ArticleThe Plant journal : for cell and molecular biology2021
Reciprocal allopolyploid grasses (Festuca × Lolium) display stable patterns of genome dominance.
Article in The Plant journal : for cell and molecular biology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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14 citing papers in PubMed, 30 citations in OpenAlex.
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- Causes and consequences of cytonuclear incompatibility in hybrids of flowering plants.Journal of experimental botany · 2026Review
- Remodeling of homoeolog expression bias buffers stress response in allotetraploid cotton.BMC plant biology · 2026Article
- Association of hybridization and genome doubling with codon usage landscapes in the subgenomes of bread wheat.Frontiers in plant science · 2026Article
- Rapid reprogramming and stabilization of homoeolog expression bias in hexaploid wheat biparental populations.Genome biology · 2025Article
- Asymmetric genome merging leads to gene expression novelty through nucleo-cytoplasmic disruptions and transcriptomic shock in Chlamydomonas triploids.The New phytologist · 2025Article
- Review
- Genome-wide artificial introgressions of Gossypium barbadense into G. hirsutum reveal superior loci for simultaneous improvement of cotton fiber quality and yield traits.Journal of advanced research · 2023Article
- Genetic architecture of inter-specific and -generic grass hybrids by network analysis on multi-omics data.BMC genomics · 2023Article
- Article
- Subgenome evolutionary dynamics in allotetraploid ferns: insights from the gene expression patterns in the allotetraploid speciesFrontiers in plant science · 2023Article
- High-quality haplotype-resolved genome assembly of cultivated octoploid strawberry.Horticulture research · 2023Article
- Uniparental expression of ribosomal RNA in ×Frontiers in plant science · 2023Article
- Genome Dominance inFrontiers in plant science · 2022Article
Corrections and comments
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Authors and funding
11 authors at 8 institutions in 5 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Allopolyploidization entailing the merger of two distinct genomes in a single hybrid organism, is an important process in plant evolution and a valuable tool in breeding programs. Newly established hybrids often experience massive genomic perturbations, including karyotype reshuffling and gene expression modifications. These phenomena may be asymmetric with respect to the two progenitors, with one of the parental genomes being "dominant." Such "genome dominance" can manifest in several ways, including biased homoeolog gene expression and expression level dominance. Here we employed a k-mer-based approach to study gene expression in reciprocal Festuca pratensis Huds. × Lolium multiflorum Lam. allopolyploid grasses. Our study revealed significantly more genes where expression mimicked that of the Lolium parent compared with the Festuca parent. This genome dominance was heritable to successive generation and its direction was only slightly modified by environmental conditions and plant age. Our results suggest that Lolium genome dominance was at least partially caused by its more efficient trans-acting gene expression regulatory factors. Unraveling the mechanisms responsible for propagation of parent-specific traits in hybrid crops contributes to our understanding of allopolyploid genome evolution and opens a way to targeted breeding strategies.
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