ArticleGenetics2005
Rapid concerted evolution of nuclear ribosomal DNA in two Tragopogon allopolyploids of recent and recurrent origin.
Article in Genetics, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 76 papers.
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76 citing papers in PubMed.
- Distinct evolutionary trajectories of gene duplication modes in 40 diploid cotton genomes.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2026Article
- Nucleolar dominance arises in Spartina homoploid hybrids and persists after allopolyploidization.The Plant journal : for cell and molecular biology · 2026Article
- Allotetraploid Origin and Putative Ancient Introgression inEcology and evolution · 2025Article
- Phylotranscriptomic analyses reveal the evolutionary complexity of Paris L. (Melanthiaceae), a morphologically distinctive genus with significant pharmaceutical importance.Annals of botany · 2024Article
- Does time matter? Intraspecific diversity of ribosomal RNA genes in lineages of the allopolyploid model grass Brachypodium hybridum with different evolutionary ages.BMC plant biology · 2024Article
- Intragenomic rDNA variation - the product of concerted evolution, mutation, or something in between?Heredity · 2023Review
- Article
- Polyploidy on islands - concerted evolution and gene loss amid chromosomal stasis.Annals of botany · 2023Article
- Hybridization and diversity of aquatic macrophyte Sparganium L. (Typhaceae) as revealed by high-throughput nrDNA sequencing.Scientific reports · 2022Article
- Mega-sized pericentromeric blocks of simple telomeric repeats and their variants reveal patterns of chromosome evolution in ancient Cycadales genomes.The Plant journal : for cell and molecular biology · 2022Article
- Lack of ITS sequence homogenization in Erysimum species (Brassicaceae) with different ploidy levels.Scientific reports · 2022Article
- Repeat Dynamics across Timescales: A Perspective from Sibling Allotetraploid Marsh Orchids (Dactylorhiza majalis s.l.).Molecular biology and evolution · 2022Article
- Global Patterns of Subgenome Evolution in Organelle-Targeted Genes of Six Allotetraploid Angiosperms.Molecular biology and evolution · 2022Article
- Tracing the Evolution of the Angiosperm Genome from the Cytogenetic Point of View.Plants (Basel, Switzerland) · 2022Review
- Morphological and Genome-Wide Evidence of Homoploid Hybridisation inPlants (Basel, Switzerland) · 2022Article
- To Be or Not to Be Expressed: The First Evidence of a Nucleolar Dominance Tissue-Specificity inFrontiers in plant science · 2021Article
- Chromosome instabilities in resynthesized Brassica napus revealed by FISH.Journal of applied genetics · 2020Article
- The fate of 35S rRNA genes in the allotetraploid grass Brachypodium hybridum.The Plant journal : for cell and molecular biology · 2020Article
- Article
- Plastome phylogenomics, biogeography, and clade diversification of Paris (Melanthiaceae).BMC plant biology · 2019Article
16 more citing papers are in PubMed but not listed here.
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9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
We investigated concerted evolution of rRNA genes in multiple populations of Tragopogon mirus and T. miscellus, two allotetraploids that formed recurrently within the last 80 years following the introduction of three diploids (T. dubius, T. pratensis, and T. porrifolius) from Europe to North America. Using the earliest herbarium specimens of the allotetraploids (1949 and 1953) to represent the genomic condition near the time of polyploidization, we found that the parental rDNA repeats were inherited in roughly equal numbers. In contrast, in most present-day populations of both tetraploids, the rDNA of T. dubius origin is reduced and may occupy as little as 5% of total rDNA in some individuals. However, in two populations of T. mirus the repeats of T. dubius origin outnumber the repeats of the second diploid parent (T. porrifolius), indicating bidirectional concerted evolution within a single species. In plants of T. miscellus having a low rDNA contribution from T. dubius, the rDNA of T. dubius was nonetheless expressed. We have apparently caught homogenization of rDNA repeats (concerted evolution) in the act, although it has not proceeded to completion in any allopolyploid population yet examined.
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