ArticlePloS one2017
Highly divergent 16S rRNA sequences in ribosomal operons of Scytonema hyalinum (Cyanobacteria).
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 23 papers.
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23 citing papers in PubMed, 93 citations in OpenAlex.
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- Population and herbarium genomics provide a comprehensive framework for a revision of Microcoleus (Cyanobacteria).Journal of phycology · 2026Article
- First records of cyanobacteria and microalgae in sand dunes of the Russian high north: morphological and DNA barcoding evidence.Archives of microbiology · 2026Article
- To multicellularity and back again: Description of two new coccoid genera (Portococcus gen. nov. and Pseudanabaenococcus gen. nov.) in the basal "filamentous" order Pseudanabaenales, Cyanobacteria.Journal of phycology · 2026Article
- A hitchhiker's guide to modern, practical cyanobacterial taxonomy.Journal of phycology · 2025Article
- Kalymmatonema gen. nov. (Scytonemataceae, Cyanobacteria): A desert soil crust genus previously identified as Scytonema hyalinum, with description of seven species new to science.Journal of phycology · 2025Article
- Four novel taxa of cyanobacteria from a unique thermal cave habitat in Vromoner Canyon, Albania.Journal of phycology · 2025Article
- Assessing Human Ribosomal DNA Variation and Its Association With Phenotypic Outcomes.BioEssays : news and reviews in molecular, cellular and developmental biology · 2025Review
- Molecular characterization of two cyanobacterial generitypes from their type localities in Scandinavia.Journal of phycology · 2025Article
- Unexpected Genetic Diversity of Nostocales (Cyanobacteria) Isolated from the Phyllosphere of the Laurel Forests in the Canary Islands (Spain).Microorganisms · 2024Article
- Harnessing the intragenomic variability of rRNA operons to improve differentiation of Vibrio species.Scientific reports · 2024Article
- Population genomics and morphological data bridge the centuries of cyanobacterial taxonomy along the continuum ofiScience · 2024Article
- Occurrence of aetokthonotoxin producer in natural samples - A PCR protocol for easy detection.Harmful algae · 2023Article
- Rare earths stick to rare cyanobacteria: Future potential for bioremediation and recovery of rare earth elements.Frontiers in bioengineering and biotechnology · 2023Article
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- Metagenome Sequencing to Explore Phylogenomics of Terrestrial Cyanobacteria.Microbiology resource announcements · 2021Article
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- Taxonomic resolution of the ribosomal RNA operon in bacteria: implications for its use with long-read sequencing.NAR genomics and bioinformatics · 2020Article
- Implications of sequence variation on the evolution of rRNA.Chromosome research : an international journal on the molecular, supramolecular and evolutionary aspects of chromosome biology · 2019Review
Corrections and comments
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Authors and funding
7 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
A highly divergent 16S rRNA gene was found in one of the five ribosomal operons present in a species complex currently circumscribed as Scytonema hyalinum (Nostocales, Cyanobacteria) using clone libraries. If 16S rRNA sequence macroheterogeneity among ribosomal operons due to insertions, deletions or truncation is excluded, the sequence heterogeneity observed in S. hyalinum was the highest observed in any prokaryotic species thus far (7.3-9.0%). The secondary structure of the 16S rRNA molecules encoded by the two divergent operons was nearly identical, indicating possible functionality. The 23S rRNA gene was examined for a few strains in this complex, and it was also found to be highly divergent from the gene in Type 2 operons (8.7%), and likewise had nearly identical secondary structure between the Type 1 and Type 2 operons. Furthermore, the 16S-23S ITS showed marked differences consistent between operons among numerous strains. Both operons have promoter sequences that satisfy consensus requirements for functional prokaryotic transcription initiation. Horizontal gene transfer from another unknown heterocytous cyanobacterium is considered the most likely explanation for the origin of this molecule, but does not explain the ultimate origin of this sequence, which is very divergent from all 16S rRNA sequences found thus far in cyanobacteria. The divergent sequence is highly conserved among numerous strains of S. hyalinum, suggesting adaptive advantage and selective constraint of the divergent sequence.
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