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Dev Cell. 2014 Jun 9;29(5):607-620. doi: 10.1016/j.devcel.2014.04.029. Epub 2014 May 29.

Plant cytokinesis is orchestrated by the sequential action of the TRAPPII and exocyst tethering complexes.

Author information

1
Botany, Technische Universität München, 85354 Freising, Germany.
2
Institute of Experimental Botany, Academy of Sciences of the Czech Republic, 165 02 Prague 6, Czech Republic.
3
Chair for Proteomics and Bioanalytics, Technische Universität München, 85354 Freising, Germany.
4
Department of Experimental Plant Biology, Faculty of Science, Charles University, 128 44 Prague 2, Czech Republic.
5
Department Biologie I, Ludwig-Maximillians Universität, Systematische Botanik und Mykologie, 80638 Munich, Germany; Department Biologie I, Ludwig-Maximillians Universität, 82152 Planegg-Martinsried, Germany.
6
Department Biologie I, Ludwig-Maximillians Universität, 82152 Planegg-Martinsried, Germany.
7
Institute of Experimental Botany, Academy of Sciences of the Czech Republic, 165 02 Prague 6, Czech Republic; Department of Experimental Plant Biology, Faculty of Science, Charles University, 128 44 Prague 2, Czech Republic.
8
Max-Planck-Institut für Molekulare Pflanzenphysiologie, 14476 Potsdam, Germany; ARC Centre of Excellence in Plant Cell Walls, School of Botany, University of Melbourne, Parkville, VIC 3010, Australia.
9
Botany, Technische Universität München, 85354 Freising, Germany. Electronic address: farhah@wzw.tum.de.

Abstract

Plant cytokinesis is initiated in a transient membrane compartment, the cell plate, and completed by a process of maturation during which the cell plate becomes a cross wall. How the transition from juvenile to adult stages occurs is poorly understood. In this study, we monitor the Arabidopsis transport protein particle II (TRAPPII) and exocyst tethering complexes throughout cytokinesis. We show that their appearance is predominantly sequential, with brief overlap at the onset and end of cytokinesis. The TRAPPII complex is required for cell plate biogenesis, and the exocyst is required for cell plate maturation. The TRAPPII complex sorts plasma membrane proteins, including exocyst subunits, at the cell plate throughout cytokinesis. We show that the two tethering complexes physically interact and propose that their coordinated action may orchestrate not only plant but also animal cytokinesis.

PMID:
24882377
DOI:
10.1016/j.devcel.2014.04.029
[Indexed for MEDLINE]
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