Sessile snails, dynamic genomes: gene rearrangements within the mitochondrial genome of a family of caenogastropod molluscs.

BMC Genomics
Timothy A RawlingsTimothy M Collins

Abstract

Widespread sampling of vertebrates, which comprise the majority of published animal mitochondrial genomes, has led to the view that mitochondrial gene rearrangements are relatively rare, and that gene orders are typically stable across major taxonomic groups. In contrast, more limited sampling within the Phylum Mollusca has revealed an unusually high number of gene order arrangements. Here we provide evidence that the lability of the molluscan mitochondrial genome extends to the family level by describing extensive gene order changes that have occurred within the Vermetidae, a family of sessile marine gastropods that radiated from a basal caenogastropod stock during the Cenozoic Era. Major mitochondrial gene rearrangements have occurred within this family at a scale unexpected for such an evolutionarily young group and unprecedented for any caenogastropod examined to date. We determined the complete mitochondrial genomes of four species (Dendropoma maximum, D. gregarium, Eualetes tulipa, and Thylacodes squamigerus) and the partial mitochondrial genomes of two others (Vermetus erectus and Thylaeodus sp.). Each of the six vermetid gastropods assayed possessed a unique gene order. In addition to the typical mitochondrial genome co...Continue Reading

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Citations

Jun 23, 2015·Mitochondrial DNA. Part A. DNA Mapping, Sequencing, and Analysis·Chih-Wei HuangWen-Lung Wu
Dec 4, 2012·Comparative Biochemistry and Physiology. Part D, Genomics & Proteomics·Gustavo Núñez-AcuñaCristian Gallardo-Escárate
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Jan 23, 2021·Molecular Phylogenetics and Evolution·Alison R IrwinSuzanne T Williams
Oct 26, 2018·Mitochondrial DNA. Part B, Resources·Duc Hung NguyenRomain Gastineau
Apr 6, 2021·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Fabrizio GhiselliJeffrey L Boore

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Methods Mentioned

BETA
PCR
deamination

Software Mentioned

Fold
MacVector
tRNAscanSE
Clustal X
ARWEN
MFOLD
MEME
MitoZoa
Canvas

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