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The fate of ribosomal RNA genes in spontaneous polyploid dogrose hybrids [Rosa L. sect. Caninae (DC.) Ser.] exhibiting non‐symmetrical meiosis
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Zeitschriftentitel: | The Plant Journal |
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Personen und Körperschaften: | , , , , , |
In: | The Plant Journal, 94, 2018, 1, S. 77-90 |
Format: | E-Article |
Sprache: | Englisch |
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Wiley
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author_facet |
Herklotz, Veit Kovařík, Aleš Lunerová, Jana Lippitsch, Susan Groth, Marco Ritz, Christiane M. Herklotz, Veit Kovařík, Aleš Lunerová, Jana Lippitsch, Susan Groth, Marco Ritz, Christiane M. |
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author |
Herklotz, Veit Kovařík, Aleš Lunerová, Jana Lippitsch, Susan Groth, Marco Ritz, Christiane M. |
spellingShingle |
Herklotz, Veit Kovařík, Aleš Lunerová, Jana Lippitsch, Susan Groth, Marco Ritz, Christiane M. The Plant Journal The fate of ribosomal RNA genes in spontaneous polyploid dogrose hybrids [Rosa L. sect. Caninae (DC.) Ser.] exhibiting non‐symmetrical meiosis Cell Biology Plant Science Genetics |
author_sort |
herklotz, veit |
spelling |
Herklotz, Veit Kovařík, Aleš Lunerová, Jana Lippitsch, Susan Groth, Marco Ritz, Christiane M. 0960-7412 1365-313X Wiley Cell Biology Plant Science Genetics http://dx.doi.org/10.1111/tpj.13843 <jats:title>Summary</jats:title><jats:p>Dogroses represent an exceptional system for studying the effects of genome doubling and hybridization: their asymmetrical meiosis enables recombination in bi‐parentally inherited chromosomes but prevents it in maternally inherited ones. We employed fluorescent <jats:italic>in situ</jats:italic> hybridization, genome skimming, amplicon sequencing of genomic and cDNA as well as conventional cloning of nuclear ribosomal DNA in two phylogenetically distinct pentaploid (2<jats:italic>n</jats:italic> = <jats:italic>5x</jats:italic> = 35) species, <jats:italic>Rosa canina</jats:italic> and <jats:italic>Rosa inodora</jats:italic>, and their naturally occurring reciprocal hybrids, <jats:italic>Rosa dumalis</jats:italic> (<jats:italic>5x</jats:italic>) and <jats:italic>Rosa agrestis</jats:italic> (<jats:italic>5x, 6x</jats:italic>). Both progenitor species differed in composition, meiotic behaviour and expression of rDNA loci: <jats:italic>R. canina</jats:italic> (five 18S and 5–8 5S loci) was dominated by the Canina ribotypes, but <jats:italic>R. inodora</jats:italic> (four 18S loci and 7–8 5S loci) by the Rubiginosa ribotype. The co‐localized 5S/18S loci occurred on either bivalent‐forming (<jats:italic>R. canina</jats:italic>) or univalent‐forming (<jats:italic>R. inodora</jats:italic>) chromosomes. Ribosomal DNA loci were additively inherited; however, the Canina ribotypes were dominantly expressed, even in genotypes with relatively low copy number of these genes. Moreover, we observed rDNA homogenization towards the paternally transmitted Canina ribotype in <jats:italic>6x R. agrestis</jats:italic>. The here‐observed variation in arrangement and composition of rDNA types between <jats:italic>R. canina</jats:italic> and <jats:italic>R. inodora</jats:italic> suggests the involvement of different genomes in bivalent formation. This results supports the hypothesis that the asymmetrical meiosis arose at least twice by independent ancient hybridization events.</jats:p> The fate of ribosomal <scp>RNA</scp> genes in spontaneous polyploid dogrose hybrids [<i>Rosa</i> L. sect. <i>Caninae</i> (<scp>DC</scp>.) Ser.] exhibiting non‐symmetrical meiosis The Plant Journal |
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10.1111/tpj.13843 |
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title |
The fate of ribosomal RNA genes in spontaneous polyploid dogrose hybrids [Rosa L. sect. Caninae (DC.) Ser.] exhibiting non‐symmetrical meiosis |
title_unstemmed |
The fate of ribosomal RNA genes in spontaneous polyploid dogrose hybrids [Rosa L. sect. Caninae (DC.) Ser.] exhibiting non‐symmetrical meiosis |
title_full |
The fate of ribosomal RNA genes in spontaneous polyploid dogrose hybrids [Rosa L. sect. Caninae (DC.) Ser.] exhibiting non‐symmetrical meiosis |
title_fullStr |
The fate of ribosomal RNA genes in spontaneous polyploid dogrose hybrids [Rosa L. sect. Caninae (DC.) Ser.] exhibiting non‐symmetrical meiosis |
title_full_unstemmed |
