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Pisum arvense plants were subjected to 5 days of nitrogen deprivation. Then, in the conditions that increased or decreased the root glutamine and asparagine pools, the uptake rates of 0.5 mM NH₄⁺ and 0.5 mM K⁺ were examined. The plants supplied with 1 mM glutamine or asparagine took up ammonium and potassium at rates lower than those for the control plants. The uptake rates of NH₄⁺ and K⁺ were not...
The effects of metabolic and protein synthesis inhibitors on NH₄ ⁺ uptake by Pisum arvense plants at low (0.05 mM) and high (1 mM) external ammonium concentration were studied. In short-time experiments cycloheximide decreased the ammonium uptake rate at low level of NH₄ ⁺ and increased the absorption of NH₄ ⁺ from uptake medium containing high ammonium concentration. Arsenate and azide supplied into...
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