AI Article Synopsis
- Plant cell walls have specific regions and structures that are important for their growth and development, known as 'cell-wall microdomains.'
- These microdomains play a role in how the wall's properties change, like becoming looser or stiffer, depending on the type of cells involved.
- The review emphasizes two main groups of molecules that help remodel these walls: a type of pectin called homogalacturonan and two classes of enzymes (class III peroxidases and laccases), along with new molecular scaffolds that support specific enzyme positioning.
Article Abstract
Plant cell walls display cellular and subcellular specificities. At the subcellular level, wall regional territories with specific compositions are necessary for macroscopic developmental processes. These regional specificities were named differently throughout the years, and are unified here under the term 'cell-wall microdomains' that define the local composition and organization of wall polymers underlying territories of wall loosening and/or softening or stiffening. We review the occurrence and developmental role of wall microdomains in different cell types. We primarily focus on the contribution of two categories of wall-remodeling molecular actors: fine-tuning of homogalacturonan (HG; pectin) demethylesterification patterns and two classes of oxidoreductases [class III peroxidases (CIII PRXs) and laccases (LACs)], but we also highlight two different molecular scaffolds recently identified for positioning specific CIII PRXs.
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| http://dx.doi.org/10.1016/j.tplants.2022.05.010 | DOI Listing |
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