BIOL 4250 Lecture Notes - Lecture 8: Asexual Reproduction, Saccharomyces Cerevisiae, Hyphomycetes
30 Dec 2019
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Some have impacted history while others still impact lives every day. Many ascomycota are plant pathogens and it is important that we diagnose them. Greater flexibility in dispersal (wind and rain) Enhanced survival: propagules are more resilient and reproduction can occur without an opposite mating type. Holomorph: a fungus that includes both anamorphs and teleomorph. Spores are grouped together but not enclosed = hyphomycete. Spores are formed in an enclosed structure = coelomycete. Conidia: nonmotile, asexual propagule/spores that are dispersed by wind, water and insects. They vary in shape, color (hyaline or pigmented) and septation. Conidiogenous cells (phialides): cells from which a conidium is formed. Conidiophore: specialized hypha that produces a conidiogenous cell (the stalk) Sclerotia: hardened masses of hyphae used as a resing structure when the fungus is exposed to adverse conditions. The body or thallus can be: yeast-like, filamentous, or dimorphic ( yeast and filamentous) Hyphae: regularly septate, chitin cell walls and septal pores (woronin bodies)
