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STUDIES IN THE RESPIRATORY AND CARBOHYDRATE METABOLISM OF PLANT TISSUES
Author(s) -
BARKER J.
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.tb05478.x
Subject(s) - sugar , sugar phosphates , sweetening , phosphate , respiratory quotient , carbohydrate , phosphoglucomutase , chemistry , hexose , carbohydrate metabolism , biochemistry , metabolism , food science , sweetening agents , enzyme
S ummary The changes of various phosphate compounds were determined during the increase in rate of CO 2 output and of sugar content which occurred in low‐sugar potatoes at 1° C. The contents of phosphate compounds were also estimated in high‐ and low‐sugar potatoes at 10° C. The increase in rate of CO 2 output associated with higher sugar content could not be attributed wholly to an increase in the amounts of the hexose mono‐ and di‐phosphates; possible explanations are given. The changes observed in glucose‐1‐phosphate do not afford any explanation of the mechanism of sweetening and de‐sweetening in potatoes. In different metabolic data the quotient, glucose‐1‐phosphate/glucose‐6‐phosphate, remained close to that for phosphoglucomutase in vitro .