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@ARTICLE{Pieruschka:61325,
      author       = {Pieruschka, R. and Chavarría-Krauser, A. and Cloos, K. and
                      Scharr, H. and Schurr, U. and Jahnke, S.},
      title        = {{P}hotosynthesis can be enhanced by lateral {CO}2 diffusion
                      inside leaves over distances of several millimeters},
      journal      = {The new phytologist},
      volume       = {178},
      issn         = {0028-646X},
      address      = {Oxford [u.a.]},
      publisher    = {Wiley-Blackwell},
      reportid     = {PreJuSER-61325},
      pages        = {335 - 347},
      year         = {2008},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {This study examines the extent to which lateral gas
                      diffusion can influence intercellular CO(2) concentrations
                      (c(i)) and thus photosynthesis in leaf areas with closed
                      stomata. Leaves were partly greased to close stomata
                      artificially, and effects of laterally diffusing CO(2) into
                      the greased areas were studied by gas-exchange measurement
                      and chlorophyll fluorescence imaging. Effective quantum
                      yields (Delta F/F(m)') across the greased areas were
                      analysed with an image-processing tool and transposed into
                      c(i) profiles, and lateral CO(2) diffusion coefficients
                      (D(C'lat)), directly proportional to lateral conductivities
                      (), were estimated using a one-dimensional (1D) diffusion
                      model. Effective CO(2) diffusion distances in Vicia faba
                      (homobaric), Commelina vulgaris (homobaric) and Phaseolus
                      vulgaris (heterobaric) leaves clearly differed, and were
                      dependent on D(C'lat), light intensity, [CO(2)], and [O(2)]:
                      largest distances were approx. 7.0 mm for homobaric leaves
                      (with high D(C'lat)) and approx. 1.9 mm for heterobaric
                      leaves (low D(C'lat)). Modeled lateral CO(2) fluxes indicate
                      large support of photosynthesis over submillimeter distances
                      for leaves with low D(C'lat), whereas in leaves with large
                      D(C'lat), photosynthesis can be stimulated over distances of
                      several millimeters. For the plant species investigated, the
                      surplus CO(2) assimilation rates of the greased leaf areas
                      (A(gr)) differed clearly, depending on lateral
                      conductivities of the respective leaves.},
      keywords     = {Carbon Dioxide: metabolism / Commelina: metabolism /
                      Diffusion / Light / Models, Biological / Phaseolus:
                      metabolism / Photosynthesis: drug effects / Photosystem II
                      Protein Complex: metabolism / Plant Leaves: metabolism /
                      Vicia faba: metabolism / Photosystem II Protein Complex (NLM
                      Chemicals) / Carbon Dioxide (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:18312541},
      UT           = {WOS:000254385100013},
      doi          = {10.1111/j.1469-8137.2008.02368.x},
      url          = {https://juser.fz-juelich.de/record/61325},
}