Biogeographic partitioning of Southern Ocean microorganisms revealed by metagenomics
We performed a metagenomic survey (6.6Gbp of 454 sequence data) of Southern Ocean (SO) microorganisms during the austral summer of 2007-2008, examining the genomic signatures of communities across a latitudinal transect from Hobart (44°S) to the Mertz Glacier, Antarctica (67°S). Operational taxonomi...
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ftunivtsydney:oai:opus.lib.uts.edu.au:10453/117633 2023-05-15T13:54:43+02:00 Biogeographic partitioning of Southern Ocean microorganisms revealed by metagenomics Wilkins, D Lauro, FM Williams, TJ Demaere, MZ Brown, MV Hoffman, JM Andrews-Pfannkoch, C Mcquaid, JB Riddle, MJ Rintoul, SR Cavicchioli, R 2013-05-01 application/pdf http://hdl.handle.net/10453/117633 unknown Environmental Microbiology 10.1111/1462-2920.12035 Environmental Microbiology, 2013, 15 (5), pp. 1318 - 1333 1462-2912 http://hdl.handle.net/10453/117633 Microbiology Bacteria Cyanobacteria Amino Acids Branched-Chain RNA Ribosomal 16S Water Microbiology Biodiversity Seawater Phylogeny Oceans and Seas Metagenomics Eukaryota Journal Article 2013 ftunivtsydney 2022-03-13T13:27:37Z We performed a metagenomic survey (6.6Gbp of 454 sequence data) of Southern Ocean (SO) microorganisms during the austral summer of 2007-2008, examining the genomic signatures of communities across a latitudinal transect from Hobart (44°S) to the Mertz Glacier, Antarctica (67°S). Operational taxonomic units (OTUs) of the SAR11 and SAR116 clades and the cyanobacterial genera Prochlorococcus and Synechococcus were strongly overrepresented north of the Polar Front (PF). Conversely, OTUs of the Gammaproteobacterial Sulfur Oxidizer-EOSA-1 (GSO-EOSA-1) complex, the phyla Bacteroidetes and Verrucomicrobia and order Rhodobacterales were characteristic of waters south of the PF. Functions enriched south of the PF included a range of transporters, sulfur reduction and histidine degradation to glutamate, while branched-chain amino acid transport, nucleic acid biosynthesis and methionine salvage were overrepresented north of the PF. The taxonomic and functional characteristics suggested a shift of primary production from cyanobacteria in the north to eukaryotic phytoplankton in the south, and reflected the different trophic statuses of the two regions. The study provides a new level of understanding about SO microbial communities, describing the contrasting taxonomic and functional characteristics of microbial assemblages either side of the PF. © 2012 Society for Applied Microbiology and Blackwell Publishing Ltd. Article in Journal/Newspaper Antarc* Antarctica Mertz Glacier Southern Ocean University of Technology Sydney: OPUS - Open Publications of UTS Scholars Austral Mertz Glacier ENVELOPE(144.500,144.500,-67.667,-67.667) Southern Ocean |
institution |
Open Polar |
collection |
University of Technology Sydney: OPUS - Open Publications of UTS Scholars |
op_collection_id |
ftunivtsydney |
language |
unknown |
topic |
Microbiology Bacteria Cyanobacteria Amino Acids Branched-Chain RNA Ribosomal 16S Water Microbiology Biodiversity Seawater Phylogeny Oceans and Seas Metagenomics Eukaryota |
spellingShingle |
Microbiology Bacteria Cyanobacteria Amino Acids Branched-Chain RNA Ribosomal 16S Water Microbiology Biodiversity Seawater Phylogeny Oceans and Seas Metagenomics Eukaryota Wilkins, D Lauro, FM Williams, TJ Demaere, MZ Brown, MV Hoffman, JM Andrews-Pfannkoch, C Mcquaid, JB Riddle, MJ Rintoul, SR Cavicchioli, R Biogeographic partitioning of Southern Ocean microorganisms revealed by metagenomics |
topic_facet |
Microbiology Bacteria Cyanobacteria Amino Acids Branched-Chain RNA Ribosomal 16S Water Microbiology Biodiversity Seawater Phylogeny Oceans and Seas Metagenomics Eukaryota |
description |
We performed a metagenomic survey (6.6Gbp of 454 sequence data) of Southern Ocean (SO) microorganisms during the austral summer of 2007-2008, examining the genomic signatures of communities across a latitudinal transect from Hobart (44°S) to the Mertz Glacier, Antarctica (67°S). Operational taxonomic units (OTUs) of the SAR11 and SAR116 clades and the cyanobacterial genera Prochlorococcus and Synechococcus were strongly overrepresented north of the Polar Front (PF). Conversely, OTUs of the Gammaproteobacterial Sulfur Oxidizer-EOSA-1 (GSO-EOSA-1) complex, the phyla Bacteroidetes and Verrucomicrobia and order Rhodobacterales were characteristic of waters south of the PF. Functions enriched south of the PF included a range of transporters, sulfur reduction and histidine degradation to glutamate, while branched-chain amino acid transport, nucleic acid biosynthesis and methionine salvage were overrepresented north of the PF. The taxonomic and functional characteristics suggested a shift of primary production from cyanobacteria in the north to eukaryotic phytoplankton in the south, and reflected the different trophic statuses of the two regions. The study provides a new level of understanding about SO microbial communities, describing the contrasting taxonomic and functional characteristics of microbial assemblages either side of the PF. © 2012 Society for Applied Microbiology and Blackwell Publishing Ltd. |
format |
Article in Journal/Newspaper |
author |
Wilkins, D Lauro, FM Williams, TJ Demaere, MZ Brown, MV Hoffman, JM Andrews-Pfannkoch, C Mcquaid, JB Riddle, MJ Rintoul, SR Cavicchioli, R |
author_facet |
Wilkins, D Lauro, FM Williams, TJ Demaere, MZ Brown, MV Hoffman, JM Andrews-Pfannkoch, C Mcquaid, JB Riddle, MJ Rintoul, SR Cavicchioli, R |
author_sort |
Wilkins, D |
title |
Biogeographic partitioning of Southern Ocean microorganisms revealed by metagenomics |
title_short |
Biogeographic partitioning of Southern Ocean microorganisms revealed by metagenomics |
title_full |
Biogeographic partitioning of Southern Ocean microorganisms revealed by metagenomics |
title_fullStr |
Biogeographic partitioning of Southern Ocean microorganisms revealed by metagenomics |
title_full_unstemmed |
Biogeographic partitioning of Southern Ocean microorganisms revealed by metagenomics |
title_sort |
biogeographic partitioning of southern ocean microorganisms revealed by metagenomics |
publishDate |
2013 |
url |
http://hdl.handle.net/10453/117633 |
long_lat |
ENVELOPE(144.500,144.500,-67.667,-67.667) |
geographic |
Austral Mertz Glacier Southern Ocean |
geographic_facet |
Austral Mertz Glacier Southern Ocean |
genre |
Antarc* Antarctica Mertz Glacier Southern Ocean |
genre_facet |
Antarc* Antarctica Mertz Glacier Southern Ocean |
op_relation |
Environmental Microbiology 10.1111/1462-2920.12035 Environmental Microbiology, 2013, 15 (5), pp. 1318 - 1333 1462-2912 http://hdl.handle.net/10453/117633 |
_version_ |
1766260794661535744 |