Microtubule networks for plant cell division.

摘要: During cytokinesis the cytoplasm of a cell is divided to form two daughter cells. In animal cells, existing plasma membrane first constricted and then abscised generate individual membranes. Plant cells on other hand divide by forming an interior dividing wall, so-called plate, which constructed localized deposition wall material. Construction starts in centre at locus mitotic spindle continues radially towards membrane. Finally plate fuse Two microtubule-based cytoskeletal networks, phragmoplast pre-prophase band (PPB), jointly control plants. The bipolar microtubule array regulates cortical position that templated ring-shaped PPB. contrast most plants do not use centrosomes as foci growth initiation. Instead, plant networks are striking examples self-organizing systems emerge from physically constrained interactions dispersed microtubules. Here we will discuss how activities including growth, shrinkage, severing, sliding, nucleation bundling interrelate required ordered structures. Evidence mounts adapter proteins sense local geometry microtubules locally modulate activity involved regulation severing. Many mechanisms have roles assemblies well, bestowing broader relevance insights gained