FUNGI NOTES - and fuse. Plasmogamy fusion leads to the...

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Hyphae – fungi roots(absorb nutrients) Haustoria – extract nutrients or exchange them with fungi’s host. Mycorrhizae – mutually beneficial relationship btw fungi and plant roots. Mycelium – large concentrated area of hyphae Septa (septum ) – walls in between the cells of fungi. Have holes that allow movement of ribosome, mitochondria, and even nuclei to flow btw cells. Coenocytic Fungi – fungi that lack septa! Due2 division of nuclei w/o cytokinesis. Ectomycorrhizal fungi – hyphae over the surface of the roots and into the root cortex Arbuscular mycorrhizal fungi – extend hyphae through root cell wall and tubes. Sexual - hyphae from 2 mycelia release pheromones. If diff., pheromones bind to receptors on opposite hyphae. Hyphae extend to each other
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Unformatted text preview: and fuse. Plasmogamy fusion leads to the sharing of cytoplasm, nuclei dont fuse spontaneously. Nuclei coexist separately. ( Heterokaryon ) In some species, haploid nuclei pair up by 2 into a cell = Dikaryotic . Haploid nuclei divide Asexual can asexually reproduce through molds and single celled yeasts. (cell division) . No sexual states. Karyogamy fusion of nuclei (haploid) = diploid nuclei, meiosis then makes diploids again. Chytrids ubiquitous in lakes and soil. Decomposers while others are parasites of protists, other fungi plants or animals. Zoospores flagellated spores obtained by chytrids....
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This note was uploaded on 10/18/2011 for the course BIO 1103 taught by Professor Brickman during the Spring '08 term at University of Georgia Athens.

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