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Science 10 May 2002:
Vol. 296. no. 5570, pp. 1077 - 1082
DOI: 10.1126/science.1072483
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Review

Merging Genomes with Geochemistry in Hydrothermal Ecosystems

Anna-Louise Reysenbach,1* Everett Shock2*dagger

Thermophilic microbial inhabitants of active seafloor and continental hot springs populate the deepest branches of the universal phylogenetic tree, making hydrothermal ecosystems the most ancient continuously inhabited ecosystems on Earth. Geochemical consequences of hot water-rock interactions render these environments habitable and supply a diverse array of energy sources. Clues to the strategies for how life thrives in these dynamic ecosystems are beginning to be elucidated through a confluence of biogeochemistry, microbiology, ecology, molecular biology, and genomics. These efforts have the potential to reveal how ecosystems originate, the extent of the subsurface biosphere, and the driving forces of evolution.

1 Department of Biology, Portland State University, Portland, OR 97201, USA.
2 Group Exploring Organic Processes in Geochemistry, Department of Earth and Planetary Sciences, Washington University, St. Louis, MO 63130, USA.
*   To whom correspondence should be addressed. E-mail: reysenbacha{at}pdx.edu (A.-L.R); shock{at}zonvark.wustl.edu (E.S.)

dagger    Address after 1 July 2002: Department of Geological Sciences and Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ 85287, USA

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