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Rick Davis, Oregon Health & Science University

Sequencing the uncultured: New insights in the mechanisms of microbial carbon fixation and manganese oxidation at hydrothermal vents

Thursday, May 9, 2013 3:30 PM - 4:30 PM

Sequencing the uncultured: New insights in the mechanisms of microbial carbon fixation and manganese oxidation at hydrothermal vents:  Our knowledge of the mechanisms of carbon fixation and metal oxidation in the natural environment is largely limited by our inability to culture representative microbes for physiological and genetic characterization. Recent advances in next-generation sequencing technology has allowed microbial ecologists to construct and analyze genomic libraries of environmental samples, allowing direct analysis of genomes of uncultured microbes. We have constructed and analyzed genomic libraries from metal oxide-encrusted microbial communities from three different hydrothermal vent systems and identified major carbon fixation and metal oxidation pathways in the organisms that live there. This gives us culture-independent insights into the major metabolic pathways and phylogeny of microbial populations in these communities which should help us understand the dynamics of chemoautotrophic primary production and energy utilization at these hydrothermal ecosystems.


Hatfield Marine Science Center, Newport
Guin Library Seminar Room
Bill Chadwick
7-0179
bill.chadwick at oregonstate.edu
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