BIO 2137 Lecture Notes - Lecture 3: Enterococcus, Mycoplasma, Archaea
17 Jul 2014
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Keywords: domain bacteria: bacteria, archea, eukarya, bacteria importance, problem bacteria. Adriamycin rifamycin: nitrogen fixing, bacteria pathogens (agrobacterium) Bacterial diseases: aster yellow (mycoplasma), crown gall: characteristics: bacilli, coccus, spirilla, gram +/, trophs: hetero, chemo, photo (2 groups, bacterial photosynthesis, cyano photosynthesis, cyano bacteria: stromatolites, slime. First prokaryotes appear 3. 5 billion years b. p. in australian fossils. Not much life, no oxygen, methane in the air. Domain bacteria (eubacteria: bacteria, archea: extremophiles, completely different bacteria, eukarya: higher animals and plants. Importance of bacteria: most successful organisms on earth (total biomass, species, occupied habitats, especially: problem bacteria, polyene drugs from streptomyces, nitrogen fixing bacteria, bacterial pathogens (agriculture) Heart worm, river blindness amphotericin antifungal rapamycin adramycin. Nitrogen fixing bacteria: only bacteria capable of converting atmospheric n2 (inert) to organic n, found in soils and in plant roots of legume family (soy beans, peas, alfalfa) *penicillin: prevents formation of cell wall (no peptidoglycan)
