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@ARTICLE{Sun:867593,
      author       = {Sun, Zhaoan and Wu, Shuxia and Zhu, Biao and Zhang, Yiwen
                      and Bol, Roland and Chen, Qing and Meng, Fanqiao},
      title        = {{V}ariation of 13 {C} and 15 {N} enrichments in different
                      plant components of labeled winter wheat ( {T}riticum
                      aestivum {L}.)},
      journal      = {PeerJ},
      volume       = {7},
      issn         = {2167-8359},
      address      = {London [u.a.]},
      publisher    = {PeerJ, Inc.},
      reportid     = {FZJ-2019-06214},
      pages        = {e7738 -},
      year         = {2019},
      abstract     = {Information on the homogeneity and distribution of 13carbon
                      (13C) and nitrogen (15N) labeling in winter wheat (Triticum
                      aestivum L.) is limited. We conducted a dual labeling
                      experiment to evaluate the variability of 13C and 15N
                      enrichment in aboveground parts of labeled winter wheat
                      plants. Labeling with 13C and 15N was performed on
                      non-nitrogen fertilized (−N) and nitrogen fertilized (+N,
                      250 kg N ha−1) plants at the elongation and grain filling
                      stages. Aboveground parts of wheat were destructively
                      sampled at 28 days after labeling. As winter wheat growth
                      progressed, δ13C values of wheat ears increased
                      significantly, whereas those of leaves and stems decreased
                      significantly. At the elongation stage, N addition tended to
                      reduce the aboveground δ13C values through dilution of C
                      uptake. At the two stages, upper (newly developed) leaves
                      were more highly enriched with 13C compared with that of
                      lower (aged) leaves. Variability between individual wheat
                      plants and among pots at the grain filling stage was smaller
                      than that at the elongation stage, especially for the −N
                      treatment. Compared with those of 13C labeling, differences
                      in 15N excess between aboveground components (leaves and
                      stems) under 15N labeling conditions were much smaller. We
                      conclude that non-N fertilization and labeling at the grain
                      filling stage may produce more uniformly 13C-labeled wheat
                      materials, whereas the materials were more highly
                      13C-enriched at the elongation stage, although the δ13C
                      values were more variable. The 15N-enriched straw tissues
                      via urea fertilization were more uniformly labeled at the
                      grain filling stage compared with that at the elongation
                      stage.},
      cin          = {IBG-3},
      ddc          = {610},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {255 - Terrestrial Systems: From Observation to Prediction
                      (POF3-255)},
      pid          = {G:(DE-HGF)POF3-255},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:31592347},
      UT           = {WOS:000488493000004},
      doi          = {10.7717/peerj.7738},
      url          = {https://juser.fz-juelich.de/record/867593},
}