Articles | Volume 14, issue 1
Research article
11 Jan 2017
Research article |  | 11 Jan 2017

The interaction between nitrogen and phosphorous is a strong predictor of intra-plant variation in nitrogen isotope composition in a desert species

Jinxin Zhang, Lianhong Gu, Jingbo Zhang, Rina Wu, Feng Wang, Guanghui Lin, Bo Wu, Qi Lu, and Ping Meng

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Cited articles

Aerts, R.: Nutrient resorption from senescing leaves of perennials: are there general patterns?, J. Ecol., 84, 597–608, 1996.
Amundson, R., Austin, A. T., Schuur, E. A. G., Yoo, K., Matzek, V., Kendall, C., Uebersax, A., Brenner, D., and Baisden, W. T.: Global patterns of the isotopic composition of soil and plant nitrogen, Global Biogeochem. Cy., 17, 1031,, 2003.
Austin, A. T. and Sala, O. E.: Foliar δ15N is negatively correlated with rainfall along the IGBP transect in Australia, Aust. J. Plant Physiol., 26, 293–295, 1999.
Baas, A. C. W. and Nield, J. M.: Modelling vegetated dune landscapes, Geophys. Res. Lett., 34, L06405,, 2007.
Bagni, N. and Tassoni, A.: Biosynthesis, oxidation and conjugation of aliphatic polyamines in higher plants, Amino Acids, 20, 301–317, 2001.
Short summary
Plant nitrogen (N) isotope composition is an indicator of N cycling. How N isotopes are distributed within plants is not well understood. We found intra-plant variations in N isotopes were related to organ N and phosphorous (P) contents and predicted by the N–P interaction. We hypothesized that plant N volatilization, resorption and remobilization of N and P from senescing leaves, and mixing of the re-translocated foliar N and P, are responsible for the observed intra-plant N isotope variations.
Final-revised paper