Sustainability of Extreme Microbial Ecosystems to the Comprehensive Impact of Physical Factors of the Martian Regolith
- 作者: Cheptsov V.S.1,2, Vorobyova E.A.1,2, Polyanskaya L.M.1, Gorlenko M.V.1, Pavlov A.K.3, Lomasov V.N.4
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隶属关系:
- Department of Soil Science
- Space Research Institute
- Ioffe Physical-Technical Institute
- Peter the Great St. Petersburg Polytechnic University
- 期: 卷 73, 编号 3 (2018)
- 页面: 119-123
- 栏目: Soil Biology
- URL: https://journals.rcsi.science/0147-6874/article/view/174705
- DOI: https://doi.org/10.3103/S0147687418030043
- ID: 174705
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详细
As the key parameters of the Martian regolith, we have studied the combined effect of gamma radiation (1 and 10 kGy), low temperature (–50°C), and low pressure (1 Torr) on the microbial communities of extreme ecotopes of Earth to estimate the duration of cryopreservation of hypothetical Martian ecosystems in a viable state. The obtained data suggest that cryopreservation of viable microorganisms in the surface layer of the regolith is possible for at least 130000 years; at a depth of 30 cm, for 170000 years; at a depth of 2 m (the depth which the ExoMars 2020 mission must reach), for 330000 years; and at a depth of 5 m, for 2 million years.
作者简介
V. Cheptsov
Department of Soil Science; Space Research Institute
编辑信件的主要联系方式.
Email: cheptcov.vladimir@gmail.com
俄罗斯联邦, Moscow, 119991; Moscow, 117997
E. Vorobyova
Department of Soil Science; Space Research Institute
Email: cheptcov.vladimir@gmail.com
俄罗斯联邦, Moscow, 119991; Moscow, 117997
L. Polyanskaya
Department of Soil Science
Email: cheptcov.vladimir@gmail.com
俄罗斯联邦, Moscow, 119991
M. Gorlenko
Department of Soil Science
Email: cheptcov.vladimir@gmail.com
俄罗斯联邦, Moscow, 119991
A. Pavlov
Ioffe Physical-Technical Institute
Email: cheptcov.vladimir@gmail.com
俄罗斯联邦, St. Petersburg, 194021
V. Lomasov
Peter the Great St. Petersburg Polytechnic University
Email: cheptcov.vladimir@gmail.com
俄罗斯联邦, St. Petersburg, 195251
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