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@ARTICLE{Robert:172105,
      author       = {Robert, Elisabeth M. R. and Schmitz, Nele and Copini, Paul
                      and Gerkema, Edo and Vergeldt, Frank J. and Windt, Carel and
                      Beeckman, Hans and Koedam, Nico and AS, Henk Van},
      title        = {{V}isualization of the stem water content of two genera
                      with secondary phloem produced by successive cambia through
                      {M}agnetic {R}esonance {I}maging ({MRI})},
      journal      = {Journal of Plant Hydraulics},
      volume       = {1},
      issn         = {2268-4565},
      address      = {[S.l.]},
      publisher    = {INRA Science and Impact},
      reportid     = {FZJ-2014-05648},
      pages        = {1-e0006},
      year         = {2014},
      abstract     = {Shrubs and trees with secondary phloem tissue produced by
                      successive cambia mainly occur in habitats characterized by
                      a periodical or continuous lack of water availability. The
                      amount of this secondary phloem tissue in stems of Avicennia
                      trees rises with increasing soil water salinity and
                      decreasing inundation frequency. Hence, increased water
                      storage in secondary phloem tissue produced by successive
                      cambia was put forward to be advantageous in harsh
                      environmental conditions. It was however never tested
                      whether the secondary phloem cells over the entire stem of
                      woody species showing this wood anatomical feature are
                      indeed water-filled as expected. In this preliminary and
                      pioneering study, we use magnetic resonance imaging (MRI) to
                      visualize the stem water content of three species with
                      successive cambia, the mangroves Avicennia marina and A.
                      officinalis and the non-mangrove Bougainvillea spectabilis.
                      Measurements were conducted in living plants. We tested the
                      hypothesis that not only the outermost phloem tissue has
                      high water content but also the secondary phloem tissues
                      over the entire stem from the bark inward to the pith,
                      herewith serving as water storage sites. We can conclude
                      that all secondary phloem tissue of both Bougainvillea and
                      Avicennia has high water contents. This aligns with the
                      contribution of secondary phloem tissue produced by
                      successive cambia to ecological success in conditions of
                      physiological drought. Further study should however be done
                      to understand the mechanisms through which this secondary
                      phloem tissue contributes to the water household of plants
                      in conditions of water shortage.},
      cin          = {IBG-2},
      ddc          = {580},
      cid          = {I:(DE-Juel1)IBG-2-20101118},
      pnm          = {89582 - Plant Science (POF2-89582)},
      pid          = {G:(DE-HGF)POF2-89582},
      typ          = {PUB:(DE-HGF)16},
      url          = {https://juser.fz-juelich.de/record/172105},
}