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Membrane trafficking during plant cytokinesis
Sebastian Y Bednarek1, Tanya G Falbel
1Department of Biochemistry, University of Wisconsin-Madison, 433 Babcock Dr, Madison WI 53706, USA. bednarek@biochem.wisc.edu
Traffic (Copenhagen, Denmark)
|August 23, 2002
Summary
Plant cell division relies on the secretory pathway to build the cell plate during cytokinesis. This review explores molecular mechanisms of vesicle transport and cytoskeletal roles in plant cell expansion and division.
Area of Science:
- Plant Biology
- Cell Biology
- Molecular Biology
Background:
- Plant morphogenesis is controlled by cell division and expansion.
- Cytokinesis, the final stage of cell division, involves forming the cell plate.
- The secretory pathway is crucial for cell-plate formation and cell expansion.
Purpose of the Study:
- To review recent genetic and biochemical research on molecular events in plant cytokinesis and cell expansion.
- To highlight the polarization of exocytic pathways during cytokinesis.
- To emphasize the roles of vesicle transport and the cytoskeleton in cell-plate membrane dynamics.
Main Methods:
- Review of genetic research.
- Review of biochemical research.
- Analysis of molecular mechanisms.
Main Results:
- Evidence suggests polarized exocytic pathways direct vesicle transport to the division plane during cytokinesis.
- Secretory vesicle transport is essential for cell-plate membrane trafficking.
- Cytoskeletal machinery plays a key role in cell-plate membrane fusion.
Conclusions:
- The secretory pathway is highly active and polarized during plant cell division and expansion.
- Molecular understanding of cytokinesis and cell expansion is advancing through genetic and biochemical studies.
- Vesicle transport and cytoskeletal elements are integral to cell-plate formation and plant cell growth.