MICR 2420 Lecture Notes - Lecture 3: Pyrococcus Furiosus, Sulfate-Reducing Microorganisms, Ferroplasma
2 Dec 2018
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Document Summary
Archaea look like bacteria but they are not bacteria. Although they can be found in many different environments, many species live under extreme. They are as closely related to bacteria as we are! conditions (extremophiles) Overall, they grow within a wider range of temperature and other environmental conditions than either bacteria or eukaryotes. Pyrococcus furiosus: a thermophile as well as a barophile. Can survive temps over 70c (prefers 100c) An anaerobe that metabolizes sulfur to h2s. Hyperthermophiles like temps > 90c; are almost always archaea. Thermophiles like temps > 60c; can be bacteria or archaea. Prefer very cold temperatures, depths of lakes etc (deep, permanently cold water) Largely uncultured: anaerobic heterotrophs, sulfate reducers or nitrite-reducing methanotrophs. Likes hypersaline pools and in some extreme salt pools they may be the only form of life. Phototroph that forms fragile sheets that float near the surface of the water. Oxidizes sulfur from fes2 to form h2so4 (which reduces ph of 0)
