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@ARTICLE{Pieruschka:42744,
      author       = {Pieruschka, R. and Schurr, U. and Jensen, M. and Wolff, W.
                      F. and Jahnke, S.},
      title        = {{L}ateral diffusion of {CO}2 from shaded to illuminated
                      leaf parts affects photosynthesis inside homobaric leaves},
      journal      = {The new phytologist},
      volume       = {169},
      issn         = {0028-646X},
      address      = {Oxford [u.a.]},
      publisher    = {Wiley-Blackwell},
      reportid     = {PreJuSER-42744},
      pages        = {779 - 788},
      year         = {2006},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {Gas exchange is generally regarded to occur between the
                      leaf interior and ambient air, i.e. in vertical (anticlinal)
                      directions of leaf blades. However, inside homobaric leaves,
                      gas movement occurs also in lateral directions. The aim of
                      the present study was to ascertain whether lateral CO2
                      diffusion affects leaf photosynthesis when illuminated
                      leaves are partially shaded. Measurements using gas exchange
                      and chlorophyll fluorescence imaging techniques were
                      performed on homobaric leaves of Vicia faba and Nicotiana
                      tabacum or on heterobaric leaves of Glycine max and
                      Phaseolus vulgaris. For homobaric leaves, gas exchange
                      inside a clamp-on leaf chamber was affected by shading the
                      leaf outside the chamber. The quantum yield of photosystem
                      II (Phi(PSII)) was highest directly adjacent to a
                      light/shade border (LSB). Phi(PSII) decreased in the
                      illuminated leaf parts with distance from the LSB, while the
                      opposite was observed for nonphotochemical quenching. These
                      effects became most pronounced at low stomatal conductance.
                      They were not observed in heterobaric leaves. The results
                      suggest that plants with homobaric leaves can benefit from
                      lateral CO2 flux, in particular when stomata are closed
                      (e.g. under drought stress). This may enhance
                      photosynthetic, instead of nonphotochemical, processes near
                      LSBs in such leaves and reduce the photoinhibitory effects
                      of excess light.},
      keywords     = {Carbon Dioxide: metabolism / Chlorophyll: analysis /
                      Diffusion / Fabaceae: anatomy $\&$ histology / Fabaceae:
                      metabolism / Light / Microscopy, Fluorescence: methods /
                      Phaseolus: anatomy $\&$ histology / Phaseolus: metabolism /
                      Photosynthesis: physiology / Plant Leaves: anatomy $\&$
                      histology / Plant Leaves: metabolism / Soybeans: anatomy
                      $\&$ histology / Soybeans: metabolism / Tobacco: anatomy
                      $\&$ histology / Tobacco: metabolism / Vicia faba: anatomy
                      $\&$ histology / Vicia faba: metabolism / Water: metabolism
                      / Carbon Dioxide (NLM Chemicals) / Chlorophyll (NLM
                      Chemicals) / Water (NLM Chemicals) / J (WoSType)},
      cin          = {ICG-III / JARA-ENERGY},
      ddc          = {580},
      cid          = {I:(DE-Juel1)VDB49 / $I:(DE-82)080011_20140620$},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Plant Sciences},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:16441758},
      UT           = {WOS:000234975800015},
      doi          = {10.1111/j.1469-8137.2005.01605.x},
      url          = {https://juser.fz-juelich.de/record/42744},
}