common fungal spores

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Common Fungal Spores. Estelle Levetin, PhD. Fungal Spore Characteristics. Spore size Spore shape Number of cells Attachment Scars Wall characteristics Spore color. Spore Size, Shape, and Septation. SIZE : 2 m m to 100 mm - PowerPoint PPT Presentation


  • Common Fungal SporesEstelle Levetin, PhD

  • Fungal Spore Characteristics Spore size Spore shapeNumber of cellsAttachment ScarsWall characteristicsSpore color

  • Spore Size, Shape, and SeptationSIZE: 2mm to 100 mmSHAPE: Globose, elliptical, fusiform, asymmetric, lemon-shaped, barrel-shaped, curvedSEPTATION: Non-septate (one cell), single septum, transverse septa, transverse and longitudinal septa, random septa, pseudoseptate

  • Other CharacteristicsATTACHMENTS: Attachment scars, attachment pegsAPPENDAGESWALL CHARACTERISTICS: Smooth, granular, reticulate, spines, warts, wall thicknessCOLOR: Hyaline (colorless) to deeply pigmented

  • GloboseBarrel-shapedNon-septateRandom septaLemon-shapedClub-shapedTransverse septaAttachment scarsEllipticalCurvedTransverse and Longitudinal septaOrnaments: spinesAsymmetric and germ poreCylindricalPseudoseptateAppendages

  • Spore color

  • Asexual SporesAlso known as Deuteromycetes, Fungi Imperfecti (imperfect fungi), or Mitospores

  • Asexual SporesTypically the most abundant spores in the atmosphereConidia often formed on specialized hyphae called conidiophoresAsexual stage of ascomycetesLook for attachment scars where the spores were attached to the conidiophore

  • Cladosporium

  • Note the septumCladosporium

  • Several species of Cladosporium are common in the atmosphere

  • Note the prominent attachment scars on Cladosporium conidia

  • Alternaria

  • Alternaria

  • Curvularia

  • CurvulariaNigrosporaDrechslera

  • Drechslera-type sporesSeveral genera of fungi have similar cylindrical sporesDrechsleraBipolarisExserohilumHelminthosporium

  • Drechslera-type spores

  • Pithomyces

  • Note the colorless attachment at the base of Pithomyces spores

  • Epicoccum

  • Penicillium speciesProduce distinctive conidiophores (spore bearing structures)Spores are usually spherical to oval and form in chains

  • Aspergillus speciesProduce distinctive conidiophores (spore bearing structures)Spores are usually spherical to oval and form in chains

  • Penicillium-Aspergillus type spores

  • NigrosporaNigrospora CultureAir Sample

  • Periconia

  • Botrytis CladosporiumCercospora

  • PolythrinciumPeronospora

  • Oidium

  • Tetraploa

  • Torula

  • Stemphylium

  • Spegazzinia

  • Fusarium

  • Stachybotrys

  • Division Ascomycota

  • Ascospores are produced in an ascus. Eight ascospores are found in each ascus without any attachment scars

  • Ascospores are sometimes found in groups of eight in air samples

  • Leptosphaeria ascospores

  • Chaetomium ascospores

  • Pleospora ascospores

  • Diatrypella ascospores

  • Sporomiella ascospores

  • Venturia ascospores

  • Many ascospores on a rainy day

  • Division Basidiomycota

  • BasidiosporeBasidium

  • Ganoderma basidiospores

  • Other basidiospores that are easy to recognizeAgrocybe - typeCoprinus

  • Coprinus and Ganoderma basidiospores

  • Psathyrella Psathyrella velutinaRussulaStropharia

  • LycoperdonCalvatiaPisolithusScleroderma

  • Rust spores: PucciniaPuccinia uredosporesPuccinia teliospores

  • Smut Spores

  • Smut Spores

  • Myxomycete (slime mold) spores

  • Other slime mold spores


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