% 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{Mishra:206251,
      author       = {Mishra, Seema and Stärk, Hans-Joachim and Küpper,
                      Hendrik},
      title        = {{A} different sequence of events than previously reported
                      leads to arsenic-induced damage in {C}eratophyllum demersum
                      {L}.},
      journal      = {Metallomics},
      volume       = {6},
      number       = {3},
      issn         = {1756-591X},
      address      = {Cambridge},
      publisher    = {RSC Publ.},
      reportid     = {PUBDB-2015-00765},
      pages        = {444 - 454},
      year         = {2014},
      abstract     = {Arsenic (As) is a common pollutant, and still many
                      questions remain concerning As toxicity mechanisms under
                      environmentally relevant conditions in plants. Here we
                      investigated thresholds and interactions of various proposed
                      As toxicity mechanisms. Experiments were done under
                      environmentally pertinent conditions in the rootless aquatic
                      macrophyte Ceratophyllum demersum L., a model for plant
                      shoots. Arsenic (provided as As(V)) inhibited plant
                      metabolism at much lower concentrations and with a different
                      sequence of events than previously reported. The first
                      observed effect of toxicity was a decrease in pigment
                      concentration, it started even at 0.5 μM As. In contrast to
                      toxic metals, no inhibition of the photosystem II reaction
                      centre (PSIIRC; measured as Fv/Fm) was found at sublethal As
                      concentrations. Instead, the decrease in light harvesting
                      pigments caused a less efficient exciton transfer towards
                      the PSIIRC. At higher As concentrations this led to
                      increased non-photochemical quenching (NPQ) by light
                      harvesting complex II (LHCII). Afterwards, photosynthetic
                      electron transport decreased, but the increase in starch
                      content indicated stronger inhibition of starch consumption
                      than production. At lethal As concentration, photosynthesis
                      was completely inhibited, its malfunction caused oxidative
                      stress and not the other way round as reported previously.
                      Photosynthesis was inhibited before any sign of oxidative
                      stress was observed. Elevated phosphate drastically shifted
                      thresholds of lethal As effects, not only by the known
                      uptake competition but also by modifying uptake regulation
                      and intracellular processes.},
      cin          = {DOOR ; HAS-User},
      ddc          = {690},
      cid          = {I:(DE-H253)HAS-User-20120731},
      pnm          = {DORIS Beamline L (POF2-54G13) / PETRA Beamline P06
                      (POF2-54G14) / FS-Proposal: I-20110682 (I-20110682) /
                      FS-Proposal: I-20120397 (I-20120397)},
      pid          = {G:(DE-H253)POF2-L-20130405 / G:(DE-H253)POF2-P06-20130405 /
                      G:(DE-H253)I-20110682 / G:(DE-H253)I-20120397},
      experiment   = {EXP:(DE-H253)D-L-20150101 / EXP:(DE-H253)P-P06-20150101},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000333565800006},
      pubmed       = {pmid:24382492},
      doi          = {10.1039/c3mt00317e},
      url          = {https://bib-pubdb1.desy.de/record/206251},
}