Microbial Assemblages in Pressurized Antarctic Brine Pockets (Tarn Flat, Northern Victoria Land): A Hotspot of Biodiversity and Activity.
Two distinct pressurized hypersaline brine pockets (named TF4 and TF5), separated by a thin ice layer, were detected below an ice-sealed Antarctic lake. Prokaryotic (bacterial and archaeal) diversity, abundances (including virus-like particles) and metabolic profiles were investigated by an integrat...
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Online Access: | https://doi.org/10.3390/microorganisms7090333 https://pubmed.ncbi.nlm.nih.gov/31505750 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6780602/ |
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ftpubmed:31505750 2024-09-15T17:48:35+00:00 Microbial Assemblages in Pressurized Antarctic Brine Pockets (Tarn Flat, Northern Victoria Land): A Hotspot of Biodiversity and Activity. Papale, Maria Lo Giudice, Angelina Conte, Antonella Rizzo, Carmen Rappazzo, Alessandro C Maimone, Giovanna Caruso, Gabriella La Ferla, Rosabruna Azzaro, Maurizio Gugliandolo, Concetta Paranhos, Rodolfo Cabral, Anderson S Romano Spica, Vincenzo Guglielmin, Mauro 2019 Sep 09 https://doi.org/10.3390/microorganisms7090333 https://pubmed.ncbi.nlm.nih.gov/31505750 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6780602/ eng eng MDPI https://doi.org/10.3390/microorganisms7090333 https://pubmed.ncbi.nlm.nih.gov/31505750 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6780602/ Microorganisms ISSN:2076-2607 Volume:7 Issue:9 brine pockets hyperthermophiles metabolic potential methanogens sulphur-reducing bacteria Journal Article 2019 ftpubmed https://doi.org/10.3390/microorganisms7090333 2024-07-20T16:02:00Z Two distinct pressurized hypersaline brine pockets (named TF4 and TF5), separated by a thin ice layer, were detected below an ice-sealed Antarctic lake. Prokaryotic (bacterial and archaeal) diversity, abundances (including virus-like particles) and metabolic profiles were investigated by an integrated approach, including traditional and new-generation methods. Although similar diversity indices were computed for both Bacteria and Archaea, distinct bacterial and archaeal assemblages were observed. Bacteroidetes and Gammaproteobacteria were more abundant in the shallowest brine pocket, TF4, and Deltaproteobacteria, mainly represented by versatile sulphate-reducing bacteria, dominated in the deepest, TF5. The detection of sulphate-reducing bacteria and methanogenic Archaea likely reflects the presence of a distinct synthrophic consortium in TF5. Surprisingly, members assigned to hyperthermophilic Crenarchaeota and Euryarchaeota were common to both brines, indicating that these cold habitats host the most thermally tolerant Archaea. The patterns of microbial communities were different, coherently with the observed microbiological diversity between TF4 and TF5 brines. Both the influence exerted by upward movement of saline brines from a sub-surface anoxic system and the possible occurrence of an ancient ice remnant from the Ross Ice Shelf were the likely main factors shaping the microbial communities. Article in Journal/Newspaper Antarc* Antarctic Ice Shelf Ross Ice Shelf Victoria Land PubMed Central (PMC) Microorganisms 7 9 333 |
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Open Polar |
collection |
PubMed Central (PMC) |
op_collection_id |
ftpubmed |
language |
English |
topic |
brine pockets hyperthermophiles metabolic potential methanogens sulphur-reducing bacteria |
spellingShingle |
brine pockets hyperthermophiles metabolic potential methanogens sulphur-reducing bacteria Papale, Maria Lo Giudice, Angelina Conte, Antonella Rizzo, Carmen Rappazzo, Alessandro C Maimone, Giovanna Caruso, Gabriella La Ferla, Rosabruna Azzaro, Maurizio Gugliandolo, Concetta Paranhos, Rodolfo Cabral, Anderson S Romano Spica, Vincenzo Guglielmin, Mauro Microbial Assemblages in Pressurized Antarctic Brine Pockets (Tarn Flat, Northern Victoria Land): A Hotspot of Biodiversity and Activity. |
