ArticleGenome biology and evolution2017
DNA Remodeling by Strict Partial Endoreplication in Orchids, an Original Process in the Plant Kingdom.
Article in Genome biology and evolution, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.
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Who cites it
11 citing papers in PubMed.
- Nuclear genome profiling of two species ofNAR genomics and bioinformatics · 2026Article
- A chromosome-level genome assembly of Vanilla planifolia uncovers the genomic architecture underlying partial endoreplication.BMC genomics · 2026Article
- Integrating genome-wide traits and multi-loci phylogeny to investigate orchid evolution-A case study on Pleurothallidinae.The Plant journal : for cell and molecular biology · 2025Article
- Persistent Habitat Instability and Patchiness, Sexual Attraction, Founder Events, Drift and Selection: A Recipe for Rapid Diversification of Orchids.Plants (Basel, Switzerland) · 2025Review
- Colchicine-Induced Tetraploidy in Protocorms ofPlants (Basel, Switzerland) · 2024Article
- First Gynogenesis ofPlants (Basel, Switzerland) · 2024Article
- Genome size and endoreplication in two pairs of cytogenetically contrasting species ofAoB PLANTS · 2022Article
- A chromosome-level, haplotype-phased Vanilla planifolia genome highlights the challenge of partial endoreplication for accurate whole-genome assembly.Plant communications · 2022Article
- Integrative Study of Genotypic and Phenotypic Diversity in the Eurasian Orchid GenusFrontiers in plant science · 2021Article
- A phased Vanilla planifolia genome enables genetic improvement of flavour and production.Nature food · 2020Article
- Evolutionary and functional potential of ploidy increase within individual plants: somatic ploidy mapping of the complex labellum of sexually deceptive bee orchids.Annals of botany · 2018Article
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Authors and funding
10 authors.
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Abstract
DNA remodeling during endoreplication appears to be a strong developmental characteristic in orchids. In this study, we analyzed DNA content and nuclei in 41 species of orchids to further map the genome evolution in this plant family. We demonstrate that the DNA remodeling observed in 36 out of 41 orchids studied corresponds to strict partial endoreplication. Such process is developmentally regulated in each wild species studied. Cytometry data analyses allowed us to propose a model where nuclear states 2C, 4E, 8E, etc. form a series comprising a fixed proportion, the euploid genome 2C, plus 2-32 additional copies of a complementary part of the genome. The fixed proportion ranged from 89% of the genome in Vanilla mexicana down to 19% in V. pompona, the lowest value for all 148 orchids reported. Insterspecific hybridization did not suppress this phenomenon. Interestingly, this process was not observed in mass-produced epiphytes. Nucleolar volumes grow with the number of endocopies present, coherent with high transcription activity in endoreplicated nuclei. Our analyses suggest species-specific chromatin rearrangement. Towards understanding endoreplication, V. planifolia constitutes a tractable system for isolating the genomic sequences that confer an advantage via endoreplication from those that apparently suffice at diploid level.
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