Presentation on theme: "Fungal Groups b Ascomycetes b Basidiomycetes b Imperfect Fungi--Deuteromycetes b Zygomycetes."— Presentation transcript:
Fungal Groups b Ascomycetes b Basidiomycetes b Imperfect Fungi--Deuteromycetes b Zygomycetes
Fungus-related terms b Saprobe b Saprophyte b Hyphae b Mycelium b Fruiting body b Chitin b conidia
Fungi b Cellular Characteristics MulticellularMulticellular EukaryoticEukaryotic HeterotrophicHeterotrophic Have cell walls reinforced with chitinHave cell walls reinforced with chitin Usually haploidUsually haploid Diploid only during sexual reproductionDiploid only during sexual reproduction
Basidiomycetes b Examples—mushrooms, rusts, smuts, puffballs b Basidia—club shaped reproductive structure found on the gills. b Mating strains b Fusion b Dikaryotic hyphae b Nuclear fusion b Zygote—diploid b Meiosis b Formation of haploid spores b Germination
Imperfect Fungi b Taxonomic holding station b Scientists have not discovered a sexually reproductive stage in these organisms b Candida and Penicillium were both once categorized in this group.
Fungal Symbiosis b Mycorrhizae—Mutualistic association between tree roots and fungi. Help to increase water absorption. b Lichens—Mutualistic association between fungi and cyanobacteria. Play a role in primary succession.
Fungal Diseases b Ascomycetes Aspergillus—Aspergilloses— allergies; sinus, ear, and lung infections.Aspergillus—Aspergilloses— allergies; sinus, ear, and lung infections. Candida albicans—yeast infections, thrushCandida albicans—yeast infections, thrush Claviceps purpurea—ergotismClaviceps purpurea—ergotism Ophiostoma ulmi—Dutch elm diseaseOphiostoma ulmi—Dutch elm disease Cryphonectria parasitica— Chestnut blightCryphonectria parasitica— Chestnut blight Trichophyton tonsurans – ringwormTrichophyton tonsurans – ringworm Trichophyton mentagrophytes and Trichophyton rubrum --Athlete’s footTrichophyton mentagrophytes and Trichophyton rubrum --Athlete’s foot b Basidiomycetes Amanita—Severe poisoning Ustilago maydis—corn smut Puccinia graminis—Wheat rust