Address of S. Ivanko: Department of Radiobiolog and Biochemistry, University of Agriculture, Nitra, Czechoslovakia.
Investigation on the Assimilation of Nitrogen by Maize Roots and the Transport of Some Major Nitrogen Compounds by Xylem Sap
III. Transport of Nitrogen Compounds by Xylem Sap
Article first published online: 28 APR 2006
Volume 24, Issue 3, pages 355–362, June 1971
How to Cite
IVANKO, S. and INGVERSEN, J. (1971), Investigation on the Assimilation of Nitrogen by Maize Roots and the Transport of Some Major Nitrogen Compounds by Xylem Sap. Physiologia Plantarum, 24: 355–362. doi: 10.1111/j.1399-3054.1971.tb03503.x
- Issue published online: 28 APR 2006
- Article first published online: 28 APR 2006
- (Received April 21, 1970)
Xylem sap was collected from nitrogen-starved maize plants and investigations were made on the nitrogen transported. It appears from the results that several pools for different amino acids exist, which have different relations to the transport of nitrogen taken up. While in maize roots Glu, Glu-NH2 and Arg are transported directly from the place of their synthesis, the transported Asp and Ala predominantly derive from the pool of amino acids synthetized before application of nitrogen. An explanation of this observation is offered.