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@ARTICLE{Walter:51536,
      author       = {Walter, A. and Spies, H. and Terjung, S. and Kuesters, R.
                      and Kirchgeßner, N. and Schurr, U.},
      title        = {{S}patio-temporal dynamics of expansion growth in roots :
                      automatic quantification of diurnal course and temperature
                      response by digital image sequence processing},
      journal      = {The journal of experimental botany},
      volume       = {53},
      issn         = {0022-0957},
      address      = {Oxford},
      publisher    = {Univ. Press},
      reportid     = {PreJuSER-51536},
      pages        = {689 - 698},
      year         = {2002},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {A newly developed technique based on image sequence
                      analysis allows automatic and precise quantification of the
                      dynamics of the growth velocity of the root tip, the
                      distribution of expansion growth rates along the entire
                      growth zone and the oscillation frequencies of the root tip
                      during growth without the need of artificial landmarks.
                      These three major parameters characterizing expansion growth
                      of primary roots can be analysed over several days with high
                      spatial (20 mum) and temporal resolution (several minutes)
                      as the camera follows the growing root by an
                      image-controlled root tracking device. In combination with a
                      rhizotron set up for hydroponic plant cultivation the impact
                      of rapid changes of environmental factors can be assessed.
                      First applications of this new system proved the absence of
                      diurnal variation of root growth in Zea mays under constant
                      temperature conditions. The distribution profile of relative
                      elemental growth rate (REGR) showed two maxima under
                      constant and varying growth conditions. Lateral oscillatory
                      movements of growing root tips were present even under
                      constant environmental conditions. Dynamic changes in
                      velocity- and REGR-distribution within 1 h could be
                      quantified after a step change in temperature from 21
                      degreesC to 26 degreesC. Most prominent growth responses
                      were found in the zone of maximal root elongation.},
      keywords     = {J (WoSType)},
      cin          = {ICG-III},
      ddc          = {580},
      cid          = {I:(DE-Juel1)VDB49},
      pnm          = {Chemie und Dynamik der Geo-Biosphäre},
      pid          = {G:(DE-Juel1)FUEK257},
      shelfmark    = {Plant Sciences},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000174400400013},
      doi          = {10.1093/jexbot/53.369.689},
      url          = {https://juser.fz-juelich.de/record/51536},
}