Lecture_1_Table_1

Lecture_1_Table_1 - cytoplasm vacuoles non-differentiated...

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II. Table 1: Microbes in the Environment Division Phylogenetic Domain Organism Habitat, diameter Characteristics Importance Prokaryotes virus (plant, animal, bacterial) Hosts; 0.25 μ m (varies) Not cellular, RNA or DNA+capsid, can’t replicate outside living cells Genetic exchange,disease Bacteria bacteria Terrestrial, aquatic, aerial, plant surfaces, in other organisms; 1 μ m typ. up to 50 μ m Unicellular, most with cell wall, cytoplasmic membrane, ribosomes, inclusions, nucleoid, diverse physiological functions. Bacteria and Archaea differ in cell wall and lipid chemistry, transcriptional and protein synthesis Biogeochemical cycling, biodegradation, disease, biotechnology, photosynthesis (cyanobacteria oxygenating the earth) Archaea (bacteria) Hot springs, alkaline or acidic environs; 1 μ m typ. Biogeochemical cycling (e.g., methanogenesis) Eucaryotes Eucarya fungi (molds=filamen- tous, yeasts, mushrooms) Some aquatic (marine + fresh), most terrestrial (soil or plants); > 5 μ m nonmotile, cell wall, streaming
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Unformatted text preview: cytoplasm, vacuoles, non-differentiated, no chlorophyll, diverse morphology and sexual cycles but not phylogenetically Decomposition, biotechnology slime molds decaying plant matter; > 1 μ m Plasmodia or cellular, feed on other microbes grazing protozoa Freeliving in aquatic (marine + fresh), or soils, and in gut; 20-80 μ m Unicellular, no cell walls, motile, no fruiting body, no chlorophyll, ingest microbes or particulates grazing, disease, hosts (cyanobacteria, algae, bacteria) algae aquatic (marine + fresh), soils; > 1 μ m photosynthesize to make oxygen, uni- or multicellular primary production (aquatic = phytoplankton) plant-microbe interactions a. lichen, b. mycorrhiza c. root nodules a. plant, rock sufaces, soils b.-c. rhizosphere; a. fungus-algae or cyanobacteria, b. fungus-root c. bacteria-root a. mutual: phycobiont is primary producer & / or fixes N 2 , mycobiont protects & supplies minerals b. P, N 2 to plant c. N 2 fixing...
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