-
Views
-
Cite
Cite
Ken Sasaki, Changes in Neutral Sugar Compositions of Cell Wall Polysaccharides during Redifferentiation of Cultured Carrot Cells and during Maturation of Soybean Seeds, Plant and Cell Physiology, Volume 24, Issue 5, July 1983, Pages 811–821, https://doi.org/10.1093/oxfordjournals.pcp.a076581
Close - Share Icon Share
Abstract
Changes in the neutral sugar compositions of cell walls were studied during regeneration of shoots and roots from cultured carrot cells and during maturation of soybean seeds. There were more arabinan and arabinose-rich acidic polysaccharides than galactose-rich polysaccharides in the pectic fractions of the cell walls from cultured carrot cells and more galactan, arabinogalactan or both than the arabinose-rich polysaccharides in the same fractions from their mother tissue, i.e. root phloem tissue.
The arabinose content of the cell walls decreased and the galactose content increased during root and shoot formation until galactose exceeded arabinose in the cell walls of fully developed shoots and roots from cultured cells. The cell wall arabinose content also was higher than that of galactose in cotyledons and embryonic axes of immature soybean seeds, and change in the neutral sugar composition of the cell wall during seed maturation was similar to that during the redifTerentiation of cultured carrot cells. During the very late stage of maturation, galactose in the cell walls exceeded the content of arabinose.
Results suggest that the redifferentiation of roots and shoots from cultured cells goes through a process of cell wall formation similar to that of embryogenesis or seed development in the mother plants. Results also indicate that the predominant arabinan and arabinose-rich acidic polysaccharides have important functions in cell walls during embryogenesis and in the eraly stages of seed maturation and that galactan, arabinogalactan, or both replace these arabinose-rich polysaccharides after seed maturation.
