ArticleAnnals of botany2021
The nature of intraspecific and interspecific genome size variation in taxonomically complex eyebrights.
Article in Annals of botany, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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17 citing papers in PubMed, 42 citations in OpenAlex.
- Progress and prospects of parasitic plant biodiversity genomics.Plant & cell physiology · 2026Review
- Comparative Analysis of Chromosome Repeat DNA Patterns in FourInternational journal of molecular sciences · 2025Article
- Diverging repeatomes in holoparasitic Hydnoraceae uncover a playground of genome evolution.The New phytologist · 2025Article
- Taxonomy, Phylogeny, Genomes, and Repeatomes in the SubgeneraInternational journal of molecular sciences · 2025Review
- Variation in nuclear genome size in a freshwater snail model system featuring a recent whole-genome duplication.Royal Society open science · 2025Article
- New estimates and synthesis of chromosome numbers, ploidy levels and genome size variation in Allium sect. Codonoprasum: advancing our understanding of the unresolved diversification and evolution of this section.Botanical studies · 2024Article
- Genome Studies inInternational journal of molecular sciences · 2024Article
- A draft reference genome assembly of California Pipevine, Aristolochia californica Torr.The Journal of heredity · 2024Article
- The genome sequence of the confused eyebright,Wellcome open research · 2024Article
- LocoGSE, a sequence-based genome size estimator for plants.Frontiers in plant science · 2024Article
- Genome Studies in Four Species ofPlants (Basel, Switzerland) · 2023Article
- Is there hybridization between diploid and tetraploid Euphrasia in a secondary contact zone?American journal of botany · 2023Article
- Novel Insights into the Nature of Intraspecific Genome Size Diversity inPlants (Basel, Switzerland) · 2022Article
- Integration of Repeatomic and Cytogenetic Data on Satellite DNA for the Genome Analysis in the GenusPlants (Basel, Switzerland) · 2022Article
- Article
- Measuring the Invisible: The Sequences Causal of Genome Size Differences in Eyebrights (Frontiers in plant science · 2022Article
- Pervasive Phylogenomic Incongruence Underlies Evolutionary Relationships in Eyebrights (Frontiers in plant science · 2022Article
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Authors and funding
7 authors at 5 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
aimsGenome size varies considerably across the diversity of plant life. Although genome size is, by definition, affected by genetic presence/absence variants, which are ubiquitous in population sequencing studies, genome size is often treated as an intrinsic property of a species. Here, we studied intra- and interspecific genome size variation in taxonomically complex British eyebrights (Euphrasia, Orobanchaceae). Our aim is to document genome size diversity and investigate underlying evolutionary processes shaping variation between individuals, populations and species.
methodsWe generated genome size data for 192 individuals of diploid and tetraploid Euphrasia and analysed genome size variation in relation to ploidy, taxonomy, population affiliation and geography. We further compared the genomic repeat content of 30 samples. KEY
resultsWe found considerable intraspecific genome size variation, and observed isolation-by-distance for genome size in outcrossing diploids. Tetraploid Euphrasia showed contrasting patterns, with genome size increasing with latitude in outcrossing Euphrasia arctica, but with little genome size variation in the highly selfing Euphrasia micrantha. Interspecific differences in genome size and the genomic proportions of repeat sequences were small.
conclusionsWe show the utility of treating genome size as the outcome of polygenic variation. Like other types of genetic variation, such as single nucleotide polymorphisms, genome size variation may be affected by ongoing hybridization and the extent of population subdivision. In addition to selection on associated traits, genome size is predicted to be affected indirectly by selection due to pleiotropy of the underlying presence/absence variants.
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