01:119:116 Lecture Notes - Lecture 4: Cyanobacteria, Agaricus Bisporus, Decomposer
31 Jan 2017
School
Department
Course
Professor
Document Summary
100,000 species named 5 major groups within fungi. Think: what does the above information mean about the environments that they must: the evolution of fungi. Sister group to the nucleariids: nutrition and ecology. Cell wall contains chitin live in?hy: body structure. Hyphae - tendrils formed: specialized hyphae. Dispersed by wind, h2o, or animals: sexual reproduction. # of mating types depends on # of alleles. Process: hyphae release pheromones & test compatibility, hyphae meet and fuse cytoplasm - plasmogamy form: Heterokaryon - cells contain multiple haploid nuclei (n+n) (special case) dikaryotic mycelium - nuclei pair off, only two nuclei per cell. Fyi: your cells are monokaryons: cells grow and nuclei divide. Karyogamy - nuclei from parents fuse diploid zygote. Molds = filamentous fungi, produce spores by mitosis. Terrestrial, freshwater, and marine: zygomycetes (phylum zygomycota) Flagellated spores - zoospores (unique to chytrids) Spores develop by mitosis n n. Different mating types come together (+ and -)
