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Fission is the division of a single entity into two or more parts, which regenerate into separate entities that resemble the original. Organisms in the Archaea and Bacteria domains reproduce using binary fission, in which a parent cell splits into two parts that can each grow to the size of the original parent cell. This asexual method of reproduction produces cells that are all genetically identical.
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Spatiotemporal Analysis of Cytokinetic Events in Fission Yeast
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Fission yeast septation.

Juan C G Cortés1, Mariona Ramos1, Masako Osumi2

  • 1Instituto de Biología Funcional y Genómica, Consejo Superior de Investigaciones Científicas (CSIC)/Universidad de Salamanca , Salamanca, Spain.

Communicative & Integrative Biology
|August 31, 2016
PubMed
Summary

Fungal cell division requires a septum, a cell wall structure, to coordinate with actomyosin ring constriction and plasma membrane ingression for successful cytokinesis.

Keywords:
cell wallcleavage furrowcontractile actomyosin ringcytokinesisglucanseptum

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Area of Science:

  • Cell Biology
  • Mycology
  • Biochemistry

Background:

  • Cytokinesis in animal cells involves actomyosin ring contraction and cleavage furrow ingression.
  • Fungal cells possess a cell wall, functionally analogous to the extracellular matrix.
  • Fungal cytokinesis necessitates septum formation, coordinated with actomyosin ring dynamics.

Purpose of the Study:

  • To review septum structure and composition in Schizosaccharomyces pombe.
  • To discuss recent findings on septum biosynthesis and actomyosin ring constriction.
  • To highlight the roles of the septum and actomyosin ring in cleavage furrow progression.

Main Methods:

  • Literature review of studies on Schizosaccharomyces pombe.
  • Analysis of research on cell wall formation during fungal cytokinesis.
  • Synthesis of data on the interplay between actomyosin dynamics and septum development.

Main Results:

  • The septum in Schizosaccharomyces pombe is a complex cell wall structure.
  • Septum biosynthesis is tightly linked to the constriction of the actomyosin ring.
  • Proper coordination ensures the steady progression of the cleavage furrow.

Conclusions:

  • The septum is crucial for fungal cytokinesis, working in concert with the actomyosin ring.
  • Understanding these processes is key to comprehending cell division in fungi.
  • Further research can elucidate the precise molecular mechanisms governing this coordination.