ArticleJournal of plant research2017
Nuclear migration during karyogamy in rice zygotes is mediated by continuous convergence of actin meshwork toward the egg nucleus.
Article in Journal of plant research, 2017. 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, 21 citations in OpenAlex.
- Autophagy modulates Arabidopsis male gametophyte fertility and controls actin organization.Nature communications · 2024Article
- Nuclear Fusion in Yeast and Plant Reproduction.Plants (Basel, Switzerland) · 2023Article
- Dynamics of mitochondrial distribution during development and asymmetric division of rice zygotes.Plant reproduction · 2022Article
- In Vitro Fertilization System Using Wheat Gametes by Electric Fusion.Methods in molecular biology (Clifton, N.J.) · 2022Article
- Development and regeneration of wheat-rice hybrid zygotes produced by in vitro fertilization system.The New phytologist · 2021Article
- Formins control dynamics of F-actin in the central cell ofPlant signaling & behavior · 2021Article
- Plant egg cell fate determination depends on its exact position in female gametophyte.Proceedings of the National Academy of Sciences of the United States of America · 2021Article
- An F-Actin Mega-Cable Is Associated With the Migration of the Sperm Nucleus During the Fertilization of the Polarity-Inverted Central Cell ofFrontiers in plant science · 2021Article
- ARP2/3-independent WAVE/SCAR pathway and class XI myosin control sperm nuclear migration in flowering plants.Proceedings of the National Academy of Sciences of the United States of America · 2020Article
- Article
- Plasmogamic Paternal Contributions to Early Zygotic Development in Flowering Plants.Frontiers in plant science · 2020Review
- In Vitro Production of Zygotes by Electrofusion of Rice Gametes.Methods in molecular biology (Clifton, N.J.) · 2020Article
- Gamete Nuclear Migration in Animals and Plants.Frontiers in plant science · 2019Review
- Cell cycle in egg cell and its progression during zygotic development in rice.Plant reproduction · 2018Article
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
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Abstract
Fertilization is comprised of two sequential fusion processes; plasmogamy and karyogamy. Karyogamy completes with migration and fusion of the male and female nuclei in the fused cell. In animals, microtubules organized by the centrosome control female/male pronuclei migration. In contrast, the nuclear migration in fused gametes of angiosperms is controlled by actin filaments, but the mechanism that regulates actin filament-dependent nuclear migration is not clear. In this study, we prepared fused rice (Oryza sativa L.) gametes/zygotes using in vitro fertilization and observed the spatial and temporal movements of actin filaments and sperm nuclei. Our results show that actin filaments in egg cells form a meshwork structure surrounding the nuclei. Quantitative analysis of the actin meshwork dynamics suggests that actin meshwork converges toward the egg nucleus. In egg cells fused with sperm cells, actin filaments appeared to interact with a portion of the sperm nuclear membrane. The velocity of the actin filaments was positively correlated with the velocity of the sperm nucleus during karyogamy. These results suggest that sperm nuclear membrane and actin filaments physically interact with each other during karyogamy, and that the sperm nucleus migrates toward the egg nucleus through the convergence of the actin meshwork. Interestingly, actin filament velocity increased promptly after gamete fusion and was further elevated during nuclear fusion. In addition to the migration of gamete nuclei, convergence of actin meshwork may also be critical during early zygotic developments.
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