topic_facet |
brine pockets hyperthermophiles metabolic potential methanogens sulphur-reducing bacteria |
description |
Two distinct pressurized hypersaline brine pockets (named TF4 and TF5), separated by a thin ice layer, were detected below an ice-sealed Antarctic lake. Prokaryotic (bacterial and archaeal) diversity, abundances (including virus-like particles) and metabolic profiles were investigated by an integrated approach, including traditional and new-generation methods. Although similar diversity indices were computed for both Bacteria and Archaea, distinct bacterial and archaeal assemblages were observed. Bacteroidetes and Gammaproteobacteria were more abundant in the shallowest brine pocket, TF4, and Deltaproteobacteria, mainly represented by versatile sulphate-reducing bacteria, dominated in the deepest, TF5. The detection of sulphate-reducing bacteria and methanogenic Archaea likely reflects the presence of a distinct synthrophic consortium in TF5. Surprisingly, members assigned to hyperthermophilic Crenarchaeota and Euryarchaeota were common to both brines, indicating that these cold habitats host the most thermally tolerant Archaea. The patterns of microbial communities were different, coherently with the observed microbiological diversity between TF4 and TF5 brines. Both the influence exerted by upward movement of saline brines from a sub-surface anoxic system and the possible occurrence of an ancient ice remnant from the Ross Ice Shelf were the likely main factors shaping the microbial communities. |
format |
Article in Journal/Newspaper |
author |
Papale, Maria Lo Giudice, Angelina Conte, Antonella Rizzo, Carmen Rappazzo, Alessandro C Maimone, Giovanna Caruso, Gabriella La Ferla, Rosabruna Azzaro, Maurizio Gugliandolo, Concetta Paranhos, Rodolfo Cabral, Anderson S Romano Spica, Vincenzo Guglielmin, Mauro |
author_facet |
Papale, Maria Lo Giudice, Angelina Conte, Antonella Rizzo, Carmen Rappazzo, Alessandro C Maimone, Giovanna Caruso, Gabriella La Ferla, Rosabruna Azzaro, Maurizio Gugliandolo, Concetta Paranhos, Rodolfo Cabral, Anderson S Romano Spica, Vincenzo Guglielmin, Mauro |
author_sort |
Papale, Maria |
title |
Microbial Assemblages in Pressurized Antarctic Brine Pockets (Tarn Flat, Northern Victoria Land): A Hotspot of Biodiversity and Activity. |
title_short |
Microbial Assemblages in Pressurized Antarctic Brine Pockets (Tarn Flat, Northern Victoria Land): A Hotspot of Biodiversity and Activity. |
title_full |
Microbial Assemblages in Pressurized Antarctic Brine Pockets (Tarn Flat, Northern Victoria Land): A Hotspot of Biodiversity and Activity. |
title_fullStr |
Microbial Assemblages in Pressurized Antarctic Brine Pockets (Tarn Flat, Northern Victoria Land): A Hotspot of Biodiversity and Activity. |
title_full_unstemmed |
Microbial Assemblages in Pressurized Antarctic Brine Pockets (Tarn Flat, Northern Victoria Land): A Hotspot of Biodiversity and Activity. |
title_sort |
microbial assemblages in pressurized antarctic brine pockets (tarn flat, northern victoria land): a hotspot of biodiversity and activity. |
publisher |
MDPI |
publishDate |
2019 |
url |
https://doi.org/10.3390/microorganisms7090333 https://pubmed.ncbi.nlm.nih.gov/31505750 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6780602/ |
genre |
Antarc* Antarctic Ice Shelf Ross Ice Shelf Victoria Land |
genre_facet |
Antarc* Antarctic Ice Shelf Ross Ice Shelf Victoria Land |
op_source |
Microorganisms ISSN:2076-2607 Volume:7 Issue:9 |
op_relation |
https://doi.org/10.3390/microorganisms7090333 https://pubmed.ncbi.nlm.nih.gov/31505750 https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6780602/ |
op_doi |
https://doi.org/10.3390/microorganisms7090333 |
container_title |
Microorganisms |
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7 |
container_issue |
9 |
container_start_page |
333 |
_version_ |
1810289977812058112 |