Simulating putative Enceladus-like conditions: The possibility of biological methane production on Saturn’s icy moon

Autor:	Alexander Krajete, Patricia Pappenreiter, Simon K.-M. R. Rittmann, Jennifer Zwicker, Ruth-Sophie Taubner, Christa Schleper, Christian Pruckner, Jörn Peckmann, Sébastien Bernacchi, Philipp Kolar, Christian Paulik, M. G. Firneis, Daniel Smrzka, Arne Seifert, Wolfgang Bach
Rok vydání:	2018
Předmět:	Methanococcus biology Methanogenesis Chemistry Methanothermococcus okinawensis Astronomy and Astrophysics biology.organism_classification Icy moon Astrobiology Space and Planetary Science Methanothermobacter marburgensis Saturn Enceladus Archaea
Zdroj:	Proceedings of the International Astronomical Union. 14:219-221
ISSN:	1743-9221 1743-9213
DOI:	10.1017/s1743921319001789
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::517742d0562ef95f07b88e7517f9a5d7 https://doi.org/10.1017/s1743921319001789 Zobrazit plný text záznamu Plný text ve formátu PDF