% IMPORTANT: The following is UTF-8 encoded.  This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.

@ARTICLE{Nitschke:20008,
      author       = {Nitschke, U. and Ruth, A.A. and Dixneuf, S. and Stengel,
                      D.B.},
      title        = {{M}olecular iodine emission rates and photosynthetic
                      performance of different thallus parts of {L}aminaria
                      digitata ({P}haeophyceae) during emersion},
      journal      = {Planta},
      volume       = {233},
      issn         = {0032-0935},
      address      = {Berlin},
      publisher    = {Springer},
      reportid     = {PreJuSER-20008},
      pages        = {737 - 748},
      year         = {2011},
      note         = {The authors thank Professor Colin O'Dowd (School of Physics
                      and Ryan Institute, NUI Galway), Dr. Solene Connan (Botany
                      and Plant Science and Ryan Institute, NUI Galway) and Dr.
                      Stewart Vaughan (School of Chemistry, University of Leeds,
                      UK) for comments on the experimental design and Dr. Jerome
                      Sheahane (Statistics and Applied Mathematics, School of
                      Mathematics, NUI Galway) for his help with statistical
                      analyses. UN and SD gratefully appreciate financial support
                      through the Irish Research Council for Science, Engineering
                      and Technology (IRCSET 'Embark Initiative').},
      abstract     = {The emission of molecular iodine (I(2)) from the stipe, the
                      meristematic area and the distal blade of the brown
                      macroalga Laminaria digitata (Hudson) Lamouroux
                      (Phaeophyceae) was monitored under low light and dark
                      conditions. Photosynthetic parameters were determined to
                      investigate both the extent of stress experienced by
                      different thallus parts and the effects of emersion on
                      photosynthesis. Immediately after air exposure, intense I(2)
                      emission was detectable from all thallus parts. I(2)
                      emission declined continuously over a period of 180 min
                      following the initial burst, but was not affected by the
                      light regime. The total number of mole of I(2) emitted by
                      stipes was approximately 10 times higher than those emitted
                      from other thallus parts. Initial I(2) emission rates
                      (measured within 30 min of exposure to air) were highest for
                      stipes (median values: 2,999 and 5,222 pmol g(-1) dw min(-1)
                      in low light and dark, respectively) and lower, by one order
                      of magnitude, for meristematic regions and distal blades.
                      After exposure to air for between 60 and 180 min, I(2)
                      emission rates of all thallus parts were reduced by
                      $70-80\%.$ Air exposure resulted in a decrease of the
                      maximum photosystem II (PSII) efficiency (F(v)/F(m)) by
                      $3\%,$ and in a $25-55\%$ increase of the effective PSII
                      quantum efficiency (F(v)/F'(m)); this was caused by a higher
                      fraction of open reaction centres (q(P)), whereas the
                      efficiency of the latter in capturing energy (F'(v)/F'(m))
                      remained constant. The results indicate the presence of an
                      iodine pool which is easily volatilised and depleted due to
                      air exposure, even under apparently low stress conditions.},
      keywords     = {Air / Biomass / Iodine: analysis / Laminaria: physiology /
                      Photosynthesis: physiology / Plant Leaves: physiology / Time
                      Factors / Water / Iodine (NLM Chemicals) / Water (NLM
                      Chemicals) / J (WoSType)},
      cin          = {IEK-8},
      ddc          = {580},
      cid          = {I:(DE-Juel1)IEK-8-20101013},
      pnm          = {Atmosphäre und Klima},
      pid          = {G:(DE-Juel1)FUEK491},
      shelfmark    = {Plant Sciences},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:21188416},
      UT           = {WOS:000288804000008},
      doi          = {10.1007/s00425-010-1334-3},
      url          = {https://juser.fz-juelich.de/record/20008},
}