Articles | Volume 13, issue 11
Research article
15 Jun 2016
Research article |  | 15 Jun 2016

Contribution of previous year's leaf N and soil N uptake to current year's leaf growth in sessile oak

Stephane Bazot, Chantal Fresneau, Claire Damesin, and Laure Barthes


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Short summary
The origin of N which contributes to N reserves of trees in autumn and to the growth of new organs the following spring is currently poorly documented. The metabolism of various possible N sources (plant and soil) was characterized in sessile oaks. Results revealed that in autumn, roots’ N reserves were formed from foliage N and to a lesser extent from soil N. The following spring, N used for the synthesis of new leaves came first from stored N and thereafter from N uptake from soil.
Final-revised paper