Twenty-Three Species of Hypobarophilic Bacteria Recovered from Diverse Ecosystems Exhibit Growth under Simulated Martian Conditions at 0.7 kPa
Bacterial growth at low pressure is a new research area with implications for predicting microbial activity in clouds and the bulk atmosphere on Earth, and for modeling the forward contamination of planetary surfaces like Mars. Here, we describe experiments on the recovery and identification of 23 s...
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Mary Ann Liebert, Inc.
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ftpubmed:oai:pubmedcentral.nih.gov:4876496 2023-05-15T14:58:35+02:00 Twenty-Three Species of Hypobarophilic Bacteria Recovered from Diverse Ecosystems Exhibit Growth under Simulated Martian Conditions at 0.7 kPa Schuerger, Andrew C. Nicholson, Wayne L. 2016-05-01 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4876496/ http://www.ncbi.nlm.nih.gov/pubmed/27135839 https://doi.org/10.1089/ast.2015.1394 en eng Mary Ann Liebert, Inc. http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4876496/ http://www.ncbi.nlm.nih.gov/pubmed/27135839 http://dx.doi.org/10.1089/ast.2015.1394 Copyright 2016, Mary Ann Liebert, Inc. Research Articles Text 2016 ftpubmed https://doi.org/10.1089/ast.2015.1394 2017-05-07T00:08:23Z Bacterial growth at low pressure is a new research area with implications for predicting microbial activity in clouds and the bulk atmosphere on Earth, and for modeling the forward contamination of planetary surfaces like Mars. Here, we describe experiments on the recovery and identification of 23 species of bacterial hypobarophiles (def., growth under hypobaric conditions of approximately 1–2 kPa) in 11 genera capable of growth at 0.7 kPa. Hypobarophilic bacteria, but not archaea or fungi, were recovered from soil and non-soil ecosystems. The highest numbers of hypobarophiles were recovered from Arctic soil, Siberian permafrost, and human saliva. Isolates were identified through 16S rRNA sequencing to belong to the genera Carnobacterium, Exiguobacterium, Leuconostoc, Paenibacillus, and Trichococcus. The highest population of culturable hypobarophilic bacteria (5.1 × 104 cfu/g) was recovered from Colour Lake soils from Axel Heiberg Island in the Canadian Arctic. In addition, we extend the number of hypobarophilic species in the genus Serratia to six type-strains that include S. ficaria, S. fonticola, S. grimesii, S. liquefaciens, S. plymuthica, and S. quinivorans. Microbial growth at 0.7 kPa suggests that pressure alone will not be growth-limiting on the martian surface or in Earth's atmosphere up to an altitude of 34 km. Key Words: Planetary protection—Simulated martian atmosphere—Piezophile—Habitability—Extremophilic microorganisms. Astrobiology 16, 335–347. Text Arctic Axel Heiberg Island permafrost PubMed Central (PMC) Arctic Axel Heiberg Island ENVELOPE(-91.001,-91.001,79.752,79.752) Heiberg ENVELOPE(13.964,13.964,66.424,66.424) Astrobiology 16 5 335 347 |
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Research Articles |
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Research Articles Schuerger, Andrew C. Nicholson, Wayne L. Twenty-Three Species of Hypobarophilic Bacteria Recovered from Diverse Ecosystems Exhibit Growth under Simulated Martian Conditions at 0.7 kPa |
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Research Articles |
description |
Bacterial growth at low pressure is a new research area with implications for predicting microbial activity in clouds and the bulk atmosphere on Earth, and for modeling the forward contamination of planetary surfaces like Mars. Here, we describe experiments on the recovery and identification of 23 species of bacterial hypobarophiles (def., growth under hypobaric conditions of approximately 1–2 kPa) in 11 genera capable of growth at 0.7 kPa. Hypobarophilic bacteria, but not archaea or fungi, were recovered from soil and non-soil ecosystems. The highest numbers of hypobarophiles were recovered from Arctic soil, Siberian permafrost, and human saliva. Isolates were identified through 16S rRNA sequencing to belong to the genera Carnobacterium, Exiguobacterium, Leuconostoc, Paenibacillus, and Trichococcus. The highest population of culturable hypobarophilic bacteria (5.1 × 104 cfu/g) was recovered from Colour Lake soils from Axel Heiberg Island in the Canadian Arctic. In addition, we extend the number of hypobarophilic species in the genus Serratia to six type-strains that include S. ficaria, S. fonticola, S. grimesii, S. liquefaciens, S. plymuthica, and S. quinivorans. Microbial growth at 0.7 kPa suggests that pressure alone will not be growth-limiting on the martian surface or in Earth's atmosphere up to an altitude of 34 km. Key Words: Planetary protection—Simulated martian atmosphere—Piezophile—Habitability—Extremophilic microorganisms. Astrobiology 16, 335–347. |
format |
Text |
author |
Schuerger, Andrew C. Nicholson, Wayne L. |
author_facet |
Schuerger, Andrew C. Nicholson, Wayne L. |
author_sort |
Schuerger, Andrew C. |
title |
Twenty-Three Species of Hypobarophilic Bacteria Recovered from Diverse Ecosystems Exhibit Growth under Simulated Martian Conditions at 0.7 kPa |
title_short |
Twenty-Three Species of Hypobarophilic Bacteria Recovered from Diverse Ecosystems Exhibit Growth under Simulated Martian Conditions at 0.7 kPa |
title_full |
Twenty-Three Species of Hypobarophilic Bacteria Recovered from Diverse Ecosystems Exhibit Growth under Simulated Martian Conditions at 0.7 kPa |
title_fullStr |
Twenty-Three Species of Hypobarophilic Bacteria Recovered from Diverse Ecosystems Exhibit Growth under Simulated Martian Conditions at 0.7 kPa |
title_full_unstemmed |
Twenty-Three Species of Hypobarophilic Bacteria Recovered from Diverse Ecosystems Exhibit Growth under Simulated Martian Conditions at 0.7 kPa |
title_sort |
twenty-three species of hypobarophilic bacteria recovered from diverse ecosystems exhibit growth under simulated martian conditions at 0.7 kpa |
publisher |
Mary Ann Liebert, Inc. |
publishDate |
2016 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4876496/ http://www.ncbi.nlm.nih.gov/pubmed/27135839 https://doi.org/10.1089/ast.2015.1394 |
long_lat |
ENVELOPE(-91.001,-91.001,79.752,79.752) ENVELOPE(13.964,13.964,66.424,66.424) |
geographic |
Arctic Axel Heiberg Island Heiberg |
geographic_facet |
Arctic Axel Heiberg Island Heiberg |
genre |
Arctic Axel Heiberg Island permafrost |
genre_facet |
Arctic Axel Heiberg Island permafrost |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4876496/ http://www.ncbi.nlm.nih.gov/pubmed/27135839 http://dx.doi.org/10.1089/ast.2015.1394 |
op_rights |
Copyright 2016, Mary Ann Liebert, Inc. |
op_doi |
https://doi.org/10.1089/ast.2015.1394 |
container_title |
Astrobiology |
container_volume |
16 |
container_issue |
5 |
container_start_page |
335 |
op_container_end_page |
347 |
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1766330720943341568 |