ArticleBMC plant biology2011
Apospory appears to accelerate onset of meiosis and sexual embryo sac formation in sorghum ovules.
Article in BMC plant biology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.
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Who cites it
29 citing papers in PubMed.
- Paradigm shift in apomixis research: Targeting mutants with elements of apomixis in sexual crops.Planta · 2026Review
- Basis of apomixis in flowering plants - state of the art and research perspectives.Plant reproduction · 2026Review
- 3D Imaging, Segmentation, and Cell Annotation of the Ovule During Megaspore Mother Cell Differentiation in Paspalum spp.Methods in molecular biology (Clifton, N.J.) · 2026Article
- Exploring potential strategies for haploid induction based on double fertilization in plants.Plant biotechnology journal · 2025Review
- Widespread application of apomixis in agriculture requires further study of natural apomicts.iScience · 2024Review
- The phenomenon of autonomous endosperm in sexual and apomictic plants.Journal of experimental botany · 2023Review
- Apomixis: oh, what a tangled web we have!Planta · 2023Review
- 3D cellular morphometrics of ovule primordium development inFrontiers in plant science · 2023Article
- ApomicticFrontiers in plant science · 2023Article
- Spotting the Targets of the Apospory ControllerPlants (Basel, Switzerland) · 2022Article
- Variation of Residual Sexuality Rates along Reproductive Development in Apomictic Tetraploids ofPlants (Basel, Switzerland) · 2022Article
- Epigenetic Modifications in Plant Development and Reproduction.Epigenomes · 2021Review
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- Whether Gametophytes are Reduced or Unreduced in Angiosperms Might Be Determined Metabolically.Genes · 2020Article
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- Sexual modulation in a polyploid grass: a reproductive contest between environmentally inducible sexual and genetically dominant apomictic pathways.Scientific reports · 2020Article
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- Heterochronic reproductive developmental processes between diploid and tetraploid cytotypes of Paspalum rufum.Annals of botany · 2019Article
Corrections and comments
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundGenetically unreduced (2n) embryo sacs (ES) form in ovules of gametophytic apomicts, the 2n eggs of which develop into embryos parthenogenetically. In many apomicts, 2n ES form precociously during ovule development. Whether meiosis and sexual ES formation also occur precociously in facultative apomicts (capable of apomictic and sexual reproduction) has not been studied. We determined onset timing of meiosis and sexual ES formation for 569 Sorghum bicolor genotypes, many of which produced 2n ES facultatively.
resultsGenotype differences for onset timing of meiosis and sexual ES formation, relative to ovule development, were highly significant. A major source of variation in timing of sexual germline development was presence or absence of apomictic ES, which formed from nucellar cells (apospory) in some genotypes. Genotypes that produced these aposporous ES underwent meiosis and sexual ES formation precociously. Aposporous ES formation was most prevalent in subsp. verticilliflorum and in breeding lines of subsp. bicolor. It was uncommon in land races.
conclusionsThe present study adds meiosis and sexual ES formation to floral induction, apomictic ES formation, and parthenogenesis as processes observed to occur precociously in apomictic plants. The temporally diverse nature of these events suggests that an epigenetic memory of the plants' apomixis status exists throughout its life cycle, which triggers, during multiple life cycle phases, temporally distinct processes that accelerate reproduction.
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