浙江大学医学院：医学真菌学（PPT讲稿）medical mycology

医学真菌学 (medical mycology

医学真菌学 （medical mycology）

Comparison of fungi and bacteria Feature Fung Bacteria diameter 4 um pm nucleus eukaryotic prokaryotic cytoplasm with mitochondria and without mitochondria and endoplasmic reticulum endoplasmic reticulum Cell membrane sterol present sterol absent Cell wall chitin peptidoglycan spores sexual and asexual spore for survival, not for spore for proliferation proliferation dimorphism yes No metabolism Require organic carbon May do not require organic and no anaerobes carbon and maybe anaerobes

Comparison of fungi and bacteria Feature Fungi Bacteria diameter 4 µ m 1 µ m nucleus eukaryotic prokaryotic cytoplasm with mitochondria and endoplasmic reticulum without mitochondria and endoplasmic reticulum Cell membrane sterol present sterol absent Cell wall chitin peptidoglycan spores sexual and asexual spore for proliferation spore for survival, not for proliferation dimorphism yes No metabolism Require organic carbon and no anaerobes May do not require organic carbon and maybe anaerobes

Role of fungi in nature There are approximately 70,000 recognized species of fungi Most are beneficial to humankind production of food antibiotics and immunosuppressive drugs used as model systems in molecular biology

Role of fungi in nature • There are approximately 70,000 recognized species of fungi. • Most are beneficial to humankind. – production of food – antibiotics and immunosuppressive drugs – used as model systems in molecular biology

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合乳

Medical Mycology the subject on pathogenic fungi Some fungi act as the plant and animal pathogens in the agricultural industry. About 300 species of fungi cause human infections

Medical Mycology • the subject on pathogenic fungi – Some fungi act as the plant and animal pathogens in the agricultural industry. – About 300 species of fungi cause human infections

Cellular Morphology A pathogenic fungi can exist either as yeasts(酵母菌) or as mold(霉菌)

Cellular Morphology • A pathogenic fungi can exist either as yeasts（酵母菌） or as mold (霉菌)

Yeasts Yeasts are unicellular organisms without hyphae

Yeasts • Yeasts are unicellular organisms without hyphae