Phylum ascomycota orders erysiphales laboulbeniales
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Phylum Ascomycota Orders Erysiphales Laboulbeniales

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Phylum AscomycotaOrders Erysiphales & Laboulbeniales

Mycology (4032605)

Lecture 7

.. 404552003

.. 404552013

11


Pyrenomycetes

Plectomycetes (Eurotiales)

Chaetothyriales

Loculoascomycetes 1

Loculoascomycetes 2

Filamentous ascomycetes

Inoperculate discomycetes

Lecanoralean discomycetes

Operculate discomycetes

Erysiphales (powdery mildews)

Laboulbeniales

Saccharomycetales

Archiascomycetes

Basidiomycota


Erysiphales

  • = Powdery Mildews

  • Biotrophs of vascular plants

    • Biotroph:

    • 21 , 437 40,000 ()


Powdery Mildew Symptoms

Photo by Claudia Nitschwitz


    • appressoria

  • haustoria

    • Haustoria

  • Overwinter

  • cleistothecia


appressorium

Plasma membrane

Penetration peg

haustorium

Host cytoplasm

Plasma membrane

Plant cell wall

fungus


  • , hyaline conidiophores superficial mycelium;

  • 1, hyaline holoblastically basipetal chains

  • 1 30,000


  • Wind-dispersed

  • , appressorium

  • haustorium


Ovulariopsis

Oidium type anamorph

Oidiopsis

Streptopodium

Fibrosin bodies

From Braun, 1987


Microsphaera alni anamorph on Vaccinium


  • Cleistothecia superficial mycelium

    • basal layer

    • Globose pyriform


/

  • asci/cleistothecium 1

  • Ascospores hyaline, 1,

  • 1-8 ascospores/ascus

  • asci/cleistothecium


  • Anamorph

  • asci/ascocarp

  • Cleistothecial

  • Mycelioid

    • Rigid

      • Spear-like

      • dichotomously


Microsphaera alni cleistothecia


Sawadea bicornis cleistothecia


Sawadea bicornis cleistothecial appendages


Blumeria

  • B. graminis--

  • Mycelial setae

  • Digitate haustoria

  • Several asci/ascocarp

  • conidiophore


Mycelioid

  • asci/ascocarp :

    • Eryisiphe (100 spp)

      • Oidium anamorph

    • Leveillula (8 spp.)

      • mycelium

      • Oidiopsis anamorph ()

  • One ascus/ascocarp:

    • Sphaerotheca (50 spp.)

      • Oidium anamorph fibrosin bodies


Dichotomously

  • 1 ascus/ascocarp:

    • Podosphaeria (12 spp.)

      • Oidium anamorph fibrosin bodies

  • asci/ascocarp :

    • Microsphaera (125 spp.)

      • Oidium anamorph

    • Sawadaea (6 spp.)

      • Oidium anamorph fibrosin bodies


Spear-like --Phyllactinia

  • 24

  • ascocarp

  • ascocarp

  • OvulariopsisStreptopodium anamorphs


  • Uncinula (81 spp)

    • Oidium anamorph

    • asci/ascocarp

  • Uncinuliella

    • bristle-like ascocarp


  • Phylogeny ITS rDNA 6 ascocarp (Saenz & Taylor 1999, Can. J. Botany 77:150-168)


Ovulariopsis

Oidium type anamorph

Oidiopsis

Streptopodium

Fibrosin bodies

From Braun, 1987


Laboulbeniales

  • 5 , 140 , > 1800

  • 4/5 , thallus


Laboulbeniales (cont.)

  • , 1 arthropod

  • Roland Thaxter (1858-1932) Farlow ,

    • Laboulbeniales ( 1896-1931)


Roland Thaxter


From "Contributions towards a monograph of the Laboulbeniaceae"


Hosts of Laboulbeniales. From Meredith Blackwells web page:

http://lsb380.plbio.lsu.edu/Netscape.comp.laboul.page


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