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@ARTICLE{PEUKE:172101,
      author       = {PEUKE, ANDREAS D. and GESSLER, ARTHUR and TRUMBORE, SUSAN
                      and Windt, Carel and HOMAN, NATALIA and GERKEMA, EDO and VAN
                      AS, HENK},
      title        = {{P}hloem flow and sugar transport in {R}icinus communis
                      {L}. is inhibited under anoxic conditions of shoot or roots},
      journal      = {Plant, cell $\&$ environment},
      volume       = {38},
      number       = {3},
      issn         = {0140-7791},
      address      = {Oxford [u.a.]},
      publisher    = {Wiley-Blackwell},
      reportid     = {FZJ-2014-05644},
      pages        = {433–447},
      year         = {2015},
      abstract     = {Anoxic conditions should hamper the transport of sugar in
                      the phloem, as this is an active process. The canopy is a
                      carbohydrate source and the roots are carbohydrate sinks. By
                      fumigating the shoot with N2 or flooding the rhizosphere,
                      anoxic conditions in the source or sink, respectively, were
                      induced. Volume flow, velocity, conducting area and
                      stationary water of the phloem were assessed by non-invasive
                      magnetic resonance imaging (MRI) flowmetry. Carbohydrates
                      and δ13C in leaves, roots and phloem saps were
                      determined.Following flooding, volume flow and conducting
                      area of the phloem declined and sugar concentrations in
                      leaves and in phloem saps slightly increased.
                      Oligosaccharides appeared in phloem saps and after 3 d,
                      carbon transport was reduced to $77\%.$ Additionally, the
                      xylem flow declined and showed finally no daily rhythm.
                      Anoxia of the shoot resulted within minutes in a reduction
                      of volume flow, conductive area and sucrose in the phloem
                      sap decreased. Sugar transport dropped to below $40\%$ by
                      the end of the N2 treatment. However, volume flow and phloem
                      sap sugar tended to recover during the N2 treatment.Both
                      anoxia treatments hampered sugar transport. The flow
                      velocity remained about constant, although phloem sap sugar
                      concentration changed during treatments. Apparently, stored
                      starch was remobilized under anoxia.},
      cin          = {IBG-2},
      ddc          = {570},
      cid          = {I:(DE-Juel1)IBG-2-20101118},
      pnm          = {582 - Plant Science (POF3-582)},
      pid          = {G:(DE-HGF)POF3-582},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000349994600006},
      pubmed       = {pmid:24995994},
      doi          = {10.1111/pce.12399},
      url          = {https://juser.fz-juelich.de/record/172101},
}