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39 --Life in Extreme Environments
TUESDAY, April 15, 2008: Morning
Beth Orcutt
University of Southern California, USA
Katrina Edwards
University of Southern California, USA
Description
Modern "extreme" environments serve as model system analogues for understanding life on early Earth as well as its potential on other worlds. Determining the molecular, genetic, and biochemical mechanisms that enable life to survive and thrive in extremes of redox, acidity, radiation, temperature, and substrate and water limitation, provides a critical foundation for predicting the probability of habitability of past and distant environments. This session will highlight advances in our understanding of the diversity and strategies of life in extreme environments.
ORAL SESSION
9:45 39-09-O. Model Environment for Early Earth Hosts Microbial Oasis
M.R. de Sousa Antonio, D. Finkelstein, D. Rollo, L. Pratt, C. Bauer
10:00 39-05-O. Subseafloor Archaeal Communities at Deep-Sea Hydrothermal
Seamounts J. Huber, D.M. Welch, H.G. Morrison, S.M. Huse, P.R. Neal, D.A. Butterfield,
M.L. Sogin
10:15 39-08-O. Life in the Crust of the Ocean: Exceptional Microbial Diversity Supported
by Lithotrophic Alteration Reactions of Ocean Crust Basalts [invited]
B. Orcutt, C. Santelli, E. Banning, W. Bach, M. Sogin, K. Edwards
10:30 39-12-O. Structural and Compositional Elements of Biofilms in Hot, Hydrothermal
Environments [invited] M. Schrenk, D.R.M. Dombard
10;45 BREAK
11:00 39-01-O. Microbial Community Structures in the Extreme Rio Tinto, a Terrestrial
Analog for Mars L. Amaral-Zettler, S. Theroux, E. Zettler, C. Palacios, R. Amils
11:15 39-10-O. Molecular Biosignatures of Life on the Edge
M. Rhodes, S. Fitz-Gibbon, A. Oren, C. House
11:30 39-04-O. The Andean Timberline of Tierra del Fuego as an Extreme Environment
H. D'Antoni, L. Rothschild, C. Schultz, S. Burgess, D. Rogoff, J.W. Skiles, J. Zamora
11:45 39-13-O. Time Lapse Digital Photography in Astrobiological Research and
Education H.D. Their, K. Cuff
POSTERS
39-02-P. Hot Science! Middle School Science at the Extreme
M. Brelsford, S. Kelly
39-03-P: Sulfolobus Heat-Shock Protein Complex Stability: A Biophysics Study
M. Ceballos, J. Chief Elk, A. Baig, C. Marceau, N. Jefferson, W. Smiley, M. Ceballos
39-06-P. Education and Outreach at the Thermal Biology Institute
S. Kelly, M. Brelsford
39-07-P. The Black Sea as an Analog of Early Earth—and Microbial Evolution?
J. Kirkpatrick, C. Fuchsman, J.T. Staley, J.W. Murray
39-11-P. Natural Microbial Exopolymers: Ice Affinity and Consequent Habitat Alteration
in Cold Saline Ice Formations
M.E. Sarmiento, J.W. Deming