Out of Thin Air? Astrobiology and Atmospheric Chemotrophy

被引：5
|
作者：
Cowan, Don A. [1 ]
Ferrari, Belinda C. [2 ]
McKay, Christopher P. [3 ]
机构：
[1] Univ Pretoria, Dept Biochem Genet & Microbiol, Ctr Microbial Ecol & Genom, Bldg NW2,Room 3-12 Hatfield Campus, ZA-0002 Pretoria, South Africa
[2] UNSW Sydney, Australian Ctr Astrobiol, Sch Biotechnol & Biomol Sci, Randwick, NSW, Australia
[3] NASA Ames Res Ctr, Moffett Field, CA USA
来源：
ASTROBIOLOGY | 2022年 / 22卷 / 02期
基金：
澳大利亚研究理事会;
关键词：
Astrobiology; Mars; Titan; Trace gas; Chemotrophy; Redox couple; MOLECULAR-HYDROGEN; ENERGY-SOURCE; HIGH-AFFINITY; SURFACE; LIFE; H-2; METHANE; MARS; CO; ENCELADUS;
D O I：
10.1089/ast.2021.0066
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The emerging understanding of microbial trace gas chemotrophy as a metabolic strategy to support energy and carbon acquisition for microbial survival and growth has significant implications in the search for past, and even extant, life beyond Earth. The use of trace gases, including hydrogen and carbon monoxide as substrates for microbial oxidation, potentially offers a viable strategy with which to support life on planetary bodies that possess a suitable atmospheric composition, such as Mars and Titan. Here, we discuss the current state of knowledge of this process and explore its potential in the field of astrobiological exploration.
引用
收藏
页码：225 / 232
页数：8
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