ArticleBMC evolutionary biology2014
Correlation between sequence divergence and polymorphism reveals similar evolutionary mechanisms acting across multiple timescales in a rapidly evolving plastid genome.
Article in BMC evolutionary biology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.
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33 citing papers in PubMed.
- Causes and consequences of cytonuclear incompatibility in hybrids of flowering plants.Journal of experimental botany · 2026Review
- Patterns of plastid gene evolution: identifying candidate genes for plastid-nuclear incompatibility across the Campanulaceae.Frontiers in plant science · 2026Article
- Plastome evidence repositionsFrontiers in plant science · 2026Article
- Genetic Isolation among Four Lineages of Silene nutans.Plant & cell physiology · 2025Article
- Substantial structural variation and repetitive DNA content contribute to intraspecific plastid genome evolution.BMC genomics · 2025Article
- Comparative and phylogenetic analysis of the complete chloroplast genome sequences of Melanoseris cyanea group.Scientific reports · 2025Article
- Survey ofPhysiology and molecular biology of plants : an international journal of functional plant biology · 2024Article
- Rampant intraspecific variation of plastid genomes inEcology and evolution · 2024Article
- Impacts of Natural Selection on Evolution of Core and Symbiotically Specialized (International journal of molecular sciences · 2023Article
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- What is the potential impact of genetic divergence of plastid ribosomal genes betweenFrontiers in plant science · 2023Article
- Ten Plastomes ofBiology · 2022Article
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- Phylogenomic approaches untangle early divergences and complex diversifications of the olive plant family.BMC biology · 2022Article
- Gene duplication and rate variation in the evolution of plastid ACCase and Clp genes in angiosperms.Molecular phylogenetics and evolution · 2022Article
- Article
- Lineage-Specific Variation in IR Boundary Shift Events, Inversions, and Substitution Rates among CaprifoliaceaeInternational journal of molecular sciences · 2021Article
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- Plastid Genomes of Flowering Plants: Essential Principles.Methods in molecular biology (Clifton, N.J.) · 2021Article
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Abstract
backgroundAlthough the plastid genome is highly conserved across most angiosperms, multiple lineages have increased rates of structural rearrangement and nucleotide substitution. These lineages exhibit an excess of nonsynonymous substitutions (i.e., elevated dN/dS ratios) in similar subsets of plastid genes, suggesting that similar mechanisms may be leading to relaxed and/or positive selection on these genes. However, little is known regarding whether these mechanisms continue to shape sequence diversity at the intraspecific level.
resultsWe examined patterns of interspecific divergence and intraspecific polymorphism in the plastid genome of Campanulastrum americanum, and across plastid genes found a significant correlation between dN/dS and pN/pS (i.e., the within-species equivalent of dN/dS). A number of genes including ycf1, ycf2, clpP, and ribosomal protein genes exhibited high dN/dS ratios. McDonald-Kreitman tests detected little evidence for positive selection acting on these genes, likely due to the presence of substantial intraspecific divergence.
conclusionsThese results suggest that mechanisms leading to increased nucleotide substitution rates in the plastid genome are continuing to act at the intraspecific level. Accelerated plastid genome evolution may increase the likelihood of intraspecific cytonuclear genetic incompatibilities, and thereby contribute to the early stages of the speciation process.
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