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SUGAR ABSORPTION AND COMPARTMENTATION IN POTATO TUBER SLICES *
Author(s) -
HARDY P. J.,
NORTON G.
Publication year - 1968
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1968.tb05463.x
Subject(s) - sucrose , fructose , sugar , chemistry , hydrolysis , biochemistry , carbohydrate , absorption (acoustics) , physics , acoustics
S ummary The uptake and utilization of [ 14 C]sucrose, [ 14 C]glucose and [ 14 C]fructose by mature and immature potato tuber slices was studied. Both tissues absorbed [ 14 C]glucose faster than [ l4 C]fructose but once absorbed, the hexoses were utilized similarly. In contrast, the greater part of the labelled sugars formed on administration of [ 14 C]sucrose was sequestered at sites separate from the metabolic centres. Sucrose was taken up from the medium against a concentration gradient and transferred to metabolically inactive storage compartments without being hydrolysed either at the cell surface or at any stage during transit.