The genome of Draba nivalis shows signatures of adaptation to the extreme environmental stresses of the Arctic
Main Authors: | 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 |
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Format: | info dataset eJournal |
Terbitan: |
, 2020
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Subjects: | |
Online Access: |
https://zenodo.org/record/3998834 |
ctrlnum |
3998834 |
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fullrecord |
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<dc schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd"><creator>Nowak, Michael</creator><creator>Birkeland, Siri</creator><creator>Mandáková, Terezie</creator><creator>Choudhury, Rimjhim Roy</creator><creator>Guo, Xinyi</creator><creator>Gustafsson, Lovisa</creator><creator>Gizaw, Abel</creator><creator>Schrøder-Nielsen, Audun</creator><creator>Fracassetti, Marco</creator><creator>Brysting, Anne</creator><creator>Rieseberg, Loren</creator><creator>Slotte, Tanja</creator><creator>Parisod, Christian</creator><creator>Lysak, Martin</creator><creator>Brochmann, Christian</creator><date>2020-08-24</date><description>The 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.</description><description>Please see ReadMe.txt for a full description of each file.</description><identifier>https://zenodo.org/record/3998834</identifier><identifier>10.5061/dryad.pg4f4qrm4</identifier><identifier>oai:zenodo.org:3998834</identifier><relation>url:https://zenodo.org/communities/dryad</relation><rights>info:eu-repo/semantics/openAccess</rights><rights>https://creativecommons.org/publicdomain/zero/1.0/legalcode</rights><subject>chromosome-scale assembly</subject><subject>Brassicaceae</subject><title>The genome of Draba nivalis shows signatures of adaptation to the extreme environmental stresses of the Arctic</title><type>Other:info:eu-repo/semantics/other</type><type>Other:dataset</type><recordID>3998834</recordID></dc>
|
format |
Other:info:eu-repo/semantics/other Other Other:dataset Journal:eJournal Journal |
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 |
title |
The genome of Draba nivalis shows signatures of adaptation to the extreme environmental stresses of the Arctic |
publishDate |
2020 |
topic |
chromosome-scale assembly Brassicaceae |
url |
https://zenodo.org/record/3998834 |
contents |
The 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. Please see ReadMe.txt for a full description of each file. |
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IOS17403.3998834 |
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Universitas PGRI Palembang |
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189 |
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library:university library |
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Perpustakaan Universitas PGRI Palembang |
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587 |
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Marga Life in South Sumatra in the Past: Puyang Concept Sacrificed and Demythosized |
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17403 |
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KOTA PALEMBANG |
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SUMATERA SELATAN |
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IOS17403 |
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2022-07-26T02:31:54Z |
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2022-07-26T02:31:54Z |
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1739408132192337920 |
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17.60987 |