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Biogeosciences An interactive open-access journal of the European Geosciences Union
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BG | Volume 16, issue 8
Biogeosciences, 16, 1817–1828, 2019
https://doi.org/10.5194/bg-16-1817-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Biogeosciences, 16, 1817–1828, 2019
https://doi.org/10.5194/bg-16-1817-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Ideas and perspectives 29 Apr 2019

Ideas and perspectives | 29 Apr 2019

Ideas and perspectives: Development of nascent autotrophic carbon fixation systems in various redox conditions of the fluid degassing on early Earth

Sergey A. Marakushev and Ol'ga V. Belonogova
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Among the existing theories of the autotrophic origin of life, CO2 is usually considered to be the carbon source for nascent autotrophic metabolism. However, ancestral carbon used in metabolism may have been derived from CH4 if the outflow of magma fluid to the surface of the Earth consisted mainly of methane. The hydrothermal system model is considered in the form of a phase diagram, which demonstrates the area of redox and P and T conditions favorable to development of primary methanotroph.
Among the existing theories of the autotrophic origin of life, CO2 is usually considered to be...
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