Rampant intraspecific variation of plastid genomes in Gentiana section Chondrophyllae

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(9)

Published: Sept. 1, 2024

Exploring the level of intraspecific diversity in taxa experienced radiation is helpful to understanding speciation and biodiversity assembly.

Language: Английский

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The Taihangia mitogenome provides new insights into its adaptation and organelle genome evolution in Rosaceae

Planta, Journal Year: 2025, Volume and Issue: 261(3)

Published: Feb. 12, 2025

Language: Английский

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Substantial structural variation and repetitive DNA content contribute to intraspecific plastid genome evolution

BMC Genomics, Journal Year: 2025, Volume and Issue: 26(1)

Published: April 4, 2025

Plastids have highly conserved genomes in most land plants. However, several families, plastid exhibit high rates of nucleotide substitution and structural rearrangements among species. This elevated rate evolution has been posited to lead increased plastid-nuclear incompatibilities (PNI), potentially acting as a driver speciation. the extent which variation exists within species is unknown. study investigates whether variation, observed at interspecific level Campanulaceae, also occurs Campanula americana, with strong intraspecific PNI. We assembled multiple from three lineages C. americana that varying levels PNI when crossed. then investigated repetitive DNA content these compared other family. found significant genome size (188,309-201,788 bp). was due part gene duplications inverted repeat region. Lineages varied their content, Appalachian lineage displaying highest proportion tandem repeats (~ 10%) Eastern Western 6%). In addition, genes involved transcription protein transport showed sequence divergence between lineages, correlation content. one Campanulaceae. These findings challenge conventional view conservation suggest differences key may play role highlights need for further research into genetic mechanisms underlying PNI, process early stages

Language: Английский

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Comparative and evolutionary analysis of chloroplast genomes from five rare Styrax species

BMC Genomics, Journal Year: 2025, Volume and Issue: 26(1)

Published: May 7, 2025

Abstract Background Styrax , a vital raw material for shipbuilding, construction, perfumes, and drugs, represents the largest most diverse genus in Styracaceae. However, there is relative scarcity of research on particularly evolution genetics. Therefore, this study conducted comparative evolutionary analyses chloroplast genomes five rare species ( S. argentifolius buchananii chrysocarpus finlaysonianus rhytidocarpus ). Results The results indicated that, despite high levels conservation genome structure among these species, specific mutation hotspot regions exist, involving expansion contraction IR region. Additionally, evidence positive selection was detected eight genes atpB ccsA ndhD petA rbcL rpoC1 ycf1 ycf2 ), which may be associated with adaptive response to environmental changes. Phylogenetic analysis revealed conflicts between trees constructed based coding sequences complete several were similar previous phylogenetic studies. Conclusion This underscores importance increasing sample sizes enhance accuracy provides new perspective understanding species. These findings are not only important sustainable use but also provide valuable insights plant ecology within genus.

Language: Английский

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Plastome evolution and phylogenomic insights into the evolution of the African submerged endemic genus Lagarosiphon (Hydrocharitaceae)

Aquatic Botany, Journal Year: 2025, Volume and Issue: unknown, P. 103901 - 103901

Published: May 1, 2025

Language: Английский

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