Genomic differentiation of Deschampsia antarcticaand D. cespitosa(Poaceae) based on satellite DNA
Abstract Repetitive DNA is a rapidly evolving component of vascular plant genomes, which can account for genomic differentiation in plant lineages. Satellite DNA (satDNA) is tandem repetitive DNA for which array size and disposition on chromosomes may vary between reproductively isolated groups, suc...
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Online Access: | http://dx.doi.org/10.1093/botlinnean/boaa045 https://academic.oup.com/botlinnean/article-pdf/194/3/326/49346999/boaa045.pdf |
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croxfordunivpr:10.1093/botlinnean/boaa045 2024-09-15T17:48:19+00:00 Genomic differentiation of Deschampsia antarcticaand D. cespitosa(Poaceae) based on satellite DNA González, María Laura Chiapella, Jorge Topalian, Juliana Urdampilleta, Juan Domingo Dirección Nacional del Antártico International Association for Plant Taxonomy Austrian Science Fund 2020 http://dx.doi.org/10.1093/botlinnean/boaa045 https://academic.oup.com/botlinnean/article-pdf/194/3/326/49346999/boaa045.pdf en eng Oxford University Press (OUP) https://academic.oup.com/pages/standard-publication-reuse-rights Botanical Journal of the Linnean Society volume 194, issue 3, page 326-341 ISSN 0024-4074 1095-8339 journal-article 2020 croxfordunivpr https://doi.org/10.1093/botlinnean/boaa045 2024-08-05T04:30:27Z Abstract Repetitive DNA is a rapidly evolving component of vascular plant genomes, which can account for genomic differentiation in plant lineages. Satellite DNA (satDNA) is tandem repetitive DNA for which array size and disposition on chromosomes may vary between reproductively isolated groups, such as different populations or closely related species. Deschampsia is a cosmopolitan grass genus growing in temperate and cold regions; D. cespitosa is widespread all over the world, whereas D. antarctica is restricted to Antarctica and southern Patagonia. The present work aims to the identification, isolation and comparison of satDNA from the genomes of two Deschampsia spp. with bioinformatics tools and their subsequent analysis and cytological study. The genomic analysis of TAREAN found 34 families of satDNA included on 21 superfamilies, most of them shared between the two species. Some of these satDNAs presented homology with others previously reported for grasses. A few satDNA families were found exclusively in one of the species. Most satDNAs were found in both species and showed high sequence homology, but their distribution on chromosomes was different between species. This highlights the importance of changes in the genomic disposition of satDNA in the evolution of species. Based on the ‘satDNA library hypothesis’ the differential amplification of satDNAs between independent lineages may be the cause of such differences. Article in Journal/Newspaper Antarc* Antarctica Oxford University Press Botanical Journal of the Linnean Society 194 3 326 341 |
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Oxford University Press |
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croxfordunivpr |
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English |
description |
Abstract Repetitive DNA is a rapidly evolving component of vascular plant genomes, which can account for genomic differentiation in plant lineages. Satellite DNA (satDNA) is tandem repetitive DNA for which array size and disposition on chromosomes may vary between reproductively isolated groups, such as different populations or closely related species. Deschampsia is a cosmopolitan grass genus growing in temperate and cold regions; D. cespitosa is widespread all over the world, whereas D. antarctica is restricted to Antarctica and southern Patagonia. The present work aims to the identification, isolation and comparison of satDNA from the genomes of two Deschampsia spp. with bioinformatics tools and their subsequent analysis and cytological study. The genomic analysis of TAREAN found 34 families of satDNA included on 21 superfamilies, most of them shared between the two species. Some of these satDNAs presented homology with others previously reported for grasses. A few satDNA families were found exclusively in one of the species. Most satDNAs were found in both species and showed high sequence homology, but their distribution on chromosomes was different between species. This highlights the importance of changes in the genomic disposition of satDNA in the evolution of species. Based on the ‘satDNA library hypothesis’ the differential amplification of satDNAs between independent lineages may be the cause of such differences. |
author2 |
Dirección Nacional del Antártico International Association for Plant Taxonomy Austrian Science Fund |
format |
Article in Journal/Newspaper |
author |
González, María Laura Chiapella, Jorge Topalian, Juliana Urdampilleta, Juan Domingo |
spellingShingle |
González, María Laura Chiapella, Jorge Topalian, Juliana Urdampilleta, Juan Domingo Genomic differentiation of Deschampsia antarcticaand D. cespitosa(Poaceae) based on satellite DNA |
author_facet |
González, María Laura Chiapella, Jorge Topalian, Juliana Urdampilleta, Juan Domingo |
author_sort |
González, María Laura |
title |
Genomic differentiation of Deschampsia antarcticaand D. cespitosa(Poaceae) based on satellite DNA |
title_short |
Genomic differentiation of Deschampsia antarcticaand D. cespitosa(Poaceae) based on satellite DNA |
title_full |
Genomic differentiation of Deschampsia antarcticaand D. cespitosa(Poaceae) based on satellite DNA |
title_fullStr |
Genomic differentiation of Deschampsia antarcticaand D. cespitosa(Poaceae) based on satellite DNA |
title_full_unstemmed |
Genomic differentiation of Deschampsia antarcticaand D. cespitosa(Poaceae) based on satellite DNA |
title_sort |
genomic differentiation of deschampsia antarcticaand d. cespitosa(poaceae) based on satellite dna |
publisher |
Oxford University Press (OUP) |
publishDate |
2020 |
url |
http://dx.doi.org/10.1093/botlinnean/boaa045 https://academic.oup.com/botlinnean/article-pdf/194/3/326/49346999/boaa045.pdf |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Botanical Journal of the Linnean Society volume 194, issue 3, page 326-341 ISSN 0024-4074 1095-8339 |
op_rights |
https://academic.oup.com/pages/standard-publication-reuse-rights |
op_doi |
https://doi.org/10.1093/botlinnean/boaa045 |
container_title |
Botanical Journal of the Linnean Society |
container_volume |
194 |
container_issue |
3 |
container_start_page |
326 |
op_container_end_page |
341 |
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1810289462255550464 |