2-Desoxy-D-Glukose-β-Fruktosid als „marker‟ des Kohlenhydrat-Ferntransportes bei höheren Pflanzen (original) (raw)

Biochemie und Physiologie der Pflanzen

Abstract

Summary Transport and metabolism of 2-deoxy-D-glucose (2-deG) have been investigated in young maize seedlings. 2-deG taken up from the medium is phosphorylated by the cells of root tips and by the isolated scutellum and is largely transformed to a β -fructoside that is analogous to sucrose. In comparison with the whole content of soluble 2-deG- containing compounds in the tissues the portion of free 2-deG is small. 2-deG given to the scutellum of isolated embryos quickly participates in the reaction of the synthesis of sucrose and is rapidly transported as 2-deoxy-D-glucose- β -fructoside via phloem to the attraction centres of the root and the shoot. “2-deoxy-sucrose” and 2-deG-P are chiefly accumulated in the root tip. The use of 2-deG for the investigation of long distance transport of carbohydrates in higher plants is discussed.

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