ArticleProceedings of the National Academy of Sciences of the United States of America2009
Plants with double genomes might have had a better chance to survive the Cretaceous-Tertiary extinction event.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 306 papers.
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306 citing papers in PubMed.
- Non-coding DNA dynamics and its roles as a physical barrier in genome safeguarding across early development and evolution.Heredity · 2026Review
- Environmental and Evolutionary Correlates of Extinction Risk in a Global Biodiversity Hotspot.Ecology and evolution · 2026Article
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- The Tianshan Mountains as a biogeographic barrier driving North-South divergence and local adaptation inPlant diversity · 2026Article
- A milestone in resolving the polyploid paradox.Plant diversity · 2026Article
- Distinct evolutionary trajectories of gene duplication modes in 40 diploid cotton genomes.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2026Article
- Genome evolution through polyploidy: Enhancing plant stress resilience in agriculture.Proceedings of the National Academy of Sciences of the United States of America · 2026Review
- Traversing the effects of ploidy changes in different Eragrostis curvula genotypes through high-throughput RNA sequencing.The plant genome · 2026Article
- Legume genome structures and histories inferred from Cercis canadensis and Chamaecrista fasciculata genomes.The Plant journal : for cell and molecular biology · 2026Article
- Polyploidy and plant resilience to environmental stresses: Molecular mechanisms and future applications.Plant communications · 2026Review
- Using reciprocally retained gene families to detect whole-genome multiplications in plants.Genome biology · 2026Article
- Pulsed evolution shaped extant angiosperm pollen disparity.Nature communications · 2026Article
- Stage-specific transcriptomic and DNA methylation responses to triploidy in European sea bass embryos and larvae.BMC genomics · 2025Article
- Genome Architecture and Speciation in Plants and Animals.Molecular ecology · 2025Review
- Article
- The two sub-genomes of the allotetraploid frog Xenopus laevis are evolving under similar selective pressure in extant populations.BMC genomics · 2025Article
- Genome-Wide Analysis of the Common Fig (Ficus carica L.) R2R3-MYB Genes Reveals Their Structure, Evolution, and Roles in Fruit Color Variation.Biochemical genetics · 2025Article
- Whole genome duplication drives transcriptome reprogramming in response to drought in alfalfa.Plant cell reports · 2025Article
- A near-gapless genome assembly of Pseudocydonia sinensis uncovers unique phenylpropanoid pathways.Plant biotechnology journal · 2025Article
246 more citing papers are in PubMed but not listed here.
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3 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Most flowering plants have been shown to be ancient polyploids that have undergone one or more whole genome duplications early in their evolution. Furthermore, many different plant lineages seem to have experienced an additional, more recent genome duplication. Starting from paralogous genes lying in duplicated segments or identified in large expressed sequence tag collections, we dated these youngest duplication events through penalized likelihood phylogenetic tree inference. We show that a majority of these independent genome duplications are clustered in time and seem to coincide with the Cretaceous-Tertiary (KT) boundary. The KT extinction event is the most recent mass extinction caused by one or more catastrophic events such as a massive asteroid impact and/or increased volcanic activity. These events are believed to have generated global wildfires and dust clouds that cut off sunlight during long periods of time resulting in the extinction of approximately 60% of plant species, as well as a majority of animals, including dinosaurs. Recent studies suggest that polyploid species can have a higher adaptability and increased tolerance to different environmental conditions. We propose that polyploidization may have contributed to the survival and propagation of several plant lineages during or following the KT extinction event. Due to advantages such as altered gene expression leading to hybrid vigor and an increased set of genes and alleles available for selection, polyploid plants might have been better able to adapt to the drastically changed environment 65 million years ago.
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