Plant cell walls are primarily made of cellulose, which is the most abundant macromolecule on Earth. Cellulose fibers are long, linear polymers of hundreds of glucose molecules. These fibers ...

A plant cell wall is arranged in layers and contains cellulose microfibrils, hemicellulose, pectin, lignin, and soluble protein. These components are organized into three major layers: the primary ...

Since the emergence of land plants ... made of several layers of polysaccharides, wax, and cutin to protect cells against UV light and desiccation, and (iii) the addition of aromatic compounds ...