Summary
Samenvatting Deel Mycologie (microbiologie P. Cos 3e Ba DGK UA)
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Deel Mycologie microbiologie P. Cos 3e Ba DGK UA: mycologie volledig samengevat/uitgewerkt
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Mycologie< eukarya want cellen hebben celkern
Structuur van fungi
Fungale thallus = lichaam bestaat uit hyphae ‘hyfen’
o Vegetatieve hyphae: voeden
o Aeriale hyphae: reproductie
Coenocytisch = geen septa tss cellen
Septate = met septa tss cellen
Structuur van gisten
Unicellulair ovaal tot rond (3-15 μm)
Facultatief anaeroob
Fission gisten delen symmetrisch vb Schizosaccharomyces spp
Budding gisten delen asymmetrisch vb Saccharomyces spp
o bud = knob = blastospore
o als de knob niet volledig afscheurd pseudohyphae
structuur dimorfe fungi
kunnen groeien als fungus of als gist
weinig species zijn dimorf
afh van omgevingsfactoren: T°, CO2 en voedingsstoffen
(thermale) dimorfisme in pathogene fungi:
37°C gist
25°C fungus
Subcellulaire structuur
Capsula: polysacchariden = bescherming tegen fagocytose
Celwand
Celmembraan
Cytoplasma: celkern + kernmembraan, ER, mitochondria, vacuoles
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, Levenscyclus
Filamenteuze fungi: aseksueel via fragmentatie van de hyphae
Fungale sporen van aeriale hyphae
o Aseksuele sporen
Conidiospoor: spoor niet verpakt in zakje vb Aspergillus spp.
Chlamydospoor: spoor met dikke wand vb Candida albicans
Sporangiospoor: aseksuele spoor verpakt in een zakje = sporangium vb Rhizopus
Macro- & microconidia: typisch voor dermatofyten
o Seksuele sporen
Gevormd door fusie van de nuclei van verschillende haploïde gameten
Aseksuele sporen
Conidiosporen
Arthroconidia/arthrosporen: fragmentatie van gesegmenteerde hyphae vb Coccidioidis immitis
Blastoconidia/blastosporen: afscheiding van knobs van de moedercel vb candida, cryptococcus
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