Sequencing of the Arabidopsis NOR2 reveals its distinct organization and tissue-specific rRNA ribosomal variants

Jason Sims (), Giovanni Sestini, Christiane Elgert, Arndt von Haeseler and Peter Schlögelhofer ()
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Jason Sims: University of Vienna, Vienna BioCenter
Giovanni Sestini: University of Vienna, Vienna BioCenter
Christiane Elgert: University of Vienna and Medical University of Vienna, Vienna BioCenter
Arndt von Haeseler: University of Vienna and Medical University of Vienna, Vienna BioCenter
Peter Schlögelhofer: University of Vienna, Vienna BioCenter

Nature Communications, 2021, vol. 12, issue 1, 1-13

Abstract: Abstract Despite vast differences between organisms, some characteristics of their genomes are conserved, such as the nucleolus organizing region (NOR). The NOR is constituted of multiple, highly repetitive rDNA genes, encoding the catalytic ribosomal core RNAs which are transcribed from 45S rDNA units. Their precise sequence information and organization remain uncharacterized. Here, using a combination of long- and short-read sequencing technologies we assemble contigs of the Arabidopsis NOR2 rDNA domain. We identify several expressed rRNA gene variants which are integrated into translating ribosomes in a tissue-specific manner. These findings support the concept of tissue specific ribosome subpopulations that differ in their rRNA composition and provide insights into the higher order organization of NOR2.

Date: 2021
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Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-020-20728-6

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DOI: 10.1038/s41467-020-20728-6

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