Journal
DEVELOPMENTAL CELL
Volume 56, Issue 7, Pages 933-948Publisher
CELL PRESS
DOI: 10.1016/j.devcel.2021.03.004
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Funding
- Canada Research Chairs Program
- NSERC [2020-05959, 2019-04592]
- NSERC CGS-D scholarship
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The composition and synthesis of the cell wall vary among different plant species, cell types, and regions within a cell wall, but are underpinned by common cellular mechanisms.
Organelles of the plant cell cooperate to synthesize and secrete a strong yet flexible polysaccharide-based extracellular matrix: the cell wall. Cell wall composition varies among plant species, across cell types within a plant, within different regions of a single cell wall, and in response to intrinsic or extrinsic signals. This diversity in cell wall makeup is underpinned by common cellular mechanisms for cell wall production. Cellulose synthase complexes function at the plasma membrane and deposit their product into the cell wall. Matrix polysaccharides are synthesized by a multitude of glycosyltransferases in hundreds of mobile Golgi stacks, and an extensive set of vesicle trafficking proteins govern secretion to the cell wall. In this review, we discuss the different subcellular locations at which cell wall synthesis occurs, review the molecular mechanisms that control cell wall biosynthesis, and examine how these are regulated in response to different perturbations to maintain cell wall homeostasis.
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