01:119:101 Lecture Notes - Lecture 2: Basidium, Karyogamy, Cyanobacteria
25 Feb 2016
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Document Summary
Absorb nutrients from nonliving organic material: parasites. Absorb nutrients from the cells of living hosts ex. Absorb nutrients from host, but reciprocate with actions that benefit the host: have cell wall comprised of chitin, nitrogen containing polysaccharide. 2: gram positive peptidoglycan, gram negative peptidoglycan and lpa, plants cellulose. Body structure: main types, multicellular filaments, single-celled such as yeasts, multicellular, hypha(e) basic building block of fungus body. Tubular cell wall surrounds plasma membrane and cytoplasm. Allows expansion into food resources: types of hyphae, septate. No individual cells, one big cell with hundreds of nuclei: mycelium. Tangled mass of hyphae: reproductive structures, spores. Fruiting body aka mushroom: specialized hyphae, some are used for feeding on living animals, haustoria. Used to extract nutrients from, or exchange nutrients with, plant hostsmycorrhizae mutually beneficial relationships between fungi and plant roots i. Fungi deliver phosphate ions and minerals to plants they need for growth ii.
