ArticlePloS one2012
The mitochondrial genome of the lycophyte Huperzia squarrosa: the most archaic form in vascular plants.
Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.
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22 citing papers in PubMed, 55 citations in OpenAlex.
- The first complete mitochondrial genome assembly and comparative analysis of the fern Blechnaceae family:Frontiers in plant science · 2025Article
- Recurrent evolutionary switches of mitochondrial cytochrome c maturation systems in Archaeplastida.Nature communications · 2024Article
- Comprehensive analysis of theFrontiers in plant science · 2024Article
- Rickettsial DNA and a trans-splicing rRNA group I intron in the unorthodox mitogenome of the fern Haplopteris ensiformis.Communications biology · 2023Article
- Breaking the limits - multichromosomal structure of an early eudicot Pulsatilla patens mitogenome reveals extensive RNA-editing, longest repeats and chloroplast derived regions among sequenced land plant mitogenomes.BMC plant biology · 2022Article
- The complete mitochondrial genome of Cycas debaoensis revealed unexpected static evolution in gymnosperm species.PloS one · 2021Article
- A functional twintron, 'zombie' twintrons and a hypermobile group II intron invading itself in plant mitochondria.Nucleic acids research · 2020Article
- Maternal Inheritance of U's Triangle and Evolutionary Process ofFrontiers in plant science · 2020Article
- Recent advances in understanding mitochondrial genome diversity.F1000Research · 2020Review
- Lycophyte plastid genomics: extreme variation in GC, gene and intron content and multiple inversions between a direct and inverted orientation of the rRNA repeat.The New phytologist · 2019Article
- Article
- Monilophyte mitochondrial rps1 genes carry a unique group II intron that likely originated from an ancient paralog in rpl2.RNA (New York, N.Y.) · 2016Article
- Convergent Evolution of Fern-Specific Mitochondrial Group II Intron atp1i361g2 and Its Ancient Source Paralogue rps3i249g2 and Independent Losses of Intron and RNA Editing among Pteridaceae.Genome biology and evolution · 2016Article
- Organellar phylogenomics of an emerging model system: Sphagnum (peatmoss).Annals of botany · 2016Article
- The mitochondrial genome map of Nelumbo nucifera reveals ancient evolutionary features.Scientific reports · 2016Article
- Reverse U-to-C editing exceeds C-to-U RNA editing in some ferns - a monilophyte-wide comparison of chloroplast and mitochondrial RNA editing suggests independent evolution of the two processes in both organelles.BMC evolutionary biology · 2016Article
- The evolutionary conservation of rps3 introns and rps19-rps3-rpl16 gene cluster in Adiantum capillus-veneris mitochondria.Current genetics · 2016Article
- Variable frequency of plastid RNA editing among ferns and repeated loss of uridine-to-cytidine editing from vascular plants.PloS one · 2015Article
- Organellar genomes of the four-toothed moss, Tetraphis pellucida.BMC genomics · 2014Article
- Evolution of plant mitochondrial intron-encoded maturases: frequent lineage-specific loss and recurrent intracellular transfer to the nucleus.Journal of molecular evolution · 2013Article
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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
Mitochondrial genomes have maintained some bacterial features despite their residence within eukaryotic cells for approximately two billion years. One of these features is the frequent presence of polycistronic operons. In land plants, however, it has been shown that all sequenced vascular plant chondromes lack large polycistronic operons while bryophyte chondromes have many of them. In this study, we provide the completely sequenced mitochondrial genome of a lycophyte, from Huperzia squarrosa, which is a member of the sister group to all other vascular plants. The genome, at a size of 413,530 base pairs, contains 66 genes and 32 group II introns. In addition, it has 69 pseudogene fragments for 24 of the 40 protein- and rRNA-coding genes. It represents the most archaic form of mitochondrial genomes of all vascular plants. In particular, it has one large conserved gene cluster containing up to 10 ribosomal protein genes, which likely represents a polycistronic operon but has been disrupted and greatly reduced in the chondromes of other vascular plants. It also has the least rearranged gene order in comparison to the chondromes of other vascular plants. The genome is ancestral in vascular plants in several other aspects: the gene content resembling those of charophytes and most bryophytes, all introns being cis-spliced, a low level of RNA editing, and lack of foreign DNA of chloroplast or nuclear origin.
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