ArticleG3 (Bethesda, Md.)2015
Multiple Conserved Heteroplasmic Sites in tRNA Genes in the Mitochondrial Genomes of Terrestrial Isopods (Oniscidea).
Article in G3 (Bethesda, Md.), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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Who cites it
12 citing papers in PubMed.
- The complete mitogenome ofMitochondrial DNA. Part B, Resources · 2026Article
- Pervasive heteroplasmy in an invasive ambrosia beetle (Scolytinae) in southern California.Heredity · 2024Article
- Long-read sequencing reveals atypical mitochondrial genome structure in a New Zealand marine isopod.Royal Society open science · 2022Article
- Disrupted architecture and fast evolution of the mitochondrial genome of Argeia pugettensis (Isopoda): implications for speciation and fitness.BMC genomics · 2020Article
- Article
- The first complete mitochondrial genome of a parasitic isopod supports Epicaridea Latreille, 1825 as a suborder and reveals the less conservative genome of isopods.Systematic parasitology · 2018Article
- Article
- Untangling Heteroplasmy, Structure, and Evolution of an Atypical Mitochondrial Genome by PacBio Sequencing.Genetics · 2017Article
- Diversity and evolution of sex determination systems in terrestrial isopods.Scientific reports · 2017Article
- The first complete mitogenome of the South China deep-sea giant isopodEcology and evolution · 2017Article
- Article
- Large gene overlaps and tRNA processing in the compact mitochondrial genome of the crustacean Armadillidium vulgare.RNA biology · 2015Article
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Authors and funding
5 authors.
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Abstract
Mitochondrial genome structure and organization are relatively conserved among metazoans. However, in many isopods, especially the terrestrial isopods (Oniscidea), the mitochondrial genome consists of both ∼14-kb linear monomers and ∼28-kb circular dimers. This unusual organization is associated with an ancient and conserved constitutive heteroplasmic site. This heteroplasmy affects the anticodon of a tRNA gene, allowing this single locus to function as a "dual" tRNA gene for two different amino acids. Here, we further explore the evolution of these unusual mitochondrial genomes by assembling complete mitochondrial sequences for two additional Oniscidean species, Trachelipus rathkei and Cylisticus convexus. Strikingly, we find evidence of two additional heteroplasmic sites that also alter tRNA anticodons, creating additional dual tRNA genes, and that are conserved across both species. These results suggest that the unique linear/circular organization of isopods' mitochondrial genomes may facilitate the evolution of stable mitochondrial heteroplasmies, and, conversely, once such heteroplasmies have evolved, they constrain the multimeric structure of the mitochondrial genome in these species. Finally, we outline some possible future research directions to identify the factors influencing mitochondrial genome evolution in this group.
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