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@ARTICLE{Bauke:902686,
      author       = {Bauke, Sara L. and Schnepf, Andrea and Sperber, Christian
                      and Orlowski, Natalie and Lewandowski, Hans and Selzner,
                      Tobias and Tamburini, Federica and Amelung, Wulf},
      title        = {{T}racing uptake and translocation of phosphorus in wheat
                      using oxygen isotopes and mathematical modelling},
      journal      = {The new phytologist},
      volume       = {230},
      number       = {5},
      issn         = {0028-646X},
      address      = {Oxford [u.a.]},
      publisher    = {Wiley-Blackwell},
      reportid     = {FZJ-2021-04473},
      pages        = {1883 - 1895},
      year         = {2021},
      abstract     = {Understanding P uptake in soil–plant systems requires
                      suitable P tracers. The stable oxygen isotope ratio in
                      phosphate (expressed as δ18OP) is an alternative to
                      radioactive labelling, but the degree to which plants
                      preserve the δ18OP value of the P source is unclear. We
                      hypothesised that the source signal will be preserved in
                      roots rather than shoots. In soil and hydroponic experiments
                      with spring wheat (Triticum aestivum), we replaced
                      irrigation water by 18O-labelled water for up to 10 d. We
                      extracted plant inorganic phosphates with trichloroacetic
                      acid (TCA), assessed temporal dynamics of δ18OTCA-P values
                      after changing to 18O-labelled water and combined the
                      results with a mathematical model. Within 1 wk, full
                      equilibration of δ18OTCA-P values with the isotope value of
                      the water in the growth medium occurred in shoots but not in
                      roots. Model results further indicated that root δ18OTCA-P
                      values were affected by back transport of phosphate from
                      shoots to roots, with a greater contribution of source P at
                      higher temperatures when back transport was reduced. Root
                      δ18OTCA-P partially preserved the source signal, providing
                      an indicator of P uptake sources. This now needs to be
                      tested extensively for different species, soil and climate
                      conditions to enable application in future ecosystem
                      studies.},
      cin          = {IBG-3},
      ddc          = {580},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {2173 - Agro-biogeosystems: controls, feedbacks and impact
                      (POF4-217) / DFG project 390732324 - EXC 2070: PhenoRob -
                      Robotik und Phänotypisierung für Nachhaltige
                      Nutzpflanzenproduktion},
      pid          = {G:(DE-HGF)POF4-2173 / G:(GEPRIS)390732324},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:33638193},
      UT           = {WOS:000636803200001},
      doi          = {10.1111/nph.17307},
      url          = {https://juser.fz-juelich.de/record/902686},
}