common fungal spores
DESCRIPTION
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 PresentationTRANSCRIPT
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Common Fungal SporesCommon Fungal Spores
Estelle Levetin, PhD
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Fungal Spore Characteristics
• Spore size
• Spore shape
• Number of cells
• Attachment Scars
• Wall characteristics
• Spore color
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Spore Size, Shape, and Septation
• SIZE: 2m to 100 mm• SHAPE: Globose, elliptical, fusiform,
asymmetric, lemon-shaped, barrel-shaped, curved
• SEPTATION: Non-septate (one cell), single septum, transverse septa, transverse and longitudinal septa, random septa, pseudoseptate
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Other Characteristics
• ATTACHMENTS: Attachment scars, attachment pegs
• APPENDAGES• WALL CHARACTERISTICS: Smooth,
granular, reticulate, spines, warts, wall thickness
• COLOR: Hyaline (colorless) to deeply pigmented
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Globose Barrel-shaped Non-septate Random septa
Lemon-shaped Club-shaped Transverse septa Attachment scars
Elliptical Curved Transverse and Longitudinal septa
Ornaments: spines
Asymmetric and germ pore
Cylindrical Pseudoseptate Appendages
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Spore color
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Asexual Spores
Also known as Deuteromycetes, Fungi Imperfecti (imperfect fungi),
or Mitospores
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Asexual Spores
• Typically the most abundant spores in the atmosphere
• Conidia often formed on specialized hyphae called conidiophores
• Asexual stage of ascomycetes
• Look for attachment scars where the spores were attached to the conidiophore
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Cladosporium
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Note the septum
Cladosporium
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Several species of Cladosporium are common in the atmosphere
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Note the prominent attachment scars on Cladosporium conidia
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Alternaria
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Alternaria
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Curvularia
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Curvularia
Nigrospora
Drechslera
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Drechslera-type spores
• Several genera of fungi have similar cylindrical spores– Drechslera
– Bipolaris
– Exserohilum
– Helminthosporium
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Drechslera-type spores
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Pithomyces
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Note the colorless attachment at the base of Pithomyces spores
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Epicoccum
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Penicillium species
• Produce distinctive conidiophores (spore bearing structures)
• Spores are usually spherical to oval and form in chains
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Aspergillus species• Produce distinctive
conidiophores (spore bearing structures)
• Spores are usually spherical to oval and form in chains
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Penicillium-Aspergillus type spores
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Nigrospora
Nigrospora Culture Air Sample
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Periconia
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Botrytis
Cladosporium
Cercospora
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Polythrincium Peronospora
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Oidium
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Tetraploa
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Torula
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Stemphylium
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Spegazzinia
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Fusarium
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Stachybotrys
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Division Ascomycota
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Ascospores are produced in an ascus. Eight ascospores are found in each ascus
without any attachment scars
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Ascospores are sometimes found in groups of eight in air samples
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Leptosphaeria ascospores
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Chaetomium ascospores
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Pleospora ascospores
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Diatrypella ascospores
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Sporomiella ascospores
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Venturia ascospores
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Many ascospores on a rainy day
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Division Basidiomycota
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Basidiospore
Basidium
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Ganoderma basidiospores
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Agrocybe - type
Coprinus
Other basidiospores that are easy to recognize
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Coprinus and Ganoderma basidiospores
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Psathyrella Psathyrella velutina
Russula
Stropharia
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Lycoperdon Calvatia
Pisolithus Scleroderma
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Rust spores: Puccinia
Puccinia uredospores Puccinia teliospores
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Smut Spores
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Smut Spores
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Myxomycete (slime mold) spores
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Other slime mold spores