01:119:116 Lecture Notes - Lecture 4: Nucleariida, Pseudopodia, Sister Group
6 Feb 2018
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Lecture 4: fungi: the evolution of fungi, origin of fungi. Have flagella or are amoeba: amoebozoans: lobe-shaped or tube shaped pseudopodia, opisthokonts. Sister group to the nucleariids: colonization of land. 100,000 species named 5 major groups within the fungi. General characteristics of fungi: nutrition and ecology. Hydrolases: cell wall contains chitin, body structure. Fungi can be either : single cell= yeasts only. Or: multicellular (many cells), mycelium (pl. mycelia): fungal body, grows in and around food source, hyphae: long branched filaments, specialized hyphae. But can be: predatory, mutualistic (help some other species and those species help fungus back too) like the haustoria found in mycorrhizae, reproductive. Fruiting bodies- multicellular, complex; ex. mushrooms (this is much larger than aerial hyphae) Fungal reproduction: spores (next generation of fungus, this is not seed!) Dispersed by wind, water, and animals: sexual. # of mating types depends on # of alleles. Basic sexual life-cycle (n: two haploid (n) fungi.
