2004 Annual Science Report
Pennsylvania State University Reporting | JUL 2003 – JUN 2004
Laboratory Microbial Simulations: Astrobiological Signatures
Project Progress
This last year saw significant progress on several related projects. We set up five microbial microcosisms related to the early Earth. We are now evaluating their biogeochemistry. We also submitted a paper to the American Journal of Science that uses genomics to explore the history of biogeochemistry. In particular, it explores carbon isotopic fractionation and trace metal usage through time. We also submitted a paper that explores trace methane oxidation in six different archaeal species. In this paper, we present evidence that these species can not couple methane oxidation to the reduction of typical oxidants, that the Archaeoglobales can not oxidize methane, and that methanol may be an intermediate product of methane oxidation in Methanosarcina.
-
PROJECT INVESTIGATORS:
-
PROJECT MEMBERS:
Christopher House
Project Investigator
Zhidan Zhang
Research Staff
Jennifer Biddle
Doctoral Student
Vyllinniskii Cameron
Doctoral Student
Jim Moran
Doctoral Student
Aubrey Zerkle
Doctoral Student
-
RELATED OBJECTIVES:
Objective 4.1
Earth's early biosphere
Objective 5.2
Co-evolution of microbial communities
Objective 5.3
Biochemical adaptation to extreme environments
Objective 7.2
Biosignatures to be sought in nearby planetary systems