Establishment and metabolic analysis of a model microbial community for understanding trophic and electron accepting interactions of subsurface anaerobic environments |
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Authors: | Lance D Miller Jennifer J Mosher Amudhan Venkateswaran Zamin K Yang Anthony V Palumbo Tommy J Phelps Mircea Podar Christopher W Schadt Martin Keller |
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Affiliation: | (1) Biosciences and Environmental Sciences Division, Oak Ridge National Laboratory, 37831 Oak Ridge, TN, USA;(2) Virtual Institute for Microbial Stress and Survival, MS 977-152, LBNL One Cyclotron Road, 94720 Berkeley, CA, USA |
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Abstract: | Background Communities of microorganisms control the rates of key biogeochemical cycles, and are important for biotechnology, bioremediation, and industrial microbiological processes. For this reason, we constructed a model microbial community comprised of three species dependent on trophic interactions. The three species microbial community was comprised of Clostridium cellulolyticum, Desulfovibrio vulgaris Hildenborough, and Geobacter sulfurreducens and was grown under continuous culture conditions. Cellobiose served as the carbon and energy source for C. cellulolyticum, whereas D. vulgaris and G. sulfurreducens derived carbon and energy from the metabolic products of cellobiose fermentation and were provided with sulfate and fumarate respectively as electron acceptors. |
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