Abstract
A well-coordinated process is required to construct a complicated structure like the cell wall, which consists of several elements that must be joined appropriately from various sources inside the cell. In order to successfully moderate dynamic responses to developmental and environmental signals, further complexity is necessary. The plasma membrane is continually and actively transporting sugars, enzymes, and other cell wall elements throughout diffused development. Actin filaments and microtubules make up the cytoskeletal pathways used to transport cell wall elements in vesicles during cell division. In addition to these elements, other proteins, vesicles and lipids are transported from and to the cell plate while cytokinesis occurs. Adding additional cell wall material or building a new cell wall requires a rearrangement of the cytoskeleton, which we examine in this review first. We next look at the commonalities between these two processes. Our next topic is the transport of cell wall-building polysaccharides and enzymes via motor proteins and other interactions with the cytoskeleton. Final thoughts on cytokinesis-generated cell walls include a look at some of their unique properties.
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