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Title

Differences in the composition of cell wall polysaccharides between embryogenic and non embryogenic calli from medicago arborea L.

AuthorsEndress V.; Barriuso, Jorge ; Rupérez Antón, Pilar ; Martín J.P.; Blázquez A.; Villalobos N.; Guerra H.; Martín L.
Issue DateJun-2009
PublisherSpringer
CitationPlant Cell, Tissue and Organ Culture 97(3): 323- 329 (2009)
AbstractAnalysis of cell wall polysaccharide composition of embryogenic and non-embryogenic calli obtained from hypocotyl and petiole explants from Medicago arborea L. revealed significant differences. For calli induced from both hypocotyls and petioles, levels of total sugars, pectins, and hemicelluloses were higher in embryogenic than in non-embryogenic calli. Whereas in the residual cellulose fraction, the highest levels of sugar were detected in non-embryogenic calli. When comparing the two donor sources of callus explants, the highest total sugar levels were detected in embryogenic calli induced from petioles, mainly in the pectin fraction and to a lesser extent in the hemicellulose fraction. Moreover, analysis of uronic acids revealed higher levels in embryogenic calli, primarily in the pectin fraction. Analysis of those sugars associated with cell walls of calli suggested that these polysaccharides consisted of pectic polysaccharides and glucans, and that their levels were higher in embryogenic than non-embryogenic calli.
URIhttp://hdl.handle.net/10261/82881
DOI10.1007/s11240-009-9531-0
Identifiersissn: 0167-6857
Appears in Collections:(IF) Artículos
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