Two General Branching Patterns of Xyloglucan, XXXG and XXGG

Abstract

Recent advances in chemical and physical techniques have shed considerable light on the molecular architecture of the primary cell walls of higher plants. According to current models, the primary cell wall is composed of at least two independent polysaccharide networks. The cellulose-xyloglucan network is considered to be an important load-bearing structure of the primary cell wall. Gaps in the cellulose-xyloglucan network are filled by a network of pectic polysaccharides that may control the porosity of the cell wall.