ArticlePlant molecular biology2004
Organization, differential expression and methylation of rDNA in artificial Solanum allopolyploids.
Article in Plant molecular biology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.
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Who cites it
38 citing papers in PubMed, 78 citations in OpenAlex.
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- Uniparental expression of ribosomal RNA in ×Frontiers in plant science · 2023Article
- Tracing the Evolution of the Angiosperm Genome from the Cytogenetic Point of View.Plants (Basel, Switzerland) · 2022Review
- Fine structure and transcription dynamics of bread wheat ribosomal DNA loci deciphered by a multi-omics approach.The plant genome · 2022Article
- Extensive nrDNA ITS polymorphism inFrontiers in plant science · 2022Article
- Structure and Methylation of 35S rDNA in AllopolyploidsFrontiers in plant science · 2022Article
- Tissue and/or developmental stage specific methylation of nrDNA in Capsicum annuum.Journal of plant research · 2021Article
- To Be or Not to Be Expressed: The First Evidence of a Nucleolar Dominance Tissue-Specificity inFrontiers in plant science · 2021Article
- Personal Perspectives on Plant Ribosomal RNA Genes Research: From Precursor-rRNA to Molecular Evolution.Frontiers in plant science · 2021Review
- The fate of 35S rRNA genes in the allotetraploid grass Brachypodium hybridum.The Plant journal : for cell and molecular biology · 2020Article
- Dynamic changes in histone modification are associated with upregulation of Hsf and rRNA genes during heat stress in maize seedlings.Protoplasma · 2019Article
- Intragenomic heterogeneity of intergenic ribosomal DNA spacers in Cucurbita moschata is determined by DNA minisatellites with variable potential to form non-canonical DNA conformations.DNA research : an international journal for rapid publication of reports on genes and genomes · 2019Article
- Ribosomal DNA loci derived from Brachypodium stacei are switched off for major parts of the life cycle of Brachypodium hybridum.Journal of experimental botany · 2019Article
- Unique Epigenetic Features of Ribosomal RNA Genes (rDNA) in Early Diverging Plants (Bryophytes).Frontiers in plant science · 2019Article
- Evolutional dynamics of 45S and 5S ribosomal DNA in ancient allohexaploid Atropa belladonna.BMC plant biology · 2017Article
- Comparative genetic analysis of the 45S rDNA intergenic spacers from three Saccharum species.PloS one · 2017Article
- Diversity and Inheritance of Intergenic Spacer Sequences of 45S Ribosomal DNA among Accessions of Brassica oleracea L. var. capitata.International journal of molecular sciences · 2015Article
- Article
- Molecular organization of the 25S-18S rDNA IGS of Fagus sylvatica and Quercus suber: a comparative analysis.PloS one · 2014Article
- Article
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Authors and funding
5 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Uniparental activity of ribosomal RNA genes (rDNA) in interspecific hybrids is known as nucleolar dominance (ND). To see if difference in rDNA intergenic spacers (IGS) might be correlated with ND, we have used artificial Solanum allopolyploids and back-crossed lines. Combining fluorescence in situ hybridization and quantification of the level of the rRNA precursor by real-time PCR, we demonstrated that an expression hierarchy exists: In leaves, roots, and petals of the respective allopolyploids, rDNA of S lycopersicum (tomato) dominates over rDNA of S. tuberosum (potato), whereas rDNA of S. tuberosum dominates over that of the wild species S. bulbocastanum . Also in a monosomic addition line carrying only one NOR-bearing chromosome of tomato in a potato background the dominance effect was maintained. These results demonstrate that there is possible correlation between transcriptional dominance and number of conservative elements downstream of the transcription start in the Solanum rDNA. In anthers and callus tissues under-dominant rDNA was slightly (S. lycopersicum/S. tuberosum) or strongly (S. tuberosum/S. bulbocastanum) expressed indicating developmental modulation of ND. In leaves and petals, repression of the respective parental rDNA correlated with cytosine methylation at certain sites conserved in the IGS, whereas activation of under-dominant rDNA in anthers and callus tissues was not accompanied by considerable changes of the methylation pattern.
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