Cell-wall polysaccharides overall polysaccharide

Overall Polysaccharide Composition of Potato Cell Walls... 

All of these techniques have greatly advanced the elucidation of the primary structures of extracted, purified polysaccharides, and the major features of wall structure in higher plants are now recognized. Nonetheless, the overall complexity of these structures, and the technical problems associated with their study, suggest that a complete picture of the cell wall will not be available in the near future. 

Although it appears probable that there is no overall loss of wall polymers, except, perhaps, in the period just preceding full fruit-maturity, and that wall growth is continuous during cell expansion, there is almost certainly a turnover of wall polysaccharides, and the making and breaking of bonds to facilitate wall expansion during the maturation of fruits. The subject of the possible mechanism by which this wall expansion occurs is discussed in the Section that follows. 

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