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Reorganization of wheat and rye genomes in octoploid triticale (× Triticosecale)
The analysis of early generations of triticale showed numerous rearrangements of the genome. Complexed transformation included loss of chromosomes, t-heterochromatin content changes and the emergence of retrotransposons in new locations. This study investigated certain aspects of genomic transformat...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Berlin Heidelberg
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5856900/ https://www.ncbi.nlm.nih.gov/pubmed/29234880 http://dx.doi.org/10.1007/s00425-017-2827-0 |
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author | Kalinka, Anna Achrem, Magdalena |
author_facet | Kalinka, Anna Achrem, Magdalena |
author_sort | Kalinka, Anna |
collection | PubMed |
description | The analysis of early generations of triticale showed numerous rearrangements of the genome. Complexed transformation included loss of chromosomes, t-heterochromatin content changes and the emergence of retrotransposons in new locations. This study investigated certain aspects of genomic transformations in the early generations (F5 and F8) of the primary octoploid triticale derived from the cross of hexaploid wheat with the diploid rye. Most of the plants tested were hypoploid; among eliminated chromosomes were rye chromosomes 4R and 5R and variable number of wheat chromosomes. Wheat chromosomes were eliminated to a higher extent. The lower content of telomeric heterochromatin was also found in rye chromosomes in comparison with parental rye. Studying the location of selected retrotransposons from Ty1-copia and Ty3-gypsy families using fluorescence in situ hybridization revealed additional locations of these retrotransposons that were not present in chromosomes of parental species. ISSR, IRAP and REMAP analyses showed significant changes at the level of specific DNA nucleotide sequences. In most cases, the disappearance of certain types of bands was observed, less frequently new types of bands appeared, not present in parental species. This demonstrates the scale of genome rearrangement and, above all, the elimination of wheat and rye sequences, largely due to the reduction of chromosome number. With regard to the proportion of wheat to rye genome, the rye genome was more affected by the changes, thus this study was focused more on the rye genome. Observations suggest that genome reorganization is not finished in the F5 generation but is still ongoing in the F8 generation. |
format | Online Article Text |
id | pubmed-5856900 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Springer Berlin Heidelberg |
record_format | MEDLINE/PubMed |
spelling | pubmed-58569002018-03-21 Reorganization of wheat and rye genomes in octoploid triticale (× Triticosecale) Kalinka, Anna Achrem, Magdalena Planta Original Article The analysis of early generations of triticale showed numerous rearrangements of the genome. Complexed transformation included loss of chromosomes, t-heterochromatin content changes and the emergence of retrotransposons in new locations. This study investigated certain aspects of genomic transformations in the early generations (F5 and F8) of the primary octoploid triticale derived from the cross of hexaploid wheat with the diploid rye. Most of the plants tested were hypoploid; among eliminated chromosomes were rye chromosomes 4R and 5R and variable number of wheat chromosomes. Wheat chromosomes were eliminated to a higher extent. The lower content of telomeric heterochromatin was also found in rye chromosomes in comparison with parental rye. Studying the location of selected retrotransposons from Ty1-copia and Ty3-gypsy families using fluorescence in situ hybridization revealed additional locations of these retrotransposons that were not present in chromosomes of parental species. ISSR, IRAP and REMAP analyses showed significant changes at the level of specific DNA nucleotide sequences. In most cases, the disappearance of certain types of bands was observed, less frequently new types of bands appeared, not present in parental species. This demonstrates the scale of genome rearrangement and, above all, the elimination of wheat and rye sequences, largely due to the reduction of chromosome number. With regard to the proportion of wheat to rye genome, the rye genome was more affected by the changes, thus this study was focused more on the rye genome. Observations suggest that genome reorganization is not finished in the F5 generation but is still ongoing in the F8 generation. Springer Berlin Heidelberg 2017-12-12 2018 /pmc/articles/PMC5856900/ /pubmed/29234880 http://dx.doi.org/10.1007/s00425-017-2827-0 Text en © The Author(s) 2017 Open AccessThis 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. |
spellingShingle | Original Article Kalinka, Anna Achrem, Magdalena Reorganization of wheat and rye genomes in octoploid triticale (× Triticosecale) |
title | Reorganization of wheat and rye genomes in octoploid triticale (× Triticosecale) |
title_full | Reorganization of wheat and rye genomes in octoploid triticale (× Triticosecale) |
title_fullStr | Reorganization of wheat and rye genomes in octoploid triticale (× Triticosecale) |
title_full_unstemmed | Reorganization of wheat and rye genomes in octoploid triticale (× Triticosecale) |
title_short | Reorganization of wheat and rye genomes in octoploid triticale (× Triticosecale) |
title_sort | reorganization of wheat and rye genomes in octoploid triticale (× triticosecale) |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5856900/ https://www.ncbi.nlm.nih.gov/pubmed/29234880 http://dx.doi.org/10.1007/s00425-017-2827-0 |
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