01:119:116 Lecture Notes - Lecture 4: Unikont, Peptidoglycan, Lignin
14 Sep 2018
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General characteristics of fungi: nutrition + ecology, not photosynthetic. Not plants: all heterotrophs require organic nutrients, do not ingest food + digest it inside body. Not animals: absorptive heterotrophs (1) hydrolases. Moist environment (2) main types of resource acquistion material. Parasites- absorb nutrients from cells of living hosts. Mutualists- absorb nutrients from living organism but reciprocate w/ actions that benefit the host: body structure, cell wall, nitrogen containing polysaccharide (strong, flexible, and durable) In contrast b) (1) domain bacteria peptidoglycan (2) plants cellulose: 2 main types of fungi, yeasts single celled fungi, multicellular fungi, structure of molecular fungi, hypha(e) Basic building block, tubular cell wall, secretes hydrolases, expands into food resources: mycelium(lia)- tangled mass, feeding network, specialized hyphae (1) some fungi feed on living animals (2) some fungi have haustoria. Extract nutrients from or exchange nutrients w/ plant host. Fungi more efficient than plant roots at getting soil. Plants supply fungi w/ organic nutrients such as.
