ArticleCurrent genetics2008
Recurrent invasion of mitochondrial group II introns in specimens of Pylaiella littoralis (brown alga), collected worldwide.
Article in Current genetics, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed, 16 citations in OpenAlex.
- Complete organellar genomes of Cystophora brownii: Insights into mitochondrial and plastid structure and evolution in brown algae.Journal of phycology · 2026Article
- Protein-free catalysis of DNA hydrolysis and self-integration by a ribozyme.Nucleic acids research · 2025Article
- Categorizing 161 plant (streptophyte) mitochondrial group II introns into 29 families of related paralogues finds only limited links between intron mobility and intron-borne maturases.BMC ecology and evolution · 2023Article
- Group II intron and repeat-rich red algal mitochondrial genomes demonstrate the dynamic recent history of autocatalytic RNAs.BMC biology · 2022Article
- Genomic Rearrangements and Sequence Evolution across Brown Algal Organelles.Genome biology and evolution · 2021Article
- A pangenomic analysis of the Nannochloropsis organellar genomes reveals novel genetic variations in key metabolic genes.BMC genomics · 2014Article
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Authors and funding
4 authors at 4 institutions in 2 countries.
Funding
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Abstract
The mitochondrial genome of a filamentous brown alga Pylaiella littoralis (strain CCMP 1907) has been reported to contain four group IIB introns in the LSU rRNA gene and three group IIA introns in the cox1 gene. We found extreme variability in the number of group II introns for these two genes by analyzing eight P. littoralis specimens collected at worldwide habitats. The first intron of the LSU rRNA gene from a specimen collected in France and the fourth intron from a specimen harvested in Japan exhibited an exceptionally long evolutionary distance when compared with the cognate introns found in P. littoralis specimens. Moreover, these introns harbored an intact or nearly intact tripartite ORF, suggesting they are the result of a recent invasion of cognate introns. Based on the fact that many of the target sites were intronless, we propose that opportunity of intron infection is the bottleneck step of the group II intron cycle which consists of invasion, degeneration, and complete loss from the target site.
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