Abstract:
:Numerous studies have demonstrated a rapid increase in the respiration rate during aging of slices of tuber and storage roots. To determine the molecular mechanisms of this phenomenon, the role of enzyme binding to the subcellular particulate fraction has been assessed in carrot (Daucus carota L.) and sugar beet (Beta vulgaris L.). Soluble versus particulate fractions were separated by centrifugation at 16,000g and both fractions assayed for the activities of six glycolytic enzymes. Preparations from sliced and aged tissues showed elevated percentages of five enzymes associated with the particulate fraction as compared with controls. The stimulation of respiration which occurs during aging of underground storage organ slices may result, in part, from an association of enzymes with the particulate fraction of the cell promoting an elevated glycolytic rate.
journal_name
Plant Physioljournal_title
Plant physiologyauthors
Moorhead GB,Plaxton WCdoi
10.1104/pp.86.2.348subject
Has Abstractpub_date
1988-02-01 00:00:00pages
348-51issue
2eissn
0032-0889issn
1532-2548journal_volume
86pub_type
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