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@ARTICLE{Walter:44106,
      author       = {Walter, A. and Christ, M. M. and Barron-Gafford, G. A. and
                      Grieve, K. A. and Paige, T. and Murthy, R. and Rascher, U.},
      title        = {{T}he effect of elevated {CO}2 on diel leaf growth cycle,
                      leaf carbohydrate content and canopy growth performance of
                      {P}opulus deltoides},
      journal      = {Global change biology},
      volume       = {11},
      issn         = {1354-1013},
      address      = {Oxford [u.a.]},
      publisher    = {Wiley-Blackwell},
      reportid     = {PreJuSER-44106},
      pages        = {1207 - 1219},
      year         = {2005},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {Image sequence processing methods were applied to study the
                      effect of elevated CO2 on the diel leaf growth cycle for the
                      first time in a dicot plant. Growing leaves of Populus
                      deltoides, in stands maintained under ambient and elevated
                      CO2 for up to 4 years, showed a high degree of heterogeneity
                      and pronounced diel variations of their relative growth rate
                      (RGR) with maxima at dusk. At the beginning of the season,
                      leaf growth did not differ between treatments. At the end of
                      the season, final individual leaf area and total leaf
                      biomass of the canopy was increased in elevated CO2.
                      Increased final leaf area at elevated CO2 was achieved via a
                      prolonged phase of leaf expansion activity and not via
                      larger leaf size upon emergence. The fraction of leaves
                      growing at $30–40\% day−1$ was increased by a factor
                      of two in the elevated CO2 treatment. A transient minimum of
                      leaf expansion developed during the late afternoon in leaves
                      grown under elevated CO2 as the growing season progressed.
                      During this minimum, leaves grown under elevated CO2
                      decreased their RGR to $50\%$ of the ambient value. The
                      transient growth minimum in the afternoon was correlated
                      with a transient depletion of glucose (less than $50\%)$ in
                      the growing leaf in elevated CO2, suggesting diversion of
                      glucose to starch or other carbohydrates, making this
                      substrate temporarily unavailable for growth. Increased leaf
                      growth was observed at the end of the night in elevated CO2.
                      Net CO2 exchange and starch concentration of growing leaves
                      was higher in elevated CO2. The extent to which the
                      transient reduction in diel leaf growth might dampen the
                      overall growth response of these trees to elevated CO2 is
                      discussed.},
      cin          = {ICG-III},
      ddc          = {570},
      cid          = {I:(DE-Juel1)VDB49},
      pnm          = {Chemie und Dynamik der Geo-Biosphäre},
      pid          = {G:(DE-Juel1)FUEK257},
      shelfmark    = {Biodiversity Conservation / Ecology / Environmental
                      Sciences},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000230726600002},
      doi          = {10.1111/j.1365-2486.2005.00990.x},
      url          = {https://juser.fz-juelich.de/record/44106},
}