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Creator |
34150f2f89a55de66712a0576f106400 |
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Creator |
7c9060b8651fa54e11ffd46d3aba6da8 |
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Creator |
bd12e480200a0e58504d6106bfed3c8a |
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Creator |
0519c7e3d5b481315278655a3c8c63cf |
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Creator |
95f68b10fb49eec7b7d3b7db9817decc |
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Date |
2018 |
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Is Part Of |
repository |
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abstract |
There is evidence that water may exist on Mars as brines in the subsurface. The chemistries
of these brines will be greatly influenced by the local lithologies, which would impact
on the organisms that could potentially live within them. There are multiple metabolisms
which are theroretically viable under martian chemical conditions. In order to better
establish which of these are capable of supportung growth under martian conditions,
we performed a series of enrichments using four previously developed geological simulants
for Mars: a global composition, an early and unaltered basaltic composition, a sulfur-rich
composition, and a haematite-rich composition.
Enrichments were inoculated with sediment collected from Pyefleet mudflats in the
Colne estuary (Essex, UK), rich in sulphate-reducing bacteria and methanogens. Mudflat
sediment was added to the simulant materials and a brine based on the chemistry of
Rocknest. Enrichments were supplied with a H2/CO2 headspace of at 1 bar pressure and
incubated for twenty days. The enrichments were subcultured into fresh simulant material
and brines in order to effectively select for a community actively growing in this
chemical environment. The enriched community was characterised through the isolation
and identification of microbes, microscopy and the amplicon sequencing of 16S rRNA
genes amplified from DNA extracted from each stage of the enirchment. |
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authorList |
authors |
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presentedAt |
ext-6853df610644f8a983d6f3d337ee5bbc |
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status |
peerReviewed |
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type |
AcademicArticle |
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type |
Article |
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label |
Macey, Michael C. ; Ramkissoon, Nisha K. ; Pearson, Victoria K. ; Schwenzer, Susanne
P. and Olsson-Francis, Karen (2018). Viable metabolisms in a simulated martian
chemical environment. In: AbGradE Symposium 2018, 22-24 Sep 2018, Berlin.
|
| 62328 |
label |
Macey, Michael C. ; Ramkissoon, Nisha K. ; Pearson, Victoria K. ; Schwenzer, Susanne
P. and Olsson-Francis, Karen (2018). Viable metabolisms in a simulated martian
chemical environment. In: AbGradE Symposium 2018, 22-24 Sep 2018, Berlin. |
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Title |
Viable metabolisms in a simulated martian chemical environment |
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in dataset |
oro |