Repetitive DNA Restructuring Across Multiple Nicotiana Allopolyploidisation Events Shows a Lack of Strong Cytoplasmic Bias in Influencing Repeat Turnover.
dc.contributor.author | Dodsworth, S | en_US |
dc.contributor.author | Guignard, MS | en_US |
dc.contributor.author | Pérez-Escobar, OA | en_US |
dc.contributor.author | Struebig, M | en_US |
dc.contributor.author | Chase, MW | en_US |
dc.contributor.author | Leitch, AR | en_US |
dc.date.accessioned | 2020-03-12T14:12:36Z | |
dc.date.available | 2020-02-13 | en_US |
dc.date.issued | 2020-02-19 | en_US |
dc.identifier.uri | https://qmro.qmul.ac.uk/xmlui/handle/123456789/63145 | |
dc.description.abstract | Allopolyploidy is acknowledged as an important force in plant evolution. Frequent allopolyploidy in Nicotiana across different timescales permits the evaluation of genome restructuring and repeat dynamics through time. Here we use a clustering approach on high-throughput sequence reads to identify the main classes of repetitive elements following three allotetraploid events, and how these are inherited from the closest extant relatives of the maternal and paternal subgenome donors. In all three cases, there was a lack of clear maternal, cytoplasmic bias in repeat evolution, i.e., lack of a predicted bias towards maternal subgenome-derived repeats, with roughly equal contributions from both parental subgenomes. Different overall repeat dynamics were found across timescales of <0.5 (N. rustica L.), 4 (N. repanda Willd.) and 6 (N. benthamiana Domin) Ma, with nearly additive, genome upsizing, and genome downsizing, respectively. Lower copy repeats were inherited in similar abundance to the parental subgenomes, whereas higher copy repeats contributed the most to genome size change in N. repanda and N. benthamiana. Genome downsizing post-polyploidisation may be a general long-term trend across angiosperms, but at more recent timescales there is species-specific variance as found in Nicotiana. | en_US |
dc.language | eng | en_US |
dc.relation.ispartof | Genes (Basel) | en_US |
dc.rights | This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. | |
dc.rights | Attribution 3.0 United States | * |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/us/ | * |
dc.subject | allopolyploidisation | en_US |
dc.subject | diploidisation | en_US |
dc.subject | genome evolution | en_US |
dc.subject | genome reorganisation | en_US |
dc.subject | nuclear-cytoplasmic interaction hypothesis | en_US |
dc.subject | polyploidy | en_US |
dc.subject | repeats | en_US |
dc.subject | retroelements | en_US |
dc.title | Repetitive DNA Restructuring Across Multiple Nicotiana Allopolyploidisation Events Shows a Lack of Strong Cytoplasmic Bias in Influencing Repeat Turnover. | en_US |
dc.type | Article | |
dc.rights.holder | © The Author(s) 2020 | |
dc.identifier.doi | 10.3390/genes11020216 | en_US |
pubs.author-url | https://www.ncbi.nlm.nih.gov/pubmed/32092894 | en_US |
pubs.issue | 2 | en_US |
pubs.notes | Not known | en_US |
pubs.publication-status | Published online | en_US |
pubs.volume | 11 | en_US |
dcterms.dateAccepted | 2020-02-13 | en_US |
rioxxterms.funder | Default funder | en_US |
rioxxterms.identifier.project | Default project | en_US |
qmul.funder | Genome Evolution in allopoyploid plants::Natural Environment Research Council [2006-2012] | en_US |
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