Translocation of amino acids in the xylem of apple (Malus domestica Borkh.) trees in spring as a consequence of both N remobilization and root uptake.

@article{Malaguti2001TranslocationOA,
  title={Translocation of amino acids in the xylem of apple (Malus domestica Borkh.) trees in spring as a consequence of both N remobilization and root uptake.},
  author={D Malaguti and Peter Millard and Renate Wendler and Angus Hepburn and Massimo Tagliavini},
  journal={Journal of experimental botany},
  year={2001},
  volume={52 361},
  pages={1665-71}
}
Nitrogen is remobilized from storage for the growth of Malus domestica leaves each spring. Seasonal patterns of N translocation in the xylem sap as a consequence of remobilization were determined in 2-year-old 'Golden delicious' trees grafted on M9 rootstocks. The trees were grown in sand culture and (15)NH(4)(15)NO(3) at 10.4 atom% abundance supplied during August-September. The following year no further N was supplied and destructive harvests were taken during bud burst and leaf growth to… CONTINUE READING
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