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 (Taubneret al.2018), three different methanogenic archaea(Methanothermococcus okinawensis,Methanothermobacter marburgensis,andMethanococcusvillosus) were tested for metabolic activities and growth under putative Enceladus-like condi-tions, including high pressure experiments and tests on the tolerance towards potential gaseousand liquid inhibitors detected in Enceladus’ plume. In particular,M. okinawensis, an isolate froma deep marine trench (Takaiet al.2002), showed tolerance towards all of the added inhibitorsand maintained methanogenesis even in the range of 10 to 50 bar. Further, we were able toshow that H2production based on serpentinization may be sufficient to fuel such methanogeniclife on Enceladus. The experiments revealed that methanogenesis could, in principle, be feasibleunder Enceladus-like conditions.

Organisation(en)
Department für Funktionelle und Evolutionäre Ökologie, Department für Geodynamik und Sedimentologie, Institut für Astrophysik
Externe Organisation(en)
Johannes Kepler Universität Linz, Krajete GmbH, Austria, Universität Bremen, Universität Hamburg, Universität Wien
Seiten
219-221
Anzahl der Seiten
3
DOI
https://doi.org/10.1017/S1743921319001789
Publikationsdatum
01-2019
Peer-reviewed
Ja
ÖFOS 2012
103003 Astronomie, 106022 Mikrobiologie
Link zum Portal
https://ucris.univie.ac.at/portal/de/publications/simulating-putative-enceladuslike-conditions(3640be79-5774-433b-8430-d99103c49246).html