Classification of fungus_Dr Hetal

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Published on January 28, 2016

Author: staphylococci

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Classification of Fungus: Classification of Fungus Dr.Hetal Shah 1/28/2016 1 Dr. Hetal S. Shah Classification of fungus : Classification of fungus 1. Depending on cell morphology Yeasts Yeast like fungi Molds Dimorphic fungi 1/28/2016 2 Dr. Hetal S. Shah Yeasts: Yeasts Unicellular fungi Round to oval cells which reproduce by budding On culture - produce smooth, creamy colonies e. g Cryptococcus neoformans (capsulated yeast) & Saccharomyces cerevicae (non pathogenic)   1/28/2016 3 Dr. Hetal S. Shah Yeast like fungi: Yeast like fungi Bud remain attach to mother cells-  elongate- repeated buding to form chain of elonaged cells--- pseudo hyphae . e.g. Candida albicans   1/28/2016 4 Dr. Hetal S. Shah Molds/ Filamentous fungi: Molds/ Filamentous fu ngi Grow as long branching filaments True mycelia Reproduce by formation of different types of spores . Vegetative/ aerial hyphae e.g. Rhizopus , Mucor , penicillium   1/28/2016 5 Dr. Hetal S. Shah Dimorphic fungi: Dimorphic fungi Di = double, morphic = morphology Occur in 2 forms Molds (Filaments) – 25  C (soil) Yeasts – 37  C (in host tissue) Most fungi causing systemic infections are dimorphic: Histoplasma capsulatum Blastomyces dermatidis Coccidioides immitis Paracoccidioides brasiliensis Penicillium marneffei Sporothrix schenkii 1/28/2016 6 Dr. Hetal S. Shah Dimorphic fungus: Dimorphic fungus 1/28/2016 7 Dr. Hetal S. Shah 2.Systemic classification of fungus: 2.Systemic classification of fungus Based on sexual spore formation: Zygomycetes Ascomycetes Basidiomycetes Deuteromycetes (fungi imperfectii ) 1/28/2016 8 Dr. Hetal S. Shah Classification of fungus: Classification of fungus 3 . Based on infection Superficial Cutaneous Subcutaneous Systemic Opportunistic 1/28/2016 9 Dr. Hetal S. Shah Any question?: THANK YOU Any question? . 1/28/2016 10 Dr. Hetal S. Shah

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