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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Cited articles

Barbaroux, C., Bréda, N., and Dufrêne, E.: Distribution of above-ground and below-ground carbohydrate reserves in adult trees of two contrasting broad-leaved species (Quercus petraea and Fagus sylvatica), New Phytol., 157, 605–615, 2003.
Barnard, R., Barthes, L., and Leadley, P.: Short-Term Uptake of 15N by a Grass and Soil Micro-Organisms after Long-Term Exposure to Elevated CO2, Plant Soil, 280, 91–99,, 2006.
Bazot, S., Barthes, L., Blanot, D., and Fresneau, C.: Distribution of non-structural nitrogen and carbohydrate compounds in mature oak trees in a temperate forest at four key phenological stages, Trees-Struct. Funct., 27, 1023–1034,, 2013.
Bloor, J. M. G., Niboyet, A., Leadley, P. W., and Barthes, L.: CO2 and inorganic N supply modify competition for N between co-occurring grass plants, tree seedlings and soil microorganisms, Soil Biol. Biochem., 41, 544–552,, 2009.
Breda, N. and Granier, A.: Intra- and interannual variations of transpiration, leaf area index and radial growth of a sessile oak stand (Quercus petraea), Ann. Sci. Forest, 53, 521–536,, 1996.
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