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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*
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.)
Address after 1 July 2002: Department of Geological
Sciences and Department of Chemistry and Biochemistry, Arizona State
University, Tempe, AZ 85287, USA
Read the Full Text
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