Ecology of Subglacial Lake Vostok (Antarctica), Based on Metagenomic/Metatranscriptomic Analyses of Accretion Ice
Lake Vostok is the largest of the nearly 400 subglacial Antarctic lakes and has been continuously buried by glacial ice for 15 million years. Extreme cold, heat (from possible hydrothermal activity), pressure (from the overriding glacier) and dissolved oxygen (delivered by melting meteoric ice), in...
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ftdoajarticles:oai:doaj.org/article:f259ffab26694fc7a9aca712793ac007 2023-10-01T03:52:09+02:00 Ecology of Subglacial Lake Vostok (Antarctica), Based on Metagenomic/Metatranscriptomic Analyses of Accretion Ice Tom D'Elia Robyn Edgar Ram Veerapaneni Zeynep A. Koçer Scott O. Rogers Yury M. Shtarkman 2013-03-01T00:00:00Z https://doi.org/10.3390/biology2020629 https://doaj.org/article/f259ffab26694fc7a9aca712793ac007 EN eng MDPI AG http://www.mdpi.com/2079-7737/2/2/629 https://doaj.org/toc/2079-7737 doi:10.3390/biology2020629 2079-7737 https://doaj.org/article/f259ffab26694fc7a9aca712793ac007 Biology, Vol 2, Iss 2, Pp 629-650 (2013) Lake Vostok subglacial lake metagenomic metatranscriptomic marine aquatic Biology (General) QH301-705.5 article 2013 ftdoajarticles https://doi.org/10.3390/biology2020629 2023-09-03T00:40:54Z Lake Vostok is the largest of the nearly 400 subglacial Antarctic lakes and has been continuously buried by glacial ice for 15 million years. Extreme cold, heat (from possible hydrothermal activity), pressure (from the overriding glacier) and dissolved oxygen (delivered by melting meteoric ice), in addition to limited nutrients and complete darkness, combine to produce one of the most extreme environments on Earth. Metagenomic/metatranscriptomic analyses of ice that accreted over a shallow embayment and over the southern main lake basin indicate the presence of thousands of species of organisms (94% Bacteria, 6% Eukarya, and two Archaea). The predominant bacterial sequences were closest to those from species of Firmicutes, Proteobacteria and Actinobacteria, while the predominant eukaryotic sequences were most similar to those from species of ascomycetous and basidiomycetous Fungi. Based on the sequence data, the lake appears to contain a mixture of autotrophs and heterotrophs capable of performing nitrogen fixation, nitrogen cycling, carbon fixation and nutrient recycling. Sequences closest to those of psychrophiles and thermophiles indicate a cold lake with possible hydrothermal activity. Sequences most similar to those from marine and aquatic species suggest the presence of marine and freshwater regions. Article in Journal/Newspaper Antarc* Antarctic Antarctica Directory of Open Access Journals: DOAJ Articles Antarctic Lake Vostok ENVELOPE(106.000,106.000,-77.500,-77.500) Vostok Subglacial Lake ENVELOPE(106.000,106.000,-77.500,-77.500) Biology 2 2 629 650 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Lake Vostok subglacial lake metagenomic metatranscriptomic marine aquatic Biology (General) QH301-705.5 |
spellingShingle |
Lake Vostok subglacial lake metagenomic metatranscriptomic marine aquatic Biology (General) QH301-705.5 Tom D'Elia Robyn Edgar Ram Veerapaneni Zeynep A. Koçer Scott O. Rogers Yury M. Shtarkman Ecology of Subglacial Lake Vostok (Antarctica), Based on Metagenomic/Metatranscriptomic Analyses of Accretion Ice |
topic_facet |
Lake Vostok subglacial lake metagenomic metatranscriptomic marine aquatic Biology (General) QH301-705.5 |
description |
Lake Vostok is the largest of the nearly 400 subglacial Antarctic lakes and has been continuously buried by glacial ice for 15 million years. Extreme cold, heat (from possible hydrothermal activity), pressure (from the overriding glacier) and dissolved oxygen (delivered by melting meteoric ice), in addition to limited nutrients and complete darkness, combine to produce one of the most extreme environments on Earth. Metagenomic/metatranscriptomic analyses of ice that accreted over a shallow embayment and over the southern main lake basin indicate the presence of thousands of species of organisms (94% Bacteria, 6% Eukarya, and two Archaea). The predominant bacterial sequences were closest to those from species of Firmicutes, Proteobacteria and Actinobacteria, while the predominant eukaryotic sequences were most similar to those from species of ascomycetous and basidiomycetous Fungi. Based on the sequence data, the lake appears to contain a mixture of autotrophs and heterotrophs capable of performing nitrogen fixation, nitrogen cycling, carbon fixation and nutrient recycling. Sequences closest to those of psychrophiles and thermophiles indicate a cold lake with possible hydrothermal activity. Sequences most similar to those from marine and aquatic species suggest the presence of marine and freshwater regions. |
format |
Article in Journal/Newspaper |
author |
Tom D'Elia Robyn Edgar Ram Veerapaneni Zeynep A. Koçer Scott O. Rogers Yury M. Shtarkman |
author_facet |
Tom D'Elia Robyn Edgar Ram Veerapaneni Zeynep A. Koçer Scott O. Rogers Yury M. Shtarkman |
author_sort |
Tom D'Elia |
title |
Ecology of Subglacial Lake Vostok (Antarctica), Based on Metagenomic/Metatranscriptomic Analyses of Accretion Ice |
title_short |
Ecology of Subglacial Lake Vostok (Antarctica), Based on Metagenomic/Metatranscriptomic Analyses of Accretion Ice |
title_full |
Ecology of Subglacial Lake Vostok (Antarctica), Based on Metagenomic/Metatranscriptomic Analyses of Accretion Ice |
title_fullStr |
Ecology of Subglacial Lake Vostok (Antarctica), Based on Metagenomic/Metatranscriptomic Analyses of Accretion Ice |
title_full_unstemmed |
Ecology of Subglacial Lake Vostok (Antarctica), Based on Metagenomic/Metatranscriptomic Analyses of Accretion Ice |
title_sort |
ecology of subglacial lake vostok (antarctica), based on metagenomic/metatranscriptomic analyses of accretion ice |
publisher |
MDPI AG |
publishDate |
2013 |
url |
https://doi.org/10.3390/biology2020629 https://doaj.org/article/f259ffab26694fc7a9aca712793ac007 |
long_lat |
ENVELOPE(106.000,106.000,-77.500,-77.500) ENVELOPE(106.000,106.000,-77.500,-77.500) |
geographic |
Antarctic Lake Vostok Vostok Subglacial Lake |
geographic_facet |
Antarctic Lake Vostok Vostok Subglacial Lake |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Biology, Vol 2, Iss 2, Pp 629-650 (2013) |
op_relation |
http://www.mdpi.com/2079-7737/2/2/629 https://doaj.org/toc/2079-7737 doi:10.3390/biology2020629 2079-7737 https://doaj.org/article/f259ffab26694fc7a9aca712793ac007 |
op_doi |
https://doi.org/10.3390/biology2020629 |
container_title |
Biology |
container_volume |
2 |
container_issue |
2 |
container_start_page |
629 |
op_container_end_page |
650 |
_version_ |
1778517859695067136 |