Related Experiment Video
Updated: Jun 28, 2026

Discrimintion and Mapping of the Primary and Processed Transcripts in Maize Mitochondrion Using a Circular RT-PCR-based Strategy
Published on: July 29, 2019
Molecular evolution of mitochondrial introns in the liverwort Marchantia polymorpha
1Research Institute for Bioresources and Biotechnology, Ishikawa Prefectural University, Ishikawa, Japan. kohyama@ishikawa-pu.ac.jp
Abstract:
We here describe in detail the characterization and molecular evolution of group II introns in the mitochondrial genome of the liverwort Marchantia polymorpha. We find that 18 introns of the 25 group II introns can be assigned by their similarities to six clusters, indicating an intra-genomic propagation of one ancestral intron each into the respective clusters in the liverwort mitochondrial genome. Interestingly, the intra-genomic propagation of some of these introns occurred only after the evolutionary separation of the bryophytes from the other clades of plants. Finally we report that the maturase-like sequences in the liverwort group II introns have further evolved by horizontal and independent transposition and substitution by analogous sequences from other fungal introns.
Related Concept Videos
Animal Mitochondrial Genetics
Export of Mitochondrial and Chloroplast Genes
Exon Recombination
Exon shuffling follows “splice frame rules.” Each exon has three reading...
Gene Evolution - Fast or Slow?
In contrast, regions which code...
Gene Evolution - Fast or Slow?
In contrast, regions which code...
Evolutionary Relationships through Genome Comparisons

