ArticleChromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology1999
The 5S rRNA gene clusters have a defined orientation toward the nucleolus in Petunia hybrida and Crepis capillaris.
Article in Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology, 1999. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
5 citing papers in PubMed, 20 citations in OpenAlex.
- Efficient Characterization of Tetraploid Watermelon.Plants (Basel, Switzerland) · 2019Article
- Functional repetitive sequences and fragile sites in chromosomes of Lolium perenne L.Protoplasma · 2015Article
- Spatial organization of transcription by RNA polymerase III.Nucleic acids research · 2006Review
- Nucleolar clustering of dispersed tRNA genes.Science (New York, N.Y.) · 2003Article
- Chromosome no. 1 of Crepis capillaris shows defined 3D-shapes in mitotic prophase.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2000Article
Corrections and comments
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Authors and funding
5 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The 3D localization of the 5S ribosomal RNA genes was studied in cells of the cortex zone of roots in the plant species Petunia hybrida inbred line V26 and in Crepis capillaris. The analysis was carried out on interphase nuclei (both species) and on prophase nuclei (C. capillaris). The 5S ribosomal RNA genes were detected by fluorescence in-situ hybridization and 3D images were obtained by confocal scanning laser microscopy. In both plant species, the 5S ribosomal genes were localized at the short arm of chromosome 2, which, in both plants, also possesses a satellite at its end. Statistical and visual analysis of interphase nuclei showed that: (1) there is a preference for an association of the 5S rRNA gene clusters of the two homologous chromosomes, and (2) the 5S rRNA gene clusters in both species had a preserved spatial position within the interphase nucleus and they tended to be polarized with respect to their neighbouring cells (i.e. a relic telophase orientation). Moreover, tracing of the chromosomal segment between the 5S loci and the active NOR revealed that the homologous chromosomes during early/mid prophase were aligned and that they entered the nucleolus side by side, at least for these chromosome segments. We interpret our data to mean that location of 5S rRNA near the nucleolus favours their functioning in ribosome biogenesis.
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