ArticleGenome biology and evolution2018
Robustness of Transposable Element Regulation but No Genomic Shock Observed in Interspecific Arabidopsis Hybrids.
Article in Genome biology and evolution, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.
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21 citing papers in PubMed, 40 citations in OpenAlex.
- The molecular evolutionary basis of species formation revisited.Trends in genetics : TIG · 2025Review
- Hybridization and gene expression: Beyond differentially expressed genes.Molecular ecology · 2025Review
- Centromere-size reduction and chromatin state dynamics following intergenomic hybridization in cotton.PLoS genetics · 2025Article
- The genome and population genomics of allopolyploid Coffea arabica reveal the diversification history of modern coffee cultivars.Nature genetics · 2024Article
- Heritable changes of epialleles near genes in maize can be triggered in the absence of CHH methylation.Plant physiology · 2024Article
- The Genomic Shock Hypothesis: Genetic and Epigenetic Alterations of Transposable Elements after Interspecific Hybridization in Plants.Epigenomes · 2023Review
- Expression pattern of resynthesized allotetraploid Capsella is determined by hybridization, not whole-genome duplication.The New phytologist · 2023Article
- Nonadditive and allele-specific expression of ghrelin in hybrid tilapia.Frontiers in endocrinology · 2023Article
- High Stability of the Epigenome in Drosophila Interspecific Hybrids.Genome biology and evolution · 2022Article
- Reactivation of transposable elements following hybridization in fission yeast.Genome research · 2022Article
- Absence of major epigenetic and transcriptomic changes accompanying an interspecific cross between peach and almond.Horticulture research · 2022Article
- Gradual evolution of allopolyploidy in Arabidopsis suecica.Nature ecology & evolution · 2021Article
- Chromosome-scale assembly and evolution of the tetraploid Salvia splendens (Lamiaceae) genome.Horticulture research · 2021Article
- The challenges of predicting transposable element activity in hybrids.Current genetics · 2021Review
- Transposable Element Mobilization in Interspecific Yeast Hybrids.Genome biology and evolution · 2021Article
- Testing the Genomic Shock Hypothesis Using Transposable Element Expression in Yeast Hybrids.Frontiers in fungal biology · 2021Article
- The effect of hybridization on transposable element accumulation in an undomesticated fungal species.eLife · 2020Article
- Genomics of Evolutionary Novelty in Hybrids and Polyploids.Frontiers in genetics · 2020Review
- Reprogramming of Retrotransposon Activity during Speciation of the Genus Citrus.Genome biology and evolution · 2019Article
- Towards the new normal: Transcriptomic convergence and genomic legacy of the two subgenomes of an allopolyploid weed (Capsella bursa-pastoris).PLoS genetics · 2019Article
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Authors and funding
6 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The merging of two divergent genomes in a hybrid is believed to trigger a "genomic shock", disrupting gene regulation and transposable element (TE) silencing. Here, we tested this expectation by comparing the pattern of expression of transposable elements in their native and hybrid genomic context. For this, we sequenced the transcriptome of the Arabidopsis thaliana genotype Col-0, the A. lyrata genotype MN47 and their F1 hybrid. Contrary to expectations, we observe that the level of TE expression in the hybrid is strongly correlated to levels in the parental species. We detect that at most 1.1% of expressed transposable elements belonging to two specific subfamilies change their expression level upon hybridization. Most of these changes, however, are of small magnitude. We observe that the few hybrid-specific modifications in TE expression are more likely to occur when TE insertions are close to genes. In addition, changes in epigenetic histone marks H3K9me2 and H3K27me3 following hybridization do not coincide with TEs with changed expression. Finally, we further examined TE expression in parents and hybrids exposed to severe dehydration stress. Despite the major reorganization of gene and TE expression by stress, we observe that hybridization does not lead to increased disorganization of TE expression in the hybrid. Although our study did not examine TE transposition activity in hybrids, the examination of the transcriptome shows that TE expression is globally robust to hybridization. The term "genomic shock" is perhaps not appropriate to describe transcriptional modification in a viable hybrid merging divergent genomes.
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