Journal
PLANT CELL AND ENVIRONMENT
Volume 23, Issue 5, Pages 523-529Publisher
BLACKWELL SCIENCE LTD
DOI: 10.1046/j.1365-3040.2000.00567.x
Keywords
Solanum tuberosum (potato); carbon partitioning; metabolic control analysis; resource allocation; source; sink
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The aim of this work was to investigate the effect of environmental conditions on the control of source to sink carbon Bur in potato during tuberization, Top down metabolic control analysis was used to quantitatively determine the extent to which source and sink reactions control the flux from CO2 to the tuber. Under all conditions investigated (beginning of the dark period, low nitrogen availability, variation in temperature) source metabolism accounts for at least 80% of the control. In plants grown with limiting nitrogen, or when measurements were made at low temperature the extent to which source metabolism controls flux increased to 90%.
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