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@ARTICLE{Copini:866875,
      author       = {Copini, Paul and Vergeldt, Frank J and Fonti, Patrick and
                      Sass-Klaassen, Ute and den Ouden, Jan and Sterck, Frank and
                      Decuyper, Mathieu and Gerkema, Edo and Windt, Carel and Van
                      As, Henk},
      title        = {{M}agnetic resonance imaging suggests functional role of
                      previous year vessels and fibres in ring-porous sap flow
                      resumption},
      journal      = {Tree physiology},
      volume       = {39},
      number       = {6},
      issn         = {0829-318X},
      address      = {Victoria, BC},
      publisher    = {Heron},
      reportid     = {FZJ-2019-05935},
      pages        = {1009 - 1018},
      year         = {2019},
      abstract     = {Reactivation of axial water flow in ring-porous species is
                      a complex process related to stem water content and
                      developmental stage of both earlywood-vessel and leaf
                      formation. Yet empirical evidence with non-destructive
                      methods on the dynamics of water flow resumption in relation
                      to these mechanisms is lacking. Here we combined in vivo
                      magnetic resonance imaging and wood-anatomical observations
                      to monitor the dynamic changes in stem water content and
                      flow during spring reactivation in 4-year-old pedunculate
                      oaks (Quercus robur L.) saplings. We found that previous
                      year latewood vessels and current year developing earlywood
                      vessels form a functional unit for water flow during growth
                      resumption. During spring reactivation, water flow shifted
                      from latewood towards the new earlywood, paralleling the
                      formation of earlywood vessels and leaves. At leaves' full
                      expansion, volumetric water content of previous rings
                      drastically decreased due to the near-absence of water in
                      fibre tissue. We conclude (i) that in ring-porous oak,
                      latewood vessels play an important hydraulic role for
                      bridging the transition between old and new water-conducting
                      vessels and (ii) that fibre and parenchyma provides a place
                      for water storage.},
      cin          = {IBG-2},
      ddc          = {580},
      cid          = {I:(DE-Juel1)IBG-2-20101118},
      pnm          = {582 - Plant Science (POF3-582)},
      pid          = {G:(DE-HGF)POF3-582},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:30896019},
      UT           = {WOS:000491257600009},
      doi          = {10.1093/treephys/tpz019},
      url          = {https://juser.fz-juelich.de/record/866875},
}