ArticleJournal of plant research2006
Evolutionary origin of a plant mitochondrial group II intron from a reverse transcriptase/maturase-encoding ancestor.
Article in Journal of plant research, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed, 25 citations in OpenAlex.
- A record-setting mitogenome in the holoparasitic plant Balanophora yakushimensis accompanied by exceptional loss of organellar DNA repair and recombination genes.BMC biology · 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
- Complete Chloroplast Genomes Provide Insights Into Evolution and Phylogeny ofFrontiers in plant science · 2022Article
- ZmnMAT1, a nuclear-encoded type I maturase, is required for the splicing of mitochondrialFrontiers in plant science · 2022Article
- The ChloroplastCells · 2021Review
- Molecular and Functional Diversity of RNA Editing in Plant Mitochondria.Molecular biotechnology · 2018Review
- Proteomic analysis of early salt stress responsive proteins in alfalfa roots and shoots.Proteome science · 2017Article
- The Reverse Transcriptase/RNA Maturase Protein MatR Is Required for the Splicing of Various Group II Introns in Brassicaceae Mitochondria.The Plant cell · 2016Article
- Localized Retroprocessing as a Model of Intron Loss in the Plant Mitochondrial Genome.Genome biology and evolution · 2016Article
- AtnMat2, a nuclear-encoded maturase required for splicing of group-II introns in Arabidopsis mitochondria.RNA (New York, N.Y.) · 2009Article
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Authors and funding
4 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Group II introns are widespread in plant cell organelles. In vivo, most if not all plant group II introns do not self-splice but require the assistance of proteinaceous splicing factors. In some cases, a splicing factor (also referred to as maturase) is encoded within the intronic sequence and produced by translation of the (excised) intron RNA. However, most present-day group II introns in plant organellar genomes do not contain open reading frames (ORFs) for splicing factors, and their excision may depend on proteins encoded by other organellar introns or splicing factors encoded in the nuclear genome. Whether or not the ancestors of all of these noncoding organellar introns originally contained ORFs for maturases is currently unknown. Here we show that a noncoding intron in the mitochondrial cox2 gene of seed plants is likely to be derived from an ancestral reverse transcriptase/maturase-encoding form. We detected remnants of maturase and reverse transcriptase sequences in the 2.7 kb cox2 intron of Ginkgo biloba, the only living species of an ancient gymnosperm lineage, suggesting that the intron originally harbored a splicing factor. This finding supports the earlier proposed hypothesis that the ancient group II introns that invaded organellar genomes were autonomous genetic entities in that they encoded the factor(s) required for their own excision and mobility.
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