ArticlePloS one2017
Comparative genetic analysis of the 45S rDNA intergenic spacers from three Saccharum species.
Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Ribosome Heterogeneity in Plants: The Causes of This Phenomenon and Its Implications on Gene Expression.Plants (Basel, Switzerland) · 2026Review
- Cytotype classification and genetic diversity of Platostoma palustre revealed by rDNA localization and chloroplast genome.BMC genomics · 2025Article
- Research Progress on 35S rDNA and 5S rDNA in Sugarcane: Challenges and Prospects.International journal of molecular sciences · 2025Review
- Copy number and sequence variation in rDNA of Daphnia pulex from natural populations: insights from whole-genome sequencing.G3 (Bethesda, Md.) · 2024Article
- Genomic and cytogenetic analyses reveal satellite repeat signature in allotetraploid okra (Abelmoschus esculentus).BMC plant biology · 2024Article
- The Divergence of Chromosome Structures and 45S Ribosomal DNA Organization inPlants (Basel, Switzerland) · 2022Article
- Structure and Methylation of 35S rDNA in AllopolyploidsFrontiers in plant science · 2022Article
- The Ribosomal DNA Loci of the Ancient MonocotFrontiers in plant science · 2022Article
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Authors and funding
9 authors.
Funding
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Abstract
The 45S ribosomal DNA (rDNA) units are separated by an intergenic spacer (IGS) containing the signals for transcription and processing of rRNAs. For the first time, we sequenced and analyzed the entire IGS region from three original species within the genus Saccharum, including S. spontaneum, S. robustum, and S. officinarum in this study. We have compared the IGS organization within three original species of the genus Saccharum. The IGS of these three original species showed similar overall organizations comprised of putative functional elements needed for rRNA gene activity as well as a non-transcribed spacer (NTS), a promoter region, and an external transcribed spacer (ETS). The variability in length of the IGS sequences was assessed at the individual, intraspecies, and interspecies levels of the genus Saccharum, including S. spontaneum, S. robustum, and S. officinarum. The ETS had greater similarity than the NTS across species, but nevertheless exhibited variation in length. Within the IGS of the Saccharum species, base substitutions and copy number variation of sub-repeat were causes of the divergence in IGS sequences. We also identified a significant number of methylation sites. Furthermore, fluorescent in situ hybridization (FISH) co-localization of IGS and pTa71 probes was detected on all representative species of the genus Saccharum tested. Taken together, the results of this study provide a better insight into the structure and organization of the IGS in the genus Saccharum.
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