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article/chapitre/communication
A. Peuke ; W. Hartung ; W. Jeschke | 1994Seedlings of Ricinus communis L. cultivated in quartz sand were supplied with a nutrient solution containing either 0.2 mol m(-3) NO3- or 4.0 mol m(-3) NO3- as the nitrogen source to obtain insufficiently (low supply, nitrogen-limited) or well-f[...]article/chapitre/communication
P. Tillard ; L. Passama ; A. Gojon | 1998The putative role of phloem amino acids as negative feedback signals for root NO3- uptake was investigated in Ricinus communis L, The NO3--grown plants were subjected to N-deficiency due either to complete N-deprivation, or to localized N-depriv[...]