Articles | Volume 14, issue 1
https://doi.org/10.5194/bg-14-131-2017
https://doi.org/10.5194/bg-14-131-2017
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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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.
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