Elucidating Viral Communities During a Phytoplankton Bloom on the West Antarctic Peninsula
In Antarctic coastal waters where nutrient limitations are low, viruses are expected to play a major role in the regulation of bloom events. Despite this, research in viral identification and dynamics is scarce, with limited information available for the Southern Ocean (SO). This study presents an i...
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ftpubman:oai:pure.mpg.de:item_3194185 2023-08-27T04:04:25+02:00 Elucidating Viral Communities During a Phytoplankton Bloom on the West Antarctic Peninsula Alarcon-Schumacher, T. Guajardo-Leiva, S. Anton, J. Diez, B. 2019-05-14 application/pdf http://hdl.handle.net/21.11116/0000-0005-BA34-F http://hdl.handle.net/21.11116/0000-0006-64CD-3 eng eng info:eu-repo/semantics/altIdentifier/doi/10.3389/fmicb.2019.01014 http://hdl.handle.net/21.11116/0000-0005-BA34-F http://hdl.handle.net/21.11116/0000-0006-64CD-3 info:eu-repo/semantics/openAccess Frontiers in Microbiology info:eu-repo/semantics/article 2019 ftpubman https://doi.org/10.3389/fmicb.2019.01014 2023-08-02T00:09:54Z In Antarctic coastal waters where nutrient limitations are low, viruses are expected to play a major role in the regulation of bloom events. Despite this, research in viral identification and dynamics is scarce, with limited information available for the Southern Ocean (SO). This study presents an integrative-omics approach, comparing variation in the viral and microbial active communities on two contrasting sample conditions from a diatom-dominated phytoplankton bloom occurring in Chile Bay in the West Antarctic Peninsula (WAP) in the summer of 2014. The known viral community, initially dominated by Myoviridae family (similar to 82% of the total assigned reads), changed to become dominated by Phycodnaviridae (similar to 90%), while viral activity was predominantly driven by dsDNA members of the Phycodnaviridae (similar to 50%) and diatom infecting ssRNA viruses (similar to 38%), becoming more significant as chlorophyll a increased. A genomic and phylogenetic characterization allowed the identification of a new viral lineage within the Myoviridae family. This new lineage of viruses infects Pseudoalteromonas and was dominant in the phage community. In addition, a new Phycodnavirus (PaV) was described, which is predicted to infect Phaeocystis antarctica, the main blooming haptophyte in the SO. This work was able to identify the changes in the main viral players during a bloom development and suggests that the changes observed in the virioplankton could be used as a model to understand the development and decay of blooms that occur throughout the WAP. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Southern Ocean Max Planck Society: MPG.PuRe Antarctic Antarctic Peninsula Southern Ocean Frontiers in Microbiology 10 |
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Max Planck Society: MPG.PuRe |
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ftpubman |
language |
English |
description |
In Antarctic coastal waters where nutrient limitations are low, viruses are expected to play a major role in the regulation of bloom events. Despite this, research in viral identification and dynamics is scarce, with limited information available for the Southern Ocean (SO). This study presents an integrative-omics approach, comparing variation in the viral and microbial active communities on two contrasting sample conditions from a diatom-dominated phytoplankton bloom occurring in Chile Bay in the West Antarctic Peninsula (WAP) in the summer of 2014. The known viral community, initially dominated by Myoviridae family (similar to 82% of the total assigned reads), changed to become dominated by Phycodnaviridae (similar to 90%), while viral activity was predominantly driven by dsDNA members of the Phycodnaviridae (similar to 50%) and diatom infecting ssRNA viruses (similar to 38%), becoming more significant as chlorophyll a increased. A genomic and phylogenetic characterization allowed the identification of a new viral lineage within the Myoviridae family. This new lineage of viruses infects Pseudoalteromonas and was dominant in the phage community. In addition, a new Phycodnavirus (PaV) was described, which is predicted to infect Phaeocystis antarctica, the main blooming haptophyte in the SO. This work was able to identify the changes in the main viral players during a bloom development and suggests that the changes observed in the virioplankton could be used as a model to understand the development and decay of blooms that occur throughout the WAP. |
format |
Article in Journal/Newspaper |
author |
Alarcon-Schumacher, T. Guajardo-Leiva, S. Anton, J. Diez, B. |
spellingShingle |
Alarcon-Schumacher, T. Guajardo-Leiva, S. Anton, J. Diez, B. Elucidating Viral Communities During a Phytoplankton Bloom on the West Antarctic Peninsula |
author_facet |
Alarcon-Schumacher, T. Guajardo-Leiva, S. Anton, J. Diez, B. |
author_sort |
Alarcon-Schumacher, T. |
title |
Elucidating Viral Communities During a Phytoplankton Bloom on the West Antarctic Peninsula |
title_short |
Elucidating Viral Communities During a Phytoplankton Bloom on the West Antarctic Peninsula |
title_full |
Elucidating Viral Communities During a Phytoplankton Bloom on the West Antarctic Peninsula |
title_fullStr |
Elucidating Viral Communities During a Phytoplankton Bloom on the West Antarctic Peninsula |
title_full_unstemmed |
Elucidating Viral Communities During a Phytoplankton Bloom on the West Antarctic Peninsula |
title_sort |
elucidating viral communities during a phytoplankton bloom on the west antarctic peninsula |
publishDate |
2019 |
url |
http://hdl.handle.net/21.11116/0000-0005-BA34-F http://hdl.handle.net/21.11116/0000-0006-64CD-3 |
geographic |
Antarctic Antarctic Peninsula Southern Ocean |
geographic_facet |
Antarctic Antarctic Peninsula Southern Ocean |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Southern Ocean |
op_source |
Frontiers in Microbiology |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3389/fmicb.2019.01014 http://hdl.handle.net/21.11116/0000-0005-BA34-F http://hdl.handle.net/21.11116/0000-0006-64CD-3 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3389/fmicb.2019.01014 |
container_title |
Frontiers in Microbiology |
container_volume |
10 |
_version_ |
1775351269917982720 |