ArticleThe New phytologist2014
Emergence of apospory and bypass of meiosis via apomixis after sexual hybridisation and polyploidisation.
Article in The New phytologist, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 51 papers.
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51 citing papers in PubMed, 93 citations in OpenAlex.
- Embryonic Development and Potential Causes of Reproductive Failure inPlants (Basel, Switzerland) · 2026Article
- Ecological opportunity and the onset of polyploid niche expansion waves.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Genomic consequences of residual recombination in a hybrid apomictic hickory complex.Nature communications · 2026Article
- Multiple hybrid zones involving four Cardamine species and their triploid progeny: watching allopolyploid speciation in action?The New phytologist · 2025Article
- An interactive heuristic model to test ecological and evolutionary hypotheses on incipient polyploid species.Scientific reports · 2025Article
- Harnessing apomixis: natural mechanisms and synthetic innovations for advancing crop and forage breeding.Horticulture research · 2025Article
- Hybrid fertility and the rarity of homoploid hybrid speciation.AoB PLANTS · 2025Article
- Transcriptomic and metabolomic analysis clarify the molecular mechanisms underlying the formation of sexual and apomictic Persian walnut (Frontiers in plant science · 2025Article
- Reproductive Performance of the Alpine Plant SpeciesLife (Basel, Switzerland) · 2024Article
- Apomixis and the paradox of sex in plants.Annals of botany · 2024Review
- Phylogenomics of Southern European Taxa in thePlants (Basel, Switzerland) · 2023Article
- Ovule Transcriptome Analysis Discloses Deregulation of Genes and Pathways in Sexual and ApomicticGenes · 2023Article
- Reproduction Modes and Conservation Implications in Three PolyploidPlants (Basel, Switzerland) · 2023Article
- Variability of Reproduction Pathways in the Central-European Populations of Hawthorns with Emphasis on Triploids.Plants (Basel, Switzerland) · 2022Article
- Evolution of Transcriptomes in Early-Generation Hybrids of the ApomicticInternational journal of molecular sciences · 2022Article
- Variation of Residual Sexuality Rates along Reproductive Development in Apomictic Tetraploids ofPlants (Basel, Switzerland) · 2022Article
- Polyploidy Improves Photosynthesis Regulation within theBiology · 2021Article
- Autonomous apomixis inAoB PLANTS · 2021Article
- Breeding system of diploid sexuals within theEcology and evolution · 2020Article
- The relation of meiotic behaviour to hybridity, polyploidy and apomixis in the Ranunculus auricomus complex (Ranunculaceae).BMC plant biology · 2020Article
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Authors and funding
6 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Hybridisation and polyploidy are major forces contributing to plant speciation. Homoploid (2x) and heteroploid (3x) hybrids, however, represent critical stages for evolution due to disturbed meiosis and reduced fertility. Apomixis--asexual reproduction via seeds--can overcome hybrid sterility, but requires several concerted alterations of developmental pathways to result in functional seed formation. Here, we analyse the reproductive behaviours of homo- and heteroploid synthetic hybrids from crosses between sexual diploid and tetraploid Ranunculus auricomus species to test the hypothesis that developmental asynchrony in hybrids triggers the shift to apomictic reproduction. Evaluation of male and female gametophyte development, viability and functionality of gametes shows developmental asynchrony, whereas seed set and germinability indicate reduced fitness in synthetic hybrids compared to sexual parents. We present the first experimental evidence for spontaneous apospory in most hybrids as an alternative pathway to meiosis, and the appearance of functional apomictic seeds in triploids. Bypassing meiosis permits these triploid genotypes to form viable seed and new polyploid progeny. Asynchronous development causes reduced sexual seed set and emergence of apospory in synthetic Ranunculus hybrids. Apomixis is functional in triploids and associated with drastic meiotic abnormalities. Selection acts to stabilise developmental patterns and to tolerate endosperm dosage balance shifts which facilitates successful seed set and establishment of apomictic lineages.
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