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Organization and Evolution of Subtelomeric Satellite Repeats in the Potato Genome
Subtelomeric domains immediately adjacent to telomeres represent one of the most dynamic and rapidly evolving regions in eukaryotic genomes. A common feature associated with subtelomeric regions in different eukaryotes is the presence of long arrays of tandemly repeated satellite sequences. However,...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Genetics Society of America
2011
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3276127/ https://www.ncbi.nlm.nih.gov/pubmed/22384321 http://dx.doi.org/10.1534/g3.111.000125 |
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author | Torres, Giovana A. Gong, Zhiyun Iovene, Marina Hirsch, Cory D. Buell, C. Robin Bryan, Glenn J. Novák, Petr Macas, Jiří Jiang, Jiming |
author_facet | Torres, Giovana A. Gong, Zhiyun Iovene, Marina Hirsch, Cory D. Buell, C. Robin Bryan, Glenn J. Novák, Petr Macas, Jiří Jiang, Jiming |
author_sort | Torres, Giovana A. |
collection | PubMed |
description | Subtelomeric domains immediately adjacent to telomeres represent one of the most dynamic and rapidly evolving regions in eukaryotic genomes. A common feature associated with subtelomeric regions in different eukaryotes is the presence of long arrays of tandemly repeated satellite sequences. However, studies on molecular organization and evolution of subtelomeric repeats are rare. We isolated two subtelomeric repeats, CL14 and CL34, from potato (Solanum tuberosum). The CL14 and CL34 repeats are organized as independent long arrays, up to 1-3 Mb, of 182 bp and 339 bp monomers, respectively. The CL14 and CL34 repeat arrays are directly connected with the telomeric repeats at some chromosomal ends. The CL14 repeat was detected at the subtelomeric regions among highly diverged Solanum species, including tomato (Solanum lycopersicum). In contrast, CL34 was only found in potato and its closely related species. Interestingly, the CL34 repeat array was always proximal to the telomeres when both CL14 and CL34 were found at the same chromosomal end. In addition, the CL34 repeat family showed more sequence variability among monomers compared with the CL14 repeat family. We conclude that the CL34 repeat family emerged recently from the subtelomeric regions of potato chromosomes and is rapidly evolving. These results provide further evidence that subtelomeric domains are among the most dynamic regions in eukaryotic genomes. |
format | Online Article Text |
id | pubmed-3276127 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2011 |
publisher | Genetics Society of America |
record_format | MEDLINE/PubMed |
spelling | pubmed-32761272012-03-01 Organization and Evolution of Subtelomeric Satellite Repeats in the Potato Genome Torres, Giovana A. Gong, Zhiyun Iovene, Marina Hirsch, Cory D. Buell, C. Robin Bryan, Glenn J. Novák, Petr Macas, Jiří Jiang, Jiming G3 (Bethesda) Investigation Subtelomeric domains immediately adjacent to telomeres represent one of the most dynamic and rapidly evolving regions in eukaryotic genomes. A common feature associated with subtelomeric regions in different eukaryotes is the presence of long arrays of tandemly repeated satellite sequences. However, studies on molecular organization and evolution of subtelomeric repeats are rare. We isolated two subtelomeric repeats, CL14 and CL34, from potato (Solanum tuberosum). The CL14 and CL34 repeats are organized as independent long arrays, up to 1-3 Mb, of 182 bp and 339 bp monomers, respectively. The CL14 and CL34 repeat arrays are directly connected with the telomeric repeats at some chromosomal ends. The CL14 repeat was detected at the subtelomeric regions among highly diverged Solanum species, including tomato (Solanum lycopersicum). In contrast, CL34 was only found in potato and its closely related species. Interestingly, the CL34 repeat array was always proximal to the telomeres when both CL14 and CL34 were found at the same chromosomal end. In addition, the CL34 repeat family showed more sequence variability among monomers compared with the CL14 repeat family. We conclude that the CL34 repeat family emerged recently from the subtelomeric regions of potato chromosomes and is rapidly evolving. These results provide further evidence that subtelomeric domains are among the most dynamic regions in eukaryotic genomes. Genetics Society of America 2011-07-01 /pmc/articles/PMC3276127/ /pubmed/22384321 http://dx.doi.org/10.1534/g3.111.000125 Text en Copyright © 2011 Torres et al. http://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the terms of the Creative Commons Attribution Unported License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Investigation Torres, Giovana A. Gong, Zhiyun Iovene, Marina Hirsch, Cory D. Buell, C. Robin Bryan, Glenn J. Novák, Petr Macas, Jiří Jiang, Jiming Organization and Evolution of Subtelomeric Satellite Repeats in the Potato Genome |
title | Organization and Evolution of Subtelomeric Satellite Repeats in the Potato Genome |
title_full | Organization and Evolution of Subtelomeric Satellite Repeats in the Potato Genome |
title_fullStr | Organization and Evolution of Subtelomeric Satellite Repeats in the Potato Genome |
title_full_unstemmed | Organization and Evolution of Subtelomeric Satellite Repeats in the Potato Genome |
title_short | Organization and Evolution of Subtelomeric Satellite Repeats in the Potato Genome |
title_sort | organization and evolution of subtelomeric satellite repeats in the potato genome |
topic | Investigation |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3276127/ https://www.ncbi.nlm.nih.gov/pubmed/22384321 http://dx.doi.org/10.1534/g3.111.000125 |
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