Comparative Analysis of Gender-Associated Complete Mitochondrial Genomes in Marine Mussels (Mytilus spp.)
Correlation of the divergence rate of different protein-coding genes indicates that mtDNA-encoded proteins of the M genome are still under selective constraints, although less highly than genes of the F genome.
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.
The unusual system of doubly uniparental inheritance of mtDNA: isn't one enough?
Comparative Mitochondrial Genomics of Freshwater Mussels (Bivalvia: Unionoida) With Doubly Uniparental Inheritance of mtDNA: Gender-Specific Open Reading Frames and Putative Origins of Replication
It is proposed that unassigned regions are the most promising candidate sequences in which to find regulatory and/or gender-specific sequences that could determine whether a mitochondrial genome will be maternally or paternally transmitted.
Facing environmental predictability with different sources of epigenetic variation
Assessment of sources of epigenetic changes on clonal fish from predictable (lakes) or unpredictable (intermittent streams) environments revealed contrasting contribution of environmentally induced versus stochastic changes according to their origins, suggesting that plasticity and random processes are complementary strategies.
Population structure of two northern hemisphere polychaetes, Neanthes virens and Hediste diversicolor (Nereididae), with different life-history traits
Results show that widely separated H. diversicolor populations are strongly differentiated at the cyt b locus, and that this species has experienced a drastic bottleneck and that a few remaining lineages recolonized its entire range.
Novel protein genes in animal mtDNA: a new sex determination system in freshwater mussels (Bivalvia: Unionoida)?
It is shown that mtDNA intraorganismal heteroplasmy can have deterministic underpinnings and persist for hundreds of millions of years and support the hypothesis that proteins coded by the highly divergent maternally and paternally transmitted mt genomes could be directly involved in sex determination in freshwater mussels.
Characterization of a mitochondrial ORF from the gender-associated mtDNAs of Mytilus spp. (Bivalvia: Mytilidae): identification of the "missing" ATPase 8 gene.
Evidence for a Fourteenth mtDNA-Encoded Protein in the Female-Transmitted mtDNA of Marine Mussels (Bivalvia: Mytilidae)
The results confirm the presence of a novel F genome-specific mt ORF, of significant length (>100aa) and located in the control region, that most likely has functional significance in marine mussels and offer support for the hypothesis that “novel F genomes-specific mitochondrial genes” are involved in key biological functions in bivalve species with DUI.