Simulating putative Enceladus-like conditions

Autor(en)
Ruth-Sophie Taubner, Patricia Pappenreiter, Jennifer Zwicker, Daniel Smrzka, Christian Pruckner, Philipp Kolar, Sebastian Bernacchi, Arne H Seifert, Wolfgang Bach, Jörn Peckmann, Christian Paulik, Maria Gertrude Firneis, Christa Schleper, Simon Karl-Maria Rasso Rittmann
Abstrakt

In this study (Taubner et al. 2018), three different methanogenic archaea (Methanothermococcus okinawensis, Methanothermobacter marburgensis, and Methanococcus villosus) were tested for metabolic activities and growth under putative Enceladus-like conditions, including high pressure experiments and tests on the tolerance towards potential gaseous and liquid inhibitors detected in Enceladus' plume. In particular, M. okinawensis, an isolate from a deep marine trench (Takai et al. 2002), showed tolerance towards all of the added inhibitors and maintained methanogenesis even in the range of 10 to 50 bar. Further, we were able to show that H2 production based on serpentinization may be sufficient to fuel such methanogenic life on Enceladus. The experiments revealed that methanogenesis could, in principle, be feasible under Enceladus-like conditions.

Organisation(en)
Department für Funktionelle und Evolutionäre Ökologie, Institut für Geologie, Institut für Astrophysik
Externe Organisation(en)
Johannes Kepler Universität Linz, Krajete GmbH, Austria, Universität Bremen, Universität Hamburg, Universität Wien
Journal
Proceedings of the International Astronomical Union
Band
14
Seiten
219-221
Anzahl der Seiten
3
ISSN
1743-9213
DOI
https://doi.org/10.1017/S1743921319001789
Publikationsdatum
01-2019
Peer-reviewed
Ja
ÖFOS 2012
103003 Astronomie, 103004 Astrophysik, 106022 Mikrobiologie
Schlagwörter
ASJC Scopus Sachgebiete
Public Health, Environmental and Occupational Health, Astronomy and Astrophysics, Nutrition and Dietetics, Medicine (miscellaneous), Space and Planetary Science
Link zum Portal
https://ucris.univie.ac.at/portal/de/publications/simulating-putative-enceladuslike-conditions(3640be79-5774-433b-8430-d99103c49246).html