The fate of ribosomal RNA genes in spontaneous polyploid dogrose hybrids [Rosa L. sect. Caninae (DC.) Ser.] exhibiting non‐symmetrical meiosis |
title_short |
The fate of ribosomal RNA genes in spontaneous polyploid dogrose hybrids [Rosa L. sect. Caninae (DC.) Ser.] exhibiting non‐symmetrical meiosis |
title_sort |
the fate of ribosomal <scp>rna</scp> genes in spontaneous polyploid dogrose hybrids [<i>rosa</i> l. sect. <i>caninae</i> (<scp>dc</scp>.) ser.] exhibiting non‐symmetrical meiosis |
topic |
Cell Biology Plant Science Genetics |
url |
http://dx.doi.org/10.1111/tpj.13843 |
publishDate |
2018 |
physical |
77-90 |
description |
<jats:title>Summary</jats:title><jats:p>Dogroses represent an exceptional system for studying the effects of genome doubling and hybridization: their asymmetrical meiosis enables recombination in bi‐parentally inherited chromosomes but prevents it in maternally inherited ones. We employed fluorescent <jats:italic>in situ</jats:italic> hybridization, genome skimming, amplicon sequencing of genomic and cDNA as well as conventional cloning of nuclear ribosomal DNA in two phylogenetically distinct pentaploid (2<jats:italic>n</jats:italic> = <jats:italic>5x</jats:italic> = 35) species, <jats:italic>Rosa canina</jats:italic> and <jats:italic>Rosa inodora</jats:italic>, and their naturally occurring reciprocal hybrids, <jats:italic>Rosa dumalis</jats:italic> (<jats:italic>5x</jats:italic>) and <jats:italic>Rosa agrestis</jats:italic> (<jats:italic>5x, 6x</jats:italic>). Both progenitor species differed in composition, meiotic behaviour and expression of rDNA loci: <jats:italic>R. canina</jats:italic> (five 18S and 5–8 5S loci) was dominated by the Canina ribotypes, but <jats:italic>R. inodora</jats:italic> (four 18S loci and 7–8 5S loci) by the Rubiginosa ribotype. The co‐localized 5S/18S loci occurred on either bivalent‐forming (<jats:italic>R. canina</jats:italic>) or univalent‐forming (<jats:italic>R. inodora</jats:italic>) chromosomes. Ribosomal DNA loci were additively inherited; however, the Canina ribotypes were dominantly expressed, even in genotypes with relatively low copy number of these genes. Moreover, we observed rDNA homogenization towards the paternally transmitted Canina ribotype in <jats:italic>6x R. agrestis</jats:italic>. The here‐observed variation in arrangement and composition of rDNA types between <jats:italic>R. canina</jats:italic> and <jats:italic>R. inodora</jats:italic> suggests the involvement of different genomes in bivalent formation. This results supports the hypothesis that the asymmetrical meiosis arose at least twice by independent ancient hybridization events.</jats:p> |
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author | Herklotz, Veit, Kovařík, Aleš, Lunerová, Jana, Lippitsch, Susan, Groth, Marco, Ritz, Christiane M. |
author_facet | Herklotz, Veit, Kovařík, Aleš, Lunerová, Jana, Lippitsch, Susan, Groth, Marco, Ritz, Christiane M., Herklotz, Veit, Kovařík, Aleš, Lunerová, Jana, Lippitsch, Susan, Groth, Marco, Ritz, Christiane M. |
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description | <jats:title>Summary</jats:title><jats:p>Dogroses represent an exceptional system for studying the effects of genome doubling and hybridization: their asymmetrical meiosis enables recombination in bi‐parentally inherited chromosomes but prevents it in maternally inherited ones. We employed fluorescent <jats:italic>in situ</jats:italic> hybridization, genome skimming, amplicon sequencing of genomic and cDNA as well as conventional cloning of nuclear ribosomal DNA in two phylogenetically distinct pentaploid (2<jats:italic>n</jats:italic> = <jats:italic>5x</jats:italic> = 35) species, <jats:italic>Rosa canina</jats:italic> and <jats:italic>Rosa inodora</jats:italic>, and their naturally occurring reciprocal hybrids, <jats:italic>Rosa dumalis</jats:italic> (<jats:italic>5x</jats:italic>) and <jats:italic>Rosa agrestis</jats:italic> (<jats:italic>5x, 6x</jats:italic>). Both progenitor species differed in composition, meiotic behaviour and expression of rDNA loci: <jats:italic>R. canina</jats:italic> (five 18S and 5–8 5S loci) was dominated by the Canina ribotypes, but <jats:italic>R. inodora</jats:italic> (four 18S loci and 7–8 5S loci) by the Rubiginosa ribotype. The co‐localized 5S/18S loci occurred on either bivalent‐forming (<jats:italic>R. canina</jats:italic>) or univalent‐forming (<jats:italic>R. inodora</jats:italic>) chromosomes. Ribosomal DNA loci were additively inherited; however, the Canina ribotypes were dominantly expressed, even in genotypes with relatively low copy number of these genes. Moreover, we observed rDNA homogenization towards the paternally transmitted Canina ribotype in <jats:italic>6x R. agrestis</jats:italic>. The here‐observed variation in arrangement and composition of rDNA types between <jats:italic>R. canina</jats:italic> and <jats:italic>R. inodora</jats:italic> suggests the involvement of different genomes in bivalent formation. This results supports the hypothesis that the asymmetrical meiosis arose at least twice by independent ancient hybridization events.</jats:p> |
