Abstract
The biochemistry of cell-wall regeneration in protoplasts obtained from Vinca rosea L. (Catharanthus roseus (L.) G. Don) cells grown in suspension culture by isolating the regenerated wall and the extracellular polysaccharides of protoplasts cultured for various periods, and investigating their composition. Gas-liquid chromatography and tracer studies with D-[U-(14)C]glucose showed that the sugar composition of the extracellular polysaccharides was similar to that of the original cell culture, consisting mainly of polyuronide and 3,6-linked arabinogalactan. the regenerated cell wall was composed of non-cellulosic glucans having 1,3- and 1,4-linkages, while its content in pectic and hemicellulosic components was very low.
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