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Bacterial Responses to Extreme Temperatures and Pressures and to Heavy Organic Loading
Final technical rept.
WASHINGTON UNIV SEATTLE
Pagination or Media Count:
The goals of this project centered around two areas of research 1 the study of hyperthermophilic archaebacteria from submarine hydrothermnal vents on the East Pacific Rise and 2 the study of physiologically diverse microbial populations associated with a whale carcass partially buried in sediments of the Santa Catalina Basin. Specific objectives included the following 1 Completion of analyses of all geochemical, biochemical and microbiological measurements made on smoker fluid samples 2 Further characterization of DNA from smoker samples and selected isolates to assess phylogenetic origin 3 Determination of upper temperature and pressure limits for growth and survival of hyperthermophilic archaebacteria 4 Tests for production of thermostable extra-cellular enzymes at extreme conditions 5 Physiological types of bacterial-invertebrate symbioses in the deep sea directly reflect available energy sources and 6 Deep-sea conditions of low temperature and elevated pressure do not limit bacterial responses to intense organic loading.
APPROVED FOR PUBLIC RELEASE