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@ARTICLE{Ainsworth:55988,
      author       = {Ainsworth, E. A. and Rogers, A. and Leakey, A. D. B. and
                      Heady, L. E. and Gibon, Y. and Stitt, M. and Schurr, U.},
      title        = {{D}oes elevated atmospheric [{CO}2] alter diurnal {C}
                      uptake and the balance of {C} and {N} metabolites in growing
                      and fully expanded soybean leaves?},
      journal      = {The journal of experimental botany},
      volume       = {58},
      issn         = {0022-0957},
      address      = {Oxford},
      publisher    = {Univ. Press},
      reportid     = {PreJuSER-55988},
      pages        = {579 - 591},
      year         = {2007},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {Increases in growth at elevated [CO2] may be constrained by
                      a plant's ability to assimilate the nutrients needed for new
                      tissue in sufficient quantity to match the increase in
                      carbon fixation and/or the ability to transport those
                      nutrients and carbon in sufficient quantity to growing
                      organs and tissues. Analysis of metabolites provides an
                      indication of shifts in carbon and nitrogen partitioning due
                      to rising atmospheric [CO2] and can help identify where
                      bottlenecks in carbon utilization occur. In this study, the
                      carbon and nitrogen balance was investigated in growing and
                      fully expanded soybean leaves exposed to elevated [CO2] in a
                      free air CO2 enrichment experiment. Diurnal photosynthesis
                      and diurnal profiles of carbon and nitrogen metabolites were
                      measured during two different crop growth stages. Diurnal
                      carbon gain was increased by c. $20\%$ in elevated [CO2] in
                      fully expanded leaves, which led to significant increases in
                      leaf hexose, sucrose, and starch contents. However, there
                      was no detectable difference in nitrogen-rich amino acids
                      and ureides in mature leaves. By contrast to mature leaves,
                      developing leaves had high concentrations of ureides and
                      amino acids relative to low concentrations of carbohydrates.
                      Developing leaves at elevated [CO2] had smaller pools of
                      ureides compared with developing leaves at ambient [CO2],
                      which suggests N assimilation in young leaves was improved
                      by elevated [CO2]. This work shows that elevated [CO2]
                      alters the balance of carbon and nitrogen pools in both
                      mature and growing soybean leaves, which could have
                      down-stream impacts on growth and productivity.},
      keywords     = {Amino Acids: metabolism / Carbohydrate Metabolism / Carbon:
                      metabolism / Carbon Dioxide: metabolism / Circadian Rhythm /
                      Nitrogen: metabolism / Nitrogen Fixation / Photosynthesis /
                      Plant Leaves: growth $\&$ development / Plant Leaves:
                      metabolism / Soybeans: growth $\&$ development / Soybeans:
                      metabolism / Amino Acids (NLM Chemicals) / Carbon Dioxide
                      (NLM Chemicals) / Carbon (NLM Chemicals) / Nitrogen (NLM
                      Chemicals) / J (WoSType)},
      cin          = {ICG-3},
      ddc          = {580},
      cid          = {I:(DE-Juel1)ICG-3-20090406},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Plant Sciences},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:17158509},
      UT           = {WOS:000244428400019},
      doi          = {10.1093/jxb/erl233},
      url          = {https://juser.fz-juelich.de/record/55988},
}