期刊
CURRENT OPINION IN CELL BIOLOGY
卷 60, 期 -, 页码 9-18出版社
CURRENT BIOLOGY LTD
DOI: 10.1016/j.ceb.2019.03.006
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资金
- German Research Foundation [MU3133/6-1, MU3133/32]
- German Research Foundation (Heisenberg Fellowship)
- Center of Plant Molecular Biology, University of Tubingen
The plant microtubules form unique arrays using acentrosomal microtubule nucleation pathways, yet utilizing evolutionary conserved centrosomal proteins. In cytokinesis, a multi-component cytoskeletal apparatus, the phragmoplast mediates the biosynthesis of the new cell plate by dynamic centrifugal expansion, a process that demands exquisite coordination of microtubule turnover and endomembrane trafficking. At the same time, the phragmoplast is guided to meet with the parental wall at a cortical site that is predefined before mitotic entry and transiently marked by the preprophase band of microtubules. The cortical division zone maintains positional information of the selected division plane for the entire duration of cell division and for the guidance of the phragmoplast during cytokinesis. Its establishment is an essential requirement for normal plant organogenesis, due to the confinement of cells by rigid cell walls.
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