A Distinct Mitochondrial Genome with DUI-Like Inheritance in the Ocean Quahog Arctica islandica

@article{Dgletagne2015ADM,
  title={A Distinct Mitochondrial Genome with DUI-Like Inheritance in the Ocean Quahog Arctica islandica},
  author={Cyril D{\'e}gletagne and Doris Abele and Christoph Held},
  journal={Molecular Biology and Evolution},
  year={2015},
  volume={33},
  pages={375 - 383}
}
Mitochondrial DNA (mtDNA) is strictly maternally inherited in metazoans. The major exception to this rule has been found in many bivalve species which allow the presence of different sex-linked mtDNA molecules. This mechanism, named doubly uniparental inheritance (DUI), is characterized by the presence of two mtDNAs: The female mtDNA is found in somatic tissue and female gonads, whereas the male mtDNA is usually found in male gonads and sperm. In this study we highlight the existence of two… 

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References

SHOWING 1-10 OF 45 REFERENCES

The Mitochondrial Genome of Arctica islandica; Phylogeny and Variation

This analysis lays the foundation for further studies on A. islandica population structures, age research with this organism, and for phylogenetic studies.

SPERM MOTILITY IN MYTILUS EDULIS IN RELATION TO MITOCHONDRIAL DNA POLYMORPHISMS: IMPLICATIONS FOR THE EVOLUTION OF DOUBLY UNIPARENTAL INHERITANCE IN BIVALVES

Observations do not support the hypothesis that DUI originated because it permits the evolution of mitochondrial adaptations specific to sperm performance, otherwise, the evolutionarily older, standard M genome should perform better.

An unusual case of gender-associated mitochondrial DNA heteroplasmy: the mytilid Musculista senhousia (Mollusca Bivalvia)

The inverted variability pattern (the F being more variable than M) was new and it challenges most of the rationales proposed to account for sex-linked mtDNA evolution, suggesting mechanisms evolved to protect mtDNA in females might be under relaxed selection in males.

Strict sex-specific mtDNA segregation in the germ line of the DUI species Venerupis philippinarum (Bivalvia: Veneridae).

It is proposed that the mtDNA transmission is achieved through a three-checkpoint process in V. philippinarum, believing that Checkpoint #3 is a mere variation of the "mitochondrial bottleneck" in species with standard maternal inheritance, established when their PGCs separate during embryo cleavage.

Male and female mitochondrial DNA lineages in the blue mussel (Mytilus edulis) species group.

Maximum parsimony and neighbor-joining phylogenies grouped female and male mtDNAs into two distinct lineages irrespective of specific origin in accordance with the hypothesis that the origin of these lineages predates the divergence of M. edulis and M. trossulus.

Molecular evolution and recombination in gender-associated mitochondrial DNAs of the Manila clam Tapes philippinarum.

The data suggest that recombinants, although occurring in soma, may seldom be transmitted to progeny in T. philippinarum and that selection may act with varying strength on different genes.

Mitochondrial phylogenomics of the Bivalvia (Mollusca): searching for the origin and mitogenomic correlates of doubly uniparental inheritance of mtDNA

The basal nature of the Unionoida within the autolamellibranch bivalve bivalves and the previously hypothesized single origin of DUI suggest that DUI arose in the ancestral autlamelliberation bivalving lineage and was subsequently lost in multiple descendant lineages and the mitochondrial genome characteristics observed in unionoids could more closely resemble the DUI ancestral condition.

Heteroplasmy in a deep-sea protobranch bivalve suggests an ancient origin of doubly uniparental inheritance of mitochondria in Bivalvia

Evidence of mitochondrial heteroplasmy in deep-sea protobranch bivalves is presented and it is suggested that DUI might have evolved much earlier in the evolution of the Bivalvia than previously thought.

The complete maternal and paternal mitochondrial genomes of the Mediterranean mussel Mytilus galloprovincialis: implications for the doubly uniparental inheritance mode of mtDNA.

The maternal (F) and paternal (M) mitochondrial genomes of the mussel Mytilus galloprovincialis have diverged by about 20% in nucleotide sequence but retained identical gene content and gene