The genome of Draba nivalis shows signatures of adaptation to the extreme environmental stresses of the Arctic
AbstractThe Arctic is one of the most extreme terrestrial environments on the planet. Here we present the first complete genome assembly of a plant adapted to the high Arctic, Draba nivalis (Brassicaceae), an attractive model species for studying plant adaptation to the stresses imposed by this hars...
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ftdatacite:10.5683/sp2/oeoex3 2023-05-15T14:30:59+02:00 The genome of Draba nivalis shows signatures of adaptation to the extreme environmental stresses of the Arctic Nowak, Michael Birkeland, Siri Mandáková, Terezie Choudhury, Rimjhim Roy Guo, Xinyi Gustafsson, Lovisa Gizaw, Abel Schrøder-Nielsen, Audun Fracassetti, Marco Brysting, Anne Rieseberg, Loren Slotte, Tanja Parisod, Christian Lysak, Martin Brochmann, Christian 2021 https://dx.doi.org/10.5683/sp2/oeoex3 https://dataverse.scholarsportal.info/citation?persistentId=doi:10.5683/SP2/OEOEX3 unknown Scholars Portal Dataverse dataset Dataset 2021 ftdatacite https://doi.org/10.5683/sp2/oeoex3 2021-11-05T12:55:41Z AbstractThe Arctic is one of the most extreme terrestrial environments on the planet. Here we present the first complete genome assembly of a plant adapted to the high Arctic, Draba nivalis (Brassicaceae), an attractive model species for studying plant adaptation to the stresses imposed by this harsh environment. We used an iterative scaffolding strategy with data from short-reads, single-molecule long reads, proximity ligation data, and a genetic map to produce a 302 Mb assembly that is highly contiguous with 91.6% assembled into eight chromosomes (the base chromosome number). To identify candidate genes and gene families that may have facilitated adaptation to Arctic environmental stresses, we performed comparative genomic analyses with nine non-Arctic Brassicaceae species. We show that the D. nivalis genome contains expanded suites of genes associated with drought and cold stress (e.g. related to the maintenance of oxidation-reduction homeostasis, meiosis, and signaling pathways). The expansions of gene families associated with these functions appear to be driven in part by the activity of transposable elements. Tests of positive selection identify suites of candidate genes associated with meiosis and photoperiodism, as well as cold, drought, and oxidative stress responses. Our results reveal a multifaceted landscape of stress adaptation in the D. nivalis genome, offering avenues for the continued development of this species as an Arctic model plant. Dataset Arctic draba Arctic DataCite Metadata Store (German National Library of Science and Technology) Arctic |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
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ftdatacite |
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description |
AbstractThe Arctic is one of the most extreme terrestrial environments on the planet. Here we present the first complete genome assembly of a plant adapted to the high Arctic, Draba nivalis (Brassicaceae), an attractive model species for studying plant adaptation to the stresses imposed by this harsh environment. We used an iterative scaffolding strategy with data from short-reads, single-molecule long reads, proximity ligation data, and a genetic map to produce a 302 Mb assembly that is highly contiguous with 91.6% assembled into eight chromosomes (the base chromosome number). To identify candidate genes and gene families that may have facilitated adaptation to Arctic environmental stresses, we performed comparative genomic analyses with nine non-Arctic Brassicaceae species. We show that the D. nivalis genome contains expanded suites of genes associated with drought and cold stress (e.g. related to the maintenance of oxidation-reduction homeostasis, meiosis, and signaling pathways). The expansions of gene families associated with these functions appear to be driven in part by the activity of transposable elements. Tests of positive selection identify suites of candidate genes associated with meiosis and photoperiodism, as well as cold, drought, and oxidative stress responses. Our results reveal a multifaceted landscape of stress adaptation in the D. nivalis genome, offering avenues for the continued development of this species as an Arctic model plant. |
format |
Dataset |
author |
Nowak, Michael Birkeland, Siri Mandáková, Terezie Choudhury, Rimjhim Roy Guo, Xinyi Gustafsson, Lovisa Gizaw, Abel Schrøder-Nielsen, Audun Fracassetti, Marco Brysting, Anne Rieseberg, Loren Slotte, Tanja Parisod, Christian Lysak, Martin Brochmann, Christian |
spellingShingle |
Nowak, Michael Birkeland, Siri Mandáková, Terezie Choudhury, Rimjhim Roy Guo, Xinyi Gustafsson, Lovisa Gizaw, Abel Schrøder-Nielsen, Audun Fracassetti, Marco Brysting, Anne Rieseberg, Loren Slotte, Tanja Parisod, Christian Lysak, Martin Brochmann, Christian The genome of Draba nivalis shows signatures of adaptation to the extreme environmental stresses of the Arctic |
author_facet |
Nowak, Michael Birkeland, Siri Mandáková, Terezie Choudhury, Rimjhim Roy Guo, Xinyi Gustafsson, Lovisa Gizaw, Abel Schrøder-Nielsen, Audun Fracassetti, Marco Brysting, Anne Rieseberg, Loren Slotte, Tanja Parisod, Christian Lysak, Martin Brochmann, Christian |
author_sort |
Nowak, Michael |
title |
The genome of Draba nivalis shows signatures of adaptation to the extreme environmental stresses of the Arctic |
title_short |
The genome of Draba nivalis shows signatures of adaptation to the extreme environmental stresses of the Arctic |
title_full |
The genome of Draba nivalis shows signatures of adaptation to the extreme environmental stresses of the Arctic |
title_fullStr |
The genome of Draba nivalis shows signatures of adaptation to the extreme environmental stresses of the Arctic |
title_full_unstemmed |
The genome of Draba nivalis shows signatures of adaptation to the extreme environmental stresses of the Arctic |
title_sort |
genome of draba nivalis shows signatures of adaptation to the extreme environmental stresses of the arctic |
publisher |
Scholars Portal Dataverse |
publishDate |
2021 |
url |
https://dx.doi.org/10.5683/sp2/oeoex3 https://dataverse.scholarsportal.info/citation?persistentId=doi:10.5683/SP2/OEOEX3 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic draba Arctic |
genre_facet |
Arctic draba Arctic |
op_doi |
https://doi.org/10.5683/sp2/oeoex3 |
_version_ |
1766304731240595456 |