Plant cells are made from three groups of polysaccharides, namely, cellulose, hemicelluloses and pectins, each with unique physical properties. Cellulose consists of numerous parallel ?1,4-D-glucan chains; hemicelluloses of primary cell walls are xyloglucans and arabinoxylans; and pectins (e.g. homogalacturonan and rhamnogalacturonan-I) are polymers of galacturonic acid. Specifically, cellulose microfibrils make lateral contacts with each other, forming bundles and a coherent network. Xyloglucans bind to cellulose microfibrils, potentially blocking the stronger cellulose?cellulose interactions. Pectins form a hydrogel that embeds cellulose and xyloglucan (see Cosgrove, DJ, 2023 PMID: 38102449). Pectins also have weak interactions with both cellulose and xyloglucan.