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@INPROCEEDINGS{Andresen:206255,
      author       = {Andresen, Elisa and Kroenlein, Sophie and Mattusch, Jürgen
                      and Wellenreuther, Gerd and Abad, Uriel Arroyo and Stärk,
                      Hans-Joachim and Thomas, George and Kuepper, Hendrik},
      title        = {{P}oster {P}3: {T}oxicity and {D}etoxification of {C}admium
                      in the {A}quaticmacrophyte {C}eratophyllum {D}emersum;
                      session "{M}etal homeostasis and detoxification"},
      issn         = {1432-1327},
      reportid     = {PUBDB-2015-00769},
      year         = {2014},
      note         = {OA},
      abstract     = {The heavy metal cadmium (Cd) is an important pollutant and
                      poisonousto many organisms. We studied the effects of Cd on
                      C.demersum under environmentally relevant conditions. High,
                      moderateand low concentrations of Cd had different effects.
                      Lethally toxicconcentrations (100–200 nM) led to growth
                      stop and the plants’ability to perform photosynthesis
                      (measured as Fv/Fm) decreased morethan twofold, consistent
                      with decreased pigment content. Moderatelytoxic
                      concentrations (10–50 nM) led to reduced growth,
                      slightlyreduced pigment content, but hardly affected
                      photosynthesis (measuredas O2 exchange and as Fv/Fm). Lower
                      concentrations(0.2–5 nM) even had beneficial effects, like
                      enhanced growth rate.When applied in low concentrations, Cd
                      was homogeneously distributedin the whole cross-section of
                      the leaves like a nutrient.Moderate and high Cd
                      concentrations led to sequestration of Cd in thevascular
                      bundle and the epidermis cells, where Cd does not
                      affectphotosynthetic molecules. At toxic Cd concentrations,
                      Zn was redistributedand mainly found in the vein along with
                      Cd, indicatinginhibition of Zn transporters. Consistently,
                      by metalloproteomics(HPLC-ICP-MS) we found that during Cd
                      toxicity concentrations of Cdincreased in fractions of the
                      major photosynthetic complexes while Mgdecreased, suggesting
                      the replacement of Mg by Cd in chlorophylls.Furthermore, the
                      induction of phytochelatins was not proportionalto metal
                      concentration, but had distinct thresholds, specific for
                      each PCspecies. PC3 especially was switch-like induced
                      already at 20 nM Cd,which was previously regarded as
                      non-toxic to most plants. Phytochelatinlevels at the lowest
                      Cd concentrations were not detectable orbelow 0.1 $\%$ of
                      the level at sublethally toxic concentrations,
                      suggestingthat they do not have another function than metal
                      detoxification.},
      month         = {Aug},
      date          = {2014-08-24},
      organization  = {12th European Biological Inorganic
                       Chemistry Conference, Zurich
                       (Switzerland), 24 Aug 2014 - 28 Aug
                       2014},
      cin          = {DOOR},
      ddc          = {540},
      cid          = {I:(DE-H253)HAS-User-20120731},
      pnm          = {DORIS Beamline L (POF2-54G13)},
      pid          = {G:(DE-H253)POF2-L-20130405},
      experiment   = {EXP:(DE-H253)D-L-20150101},
      typ          = {PUB:(DE-HGF)6},
      UT           = {WOS:00},
      doi          = {10.1007/s00775-014-1161-2},
      url          = {https://bib-pubdb1.desy.de/record/206255},
}