Linking extreme seasonality and gene expression in Arctic marine protists
Abstract At high latitudes, strong seasonal differences in light availability affect marine organisms and regulate the timing of ecosystem processes. Marine protists are key players in Arctic aquatic ecosystems, yet little is known about their ecological roles over yearly cycles. This is especially...
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Online Access: | https://doi.org/10.1038/s41598-023-41204-3 https://doaj.org/article/52606d57ce4f47e987fe4b8eebaf8b3a |
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ftdoajarticles:oai:doaj.org/article:52606d57ce4f47e987fe4b8eebaf8b3a 2023-10-09T21:48:02+02:00 Linking extreme seasonality and gene expression in Arctic marine protists Magdalena Wutkowska Anna Vader Ramiro Logares Eric Pelletier Tove M. Gabrielsen 2023-09-01T00:00:00Z https://doi.org/10.1038/s41598-023-41204-3 https://doaj.org/article/52606d57ce4f47e987fe4b8eebaf8b3a EN eng Nature Portfolio https://doi.org/10.1038/s41598-023-41204-3 https://doaj.org/toc/2045-2322 doi:10.1038/s41598-023-41204-3 2045-2322 https://doaj.org/article/52606d57ce4f47e987fe4b8eebaf8b3a Scientific Reports, Vol 13, Iss 1, Pp 1-15 (2023) Medicine R Science Q article 2023 ftdoajarticles https://doi.org/10.1038/s41598-023-41204-3 2023-09-17T00:39:30Z Abstract At high latitudes, strong seasonal differences in light availability affect marine organisms and regulate the timing of ecosystem processes. Marine protists are key players in Arctic aquatic ecosystems, yet little is known about their ecological roles over yearly cycles. This is especially true for the dark polar night period, which up until recently was assumed to be devoid of biological activity. A 12 million transcripts catalogue was built from 0.45 to 10 μm protist assemblages sampled over 13 months in a time series station in an Arctic fjord in Svalbard. Community gene expression was correlated with seasonality, with light as the main driving factor. Transcript diversity and evenness were higher during polar night compared to polar day. Light-dependent functions had higher relative expression during polar day, except phototransduction. 64% of the most expressed genes could not be functionally annotated, yet up to 78% were identified in Arctic samples from Tara Oceans, suggesting that Arctic marine assemblages are distinct from those from other oceans. Our study increases understanding of the links between extreme seasonality and biological processes in pico- and nanoplanktonic protists. Our results set the ground for future monitoring studies investigating the seasonal impact of climate change on the communities of microbial eukaryotes in the High Arctic. Article in Journal/Newspaper Arctic Climate change polar night Svalbard Directory of Open Access Journals: DOAJ Articles Arctic Svalbard Scientific Reports 13 1 |
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Directory of Open Access Journals: DOAJ Articles |
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English |
topic |
Medicine R Science Q |
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Medicine R Science Q Magdalena Wutkowska Anna Vader Ramiro Logares Eric Pelletier Tove M. Gabrielsen Linking extreme seasonality and gene expression in Arctic marine protists |
topic_facet |
Medicine R Science Q |
description |
Abstract At high latitudes, strong seasonal differences in light availability affect marine organisms and regulate the timing of ecosystem processes. Marine protists are key players in Arctic aquatic ecosystems, yet little is known about their ecological roles over yearly cycles. This is especially true for the dark polar night period, which up until recently was assumed to be devoid of biological activity. A 12 million transcripts catalogue was built from 0.45 to 10 μm protist assemblages sampled over 13 months in a time series station in an Arctic fjord in Svalbard. Community gene expression was correlated with seasonality, with light as the main driving factor. Transcript diversity and evenness were higher during polar night compared to polar day. Light-dependent functions had higher relative expression during polar day, except phototransduction. 64% of the most expressed genes could not be functionally annotated, yet up to 78% were identified in Arctic samples from Tara Oceans, suggesting that Arctic marine assemblages are distinct from those from other oceans. Our study increases understanding of the links between extreme seasonality and biological processes in pico- and nanoplanktonic protists. Our results set the ground for future monitoring studies investigating the seasonal impact of climate change on the communities of microbial eukaryotes in the High Arctic. |
format |
Article in Journal/Newspaper |
author |
Magdalena Wutkowska Anna Vader Ramiro Logares Eric Pelletier Tove M. Gabrielsen |
author_facet |
Magdalena Wutkowska Anna Vader Ramiro Logares Eric Pelletier Tove M. Gabrielsen |
author_sort |
Magdalena Wutkowska |
title |
Linking extreme seasonality and gene expression in Arctic marine protists |
title_short |
Linking extreme seasonality and gene expression in Arctic marine protists |
title_full |
Linking extreme seasonality and gene expression in Arctic marine protists |
title_fullStr |
Linking extreme seasonality and gene expression in Arctic marine protists |
title_full_unstemmed |
Linking extreme seasonality and gene expression in Arctic marine protists |
title_sort |
linking extreme seasonality and gene expression in arctic marine protists |
publisher |
Nature Portfolio |
publishDate |
2023 |
url |
https://doi.org/10.1038/s41598-023-41204-3 https://doaj.org/article/52606d57ce4f47e987fe4b8eebaf8b3a |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Climate change polar night Svalbard |
genre_facet |
Arctic Climate change polar night Svalbard |
op_source |
Scientific Reports, Vol 13, Iss 1, Pp 1-15 (2023) |
op_relation |
https://doi.org/10.1038/s41598-023-41204-3 https://doaj.org/toc/2045-2322 doi:10.1038/s41598-023-41204-3 2045-2322 https://doaj.org/article/52606d57ce4f47e987fe4b8eebaf8b3a |
op_doi |
https://doi.org/10.1038/s41598-023-41204-3 |
container_title |
Scientific Reports |
container_volume |
13 |
container_issue |
1 |
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1779311061770436608 |