Alkaline beta -fructofuranosidases of tuberous roots: possible physiological function

Ricardo, C.P.P. (1974) Alkaline beta -fructofuranosidases of tuberous roots: possible physiological function. Planta, 118 (4). pp. 333-343.

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Abstract

Alkaline invertase of carrot roots did not hydrolyze raffinose but acid invertase from the same tissue showed with raffinose about 60% of the activity found with sucrose. In both carrot and turnip roots the activity of the 2 invertases was inhibited by fructose to a different extent, the Ki value being 4 X 10-2M and 3 X 10-1M for the alkaline and acid invertases, respectively. It is suggested that fructose inhibition of acid invertase is of no physiological significance but that hexoses may regulate alkaline invertase activity. The reducing sugar content and the activity of alkaline invertase were positively correlated in mature tuberous roots of several species and cvs

Item Type: Article
Author Affiliation: Estacao Agronomica Nacional, Oeiras, Portugal
Subjects: Plant Production
Plant Physiology and Biochemistry > Plant Physiology
Plant Physiology and Biochemistry > Biochemistry
Divisions: General
Depositing User: Mr B Krishnamurthy
Date Deposited: 23 May 2012 13:25
Last Modified: 23 May 2012 13:25
Official URL: http://dx.doi.org/10.1007/BF00385583
URI: http://eprints.icrisat.ac.in/id/eprint/5657

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