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Updated: May 27, 2026
05:11
In Vivo Visualization of Calcium Transients during Fertilization and Early Development in C. elegans
Published on: July 12, 2024
The eggshell in the C. elegans oocyte-to-embryo transition.
Wendy L Johnston1, James W Dennis
1Samuel Lunenfeld Research Institute, Mount Sinai Hospital, Toronto, Ontario, Canada, M5G 1X5. johnston@lunenfeld.ca
Genesis (New York, N.Y. : 2000)
|November 16, 2011
Summary
The C. elegans eggshell, far from passive, is crucial for early embryonic development. Its layers guide key events like fertilization, chromosome segregation, and cell polarization.
Area of Science:
- Developmental Biology
- Cell Biology
- Genetics
Background:
- Embryonic development in egg-laying animals relies on the eggshell and extracellular matrix.
- The eggshell is an active participant in early developmental events, not just structural support.
Purpose of the Study:
- To review the current understanding of eggshell structure, biosynthesis, and function in C. elegans zygotic development.
- To highlight the eggshell's role in critical early developmental processes.
Main Methods:
- Review of existing literature on Caenorhabditis elegans eggshell development and function.
- Analysis of sequential eggshell layer production and their compositional differences.
Main Results:
- Eggshell layers are produced sequentially after sperm contact, with outer layers influencing inner layer formation.
- Specific developmental events dependent on the eggshell include polyspermy blocking, meiotic segregation, osmotic balance, and cell polarization.
- The C. elegans eggshell provides essential molecular cues for extracellular matrix interactions.
Conclusions:
- The C. elegans eggshell is a dynamic structure critical for multiple early developmental events.
- This model organism offers a tractable system for investigating extracellular matrix roles in cell polarity and development.
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