title: Plant cytokinesis-No ring, no constriction but centrifugal construction of the partitioning membrane.
abstract: Plants have evolved a unique way of partitioning the cytoplasm of dividing cells: Instead of forming a contractile ring that constricts the plasma membrane, plant cells target membrane vesicles to the plane of division where the vesicles fuse with one another to form the partitioning membrane. Plant cytokinesis starts in the centre and progresses towards the periphery, culminating in the fusion of the partitioning membrane with the parental plasma membrane. This membrane dynamics is orchestrated by a specific cytoskeletal array named phragmoplast that originates from interzone spindle remnants. Here we review the properties of the process as well as molecules that play specific roles in that process.
authors.affiliation: Centre for Plant Molecular Biology (ZMBP), Developmental Genetics, University of Tübingen, Auf der Morgenstelle 32, 72076 Tübingen, Germany. Electronic address: sabine.mueller@zmbp.uni-tuebingen.de.
authors.forename: Sabine
authors.initials: S
authors.lastname: Müller
authors.affiliation: Centre for Plant Molecular Biology (ZMBP), Developmental Genetics, University of Tübingen, Auf der Morgenstelle 32, 72076 Tübingen, Germany. Electronic address: gerd.juergens@zmbp.uni-tuebingen.de.
authors.forename: Gerd
authors.initials: G
authors.lastname: Jürgens
mesh_terms: D008841:Actin Cytoskeleton / Q000378:metabolism; D002462:Cell Membrane / Q000378:metabolism*; D048749:Cytokinesis; D008870:Microtubules / Q000378:metabolism; D008954:Models, Biological; D059828:Plant Cells / Q000378:metabolism*
keywords: Cell plate; Kinesin; Membrane fusion; Phragmoplast; Preprophase band; SNARE