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Division Plane Establishment and Cytokinesis.
Pantelis Livanos1, Sabine Müller1
1Department of Developmental Genetics, Center for Plant Molecular Biology, Eberhard-Karls-Universität Tübingen, 72076 Tübingen, Germany; email: panteleimon.livanos@zmbp.uni-tuebingen.de , sabine.mueller@zmbp.uni-tuebingen.de.
Annual Review of Plant Biology
|February 24, 2019
Summary
Plant cell division involves forming a cell plate using the phragmoplast, a cytoskeletal structure. Continuous division site proteins guide this process, ensuring proper cell wall formation and spatial control.
Area of Science:
- Plant cell biology
- Cytokinesis research
- Molecular and cellular biology
Background:
- Plant cells divide cytoplasm via cell plate formation, a process guided by the phragmoplast.
- The division site is marked by proteins that provide spatial cues for cell plate guidance.
Purpose of the Study:
- To explore the mechanisms of cell plate biogenesis and spatial control during plant cytokinesis.
- To highlight recent findings on protein contributions and phragmoplast guidance.
Main Methods:
- Review of recent studies on cell plate formation and membrane fusion.
- Analysis of cytoskeletal dynamics, particularly the phragmoplast and preprophase band.
- Investigation of proteins localizing to the division site.
Main Results:
- Cell plate formation involves rerouting the secretory pathway, guided by the phragmoplast.
- Conserved eukaryotic proteins contribute to cell plate biogenesis stages.
- Continuous division site proteins offer lasting spatial references for phragmoplast guidance.
Conclusions:
- Cell plate formation is coupled with phragmoplast expansion.
- Spatial control of cytokinesis involves preprophase band function and division site setup.
- Outstanding questions remain in plant cell cytokinesis and spatial regulation.
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