of Vaccinium myrtillus (Germany). New species include: Exophiala eucalypticola on Eucalyptus obliqua leaf litter, Phyllosticta hakeicola on leaves of Hakea sp., Setophaeosphaeria citricola on leaves of Citrus australasica, and Sirastachys cyperacearum on leaves of Cyperaceae (Australia); Polyscytalum chilense on leaves of Eucalyptus urophylla (Chile); Pseudoanungitea vaccinii on Vaccinium myrtillus (Germany); Teichospora quercus on branch tissue of Quercus sp. (France); Fusiconidium lycopodiellae on stems of Lycopodiella inundata, Monochaetia junipericola on twig of Juniperus communis, Myrmecridium sorbicola on branch tissues of Sorbus aucuparia, Parathyridaria philadelphi on twigs of Philadelphus coronarius, and Wettsteinina philadelphi on twigs of Philadelphus coronarius (Germany); Zygosporium pseudogibbum on leaves of Eucalyptus pellita (Malaysia); Pseudoanungitea variabilis on dead wood (Spain); Alfaria acaciae on leaves of Acacia propinqua, Dictyochaeta mimusopis on leaves of Mimusops caffra, and Pseudocercospora breonadiae on leaves of Breonadia microcephala (South Africa); Colletotrichum kniphofiae on leaves of Kniphofia uvaria, Subplenodomus iridicola on Iris sp., and Trochila viburnicola on twig cankers on Viburnum sp. (UK); Polyscytalum neofecundissimum on Quercus robur leaf litter, and Roussoella euonymi on fallen branches of Euonymus europaeus (Ukraine). New combinations include: Cylindrium algarvense on leaves of Eucalyptus sp. (Portugal), Cylindrium purgamentum on leaf litter (USA), Cylindrium syzygii on leaves of Syzygium sp. (Australia), Microdochium musae on leaves of Musa sp. (Malaysia), Polyscytalum eucalyptigenum on Eucalyptus grandis × pellita (Malaysia), P. eucalyptorum on leaves of Eucalyptus (Australia), P. grevilleae on leaves of Grevillea (Australia), P. nullicananum on leaves of Eucalyptus (Australia), Pseudoanungitea syzygii on Syzygium cordatum leaf litter (South Africa), and Setophaeosphaeria sidae on leaves of Sida sp. (Brazil). New records include: Sphaerellopsis paraphysata on leaves of Phragmites sp., Vermiculariopsiella dichapetali on leaves of Melaleuca sp. and Eucalyptus regnans, and Xyladictyochaeta lusitanica on leaf litter of Eucalyptus sp. (Australia); Camarosporidiella mackenziei on twigs of Caragana sp. (Finland); Cyclothyriella rubronotata on twigs of Ailanthus altissima, Rhinocladiella quercus on Sorbus aucuparia branches (Germany); Cytospora viticola on stems of Vitis vinifera (Hungary); Echinocatena arthrinioides on leaves of Acacia crassicarpa (Malaysia); Varicosporellopsis aquatilis from garden soil (Netherlands); Pestalotiopsis hollandica on needles of Cupressus sempervirens (Spain), Pseudocamarosporium africanum on twigs of Erica sp. (South Africa), Pseudocamarosporium brabeji on branch of Platanus sp. (Switzerland); Neocucurbitaria cava on leaves of Quercus ilex (UK); Chaetosphaeria myriocarpa on decaying wood of Carpinus betulus, Haplograhium delicatum on decaying Carpinus betulus wood (Ukraine). Epitypes are designated for: Elsinoë mimosae on leaves of Mimosa diplotricha (Brazil), Neohendersonia kickxii on Fagus sylvatica twig bark (Italy), Caliciopsis maxima on fronds of Niphidium crassifolium (Brazil), Dictyochaeta septata on leaves of Eucalyptus grandis × urophylla (Chile), and Microdochium musae on leaves of Musa sp. (Malaysia).
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Some new records of powdery mildew fungi from Argentina
Article
Full-text available
  • Jun 2001
  • SYDOWIA
Oidium insolitum sp. nov. is described, and several new collections of powdery mildew fungi from Argentina are recorded.
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Parasitic Fungi of Illinois
Article
  • May 2019
The very abundant mycelium consists of numerous slender, white or colorless, septate threads, that branch widely, and extend over the leaf in every direction, frequently crossing and interlacing. These threads are usually pressed close to the host, but they do not themselves enter it. They send out at intervals, however, short special branches called haustoria, that penetrate the epidermal cells, serving for the secure attachment of the fungus, and probably also for its nourishment. These haustoria present several forms, and they are of some importance in the classification of the species. In some cases the haustorium simply consists of a slender tube which penetrates the epidermal cell of the host, within which it swells to an oval or club-shaped sac, filled with granular protoplasm. More often there is an external appendage or sucker, that is pressed close to the surface of the epidermal cell; and from this, or from near it on the mycelial thread, the haustorium proper takes its rise and penetrates the epidermis. This external appendage may be smooth and entire, merely constituting a hemispherical swelling on the mycelial thread; or, it may take the form of a flattened disk with an indented margin. In the latter case they are said to be "lobed," in the former, "not lobed."
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New South African records of Erysiphaceae from the Transvaal II
Article
  • Oct 1985
  • S AFR J BOT
Department of” Botany, University of Pretoria, Pretori 0002 Republic of South Africa
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Severe attack of Microsphaera platani on Platanus orientalis var. cretica in Crete (Greece)
Article
  • Sep 1995
The occurrence of a severe attack of Microsphaera platani on Platanus orientalis and on P. orientalis var. cretica in Crete is reported for the first time.
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