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spelling | Herklotz, Veit Kovařík, Aleš Lunerová, Jana Lippitsch, Susan Groth, Marco Ritz, Christiane M. 0960-7412 1365-313X Wiley Cell Biology Plant Science Genetics http://dx.doi.org/10.1111/tpj.13843 <jats:title>Summary</jats:title><jats:p>Dogroses represent an exceptional system for studying the effects of genome doubling and hybridization: their asymmetrical meiosis enables recombination in bi‐parentally inherited chromosomes but prevents it in maternally inherited ones. We employed fluorescent <jats:italic>in situ</jats:italic> hybridization, genome skimming, amplicon sequencing of genomic and cDNA as well as conventional cloning of nuclear ribosomal DNA in two phylogenetically distinct pentaploid (2<jats:italic>n</jats:italic> = <jats:italic>5x</jats:italic> = 35) species, <jats:italic>Rosa canina</jats:italic> and <jats:italic>Rosa inodora</jats:italic>, and their naturally occurring reciprocal hybrids, <jats:italic>Rosa dumalis</jats:italic> (<jats:italic>5x</jats:italic>) and <jats:italic>Rosa agrestis</jats:italic> (<jats:italic>5x, 6x</jats:italic>). Both progenitor species differed in composition, meiotic behaviour and expression of rDNA loci: <jats:italic>R. canina</jats:italic> (five 18S and 5–8 5S loci) was dominated by the Canina ribotypes, but <jats:italic>R. inodora</jats:italic> (four 18S loci and 7–8 5S loci) by the Rubiginosa ribotype. The co‐localized 5S/18S loci occurred on either bivalent‐forming (<jats:italic>R. canina</jats:italic>) or univalent‐forming (<jats:italic>R. inodora</jats:italic>) chromosomes. Ribosomal DNA loci were additively inherited; however, the Canina ribotypes were dominantly expressed, even in genotypes with relatively low copy number of these genes. Moreover, we observed rDNA homogenization towards the paternally transmitted Canina ribotype in <jats:italic>6x R. agrestis</jats:italic>. The here‐observed variation in arrangement and composition of rDNA types between <jats:italic>R. canina</jats:italic> and <jats:italic>R. inodora</jats:italic> suggests the involvement of different genomes in bivalent formation. This results supports the hypothesis that the asymmetrical meiosis arose at least twice by independent ancient hybridization events.</jats:p> The fate of ribosomal <scp>RNA</scp> genes in spontaneous polyploid dogrose hybrids [<i>Rosa</i> L. sect. <i>Caninae</i> (<scp>DC</scp>.) Ser.] exhibiting non‐symmetrical meiosis The Plant Journal |
spellingShingle | Herklotz, Veit, Kovařík, Aleš, Lunerová, Jana, Lippitsch, Susan, Groth, Marco, Ritz, Christiane M., The Plant Journal, The fate of ribosomal RNA genes in spontaneous polyploid dogrose hybrids [Rosa L. sect. Caninae (DC.) Ser.] exhibiting non‐symmetrical meiosis, Cell Biology, Plant Science, Genetics |
title | The fate of ribosomal RNA genes in spontaneous polyploid dogrose hybrids [Rosa L. sect. Caninae (DC.) Ser.] exhibiting non‐symmetrical meiosis |
title_full | The fate of ribosomal RNA genes in spontaneous polyploid dogrose hybrids [Rosa L. sect. Caninae (DC.) Ser.] exhibiting non‐symmetrical meiosis |
title_fullStr | The fate of ribosomal RNA genes in spontaneous polyploid dogrose hybrids [Rosa L. sect. Caninae (DC.) Ser.] exhibiting non‐symmetrical meiosis |
title_full_unstemmed | The fate of ribosomal RNA genes in spontaneous polyploid dogrose hybrids [Rosa L. sect. Caninae (DC.) Ser.] exhibiting non‐symmetrical meiosis |
title_short | The fate of ribosomal RNA genes in spontaneous polyploid dogrose hybrids [Rosa L. sect. Caninae (DC.) Ser.] exhibiting non‐symmetrical meiosis |
title_sort | the fate of ribosomal <scp>rna</scp> genes in spontaneous polyploid dogrose hybrids [<i>rosa</i> l. sect. <i>caninae</i> (<scp>dc</scp>.) ser.] exhibiting non‐symmetrical meiosis |
title_unstemmed | The fate of ribosomal RNA genes in spontaneous polyploid dogrose hybrids [Rosa L. sect. Caninae (DC.) Ser.] exhibiting non‐symmetrical meiosis |
topic | Cell Biology, Plant Science, Genetics |
url | http://dx.doi.org/10.1111/tpj.13843 |