The Influence of Growth Regulating Substances on the Development of Enhanced Metabolic Rates in Thin Slices of Beetroot Storage Tissue

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Abstract
The rates of respiration, uptake of phosphate and activity of the enzyme invertase were measured in thin disks of beet root tissue: these increase dramatically if the tissue has been incubated in an aqueous medium for 18 hr. before assay. If 10-3 [image] indole-3-acetic acid or 10-4 [image] kinetin were added to the incubation medium, no increase in metabolic activity of the disks was observed; gibberellic acid had no inhibitory activity. Synthetic growth regulating compounds do not prevent an increased metabolic rate.