Intracellular distribution of phosphate in cultured Humulus lupulus cells growing at elevated exogenous phosphate concentrations

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Abstract
The distribution of inorganic phosphate (Pi) between the cytoplasm and the vacuole of Humulus lupulus L. cells grown in suspension culture at different exogenous Pi levels was examined by 31-P nuclear magnetic resonance. In growing cells excess Pi accumulated in the vacuoles and the inhibitory effect of high exogenous Pi was not associated with a change in the cytoplasmic Pi level or with a change in the cytoplasmic pH.