期刊
DEVELOPMENTAL CELL
卷 29, 期 5, 页码 607-620出版社
CELL PRESS
DOI: 10.1016/j.devcel.2014.04.029
关键词
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资金
- NSF grant [DBI-0421683, RCN 009281]
- DFG [AS110/4-6, AS110/5-1]
- Czech Science Foundation grants [GPP501/11/P853, GACR P305/11/1629]
- Charles University grant (Prague project) [658112]
- Max Planck Gesellschaft
- DFG grants
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.
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