Summary
One part of a split root system of wheat seedlings received full nutrient solution with15N-nitrate, the other received an identical solution with unlabelled nitrate. Appearance of labelled amino compounds was measured in the xylem sap exuding from roots not supplied directly with15N-nitrate after removal of the15N-nitrate-fed roots. This material indicates cycling of nitrogen from the shoots and through the roots. About 60 per cent of the nitrogen in the xylem appears to be cycling in this way.
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References
Clarkson D T 1986In Fundamental, Ecological and Agricultural Aspects of Nitrogen Metabolism in Higher Plants. Eds. M Lambers, J J Neeteson and I Stulen. Martinus Nijhoff Publishers, Dordrecht. pp 3–27.
Cooper H D, Clarkson D T, Ponting H E and Loughman B C 1985 This Symposium.
Keltjens W G, Nieuwenhuis J W and Nelemans J A 1985 This Symposium.
Kirkman M A 1974 J Chromat 97, 175–191.
Lambers H 1985 Proc. SEB symposium: Root structure and function.
Lambers H, Simpson R J, Beilharz V C and Dalling M J 1982 Physiol. Plant. 56, 421–429.
Layzell D B, Pate J S, Atkins C A and Canvin D T 1981 Plant Physiol. 67, 30–36.
Marshall R B and Whiteway J N 1985 Analyst. 110, 867–871.
Oghoghorie C G O and Pate J S 1972 Planta 103, 35–49.
Simpson R J, Lambers H and Dalling M J 1982 Physiol. Plant. 56, 11–17.
Pate J S, Layzell D B and McNeil D L 1979 Plant Physiol. 63, 730–737.
Wallsgrove R M, Keys A J, Lea P J and Miflin B J 1983 Plant Cell Environ. 6, 301–309
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Cooper, H.D., Clarkson, D.T., Johnston, M.G. et al. Cycling of amino-nitrogen between shoots and roots in wheat seedlings. Plant Soil 91, 319–322 (1986). https://doi.org/10.1007/BF02198115
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DOI: https://doi.org/10.1007/BF02198115