MIC 102 Lecture Notes - Lecture 19: Ergosterol, Hypha, Sterol
Document Summary
3 major morphological types: multicellular filamentous molds, multicellular filamentous fruting body, yeasts. Ergosterol: similar to cholesterol, primary sterol in fungi, required for fungi plasma membrane. Most fungi are filamentous: years are a major exception. Acts as an etension to plant root. Often form a common mycorrhizal network connecting many species of plants and fungi into a single network. Can be used by plants to pass molecular signal to each other. Ascus: sac with 8 spores one normal meiosis and then other mitotic division for each sore makes 8. Basidium cells form from meiotic former dikaryons. Most yeast can reproduce by asexual budding, like filamentous fungi. Mating type is entirely determined by the expression of one gene. Either a or alpha gene can be copied into the mat expression site where it will be expressed. Can be changed at any time in a cells life.
