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@ARTICLE{Nagel:6244,
      author       = {Nagel, K. A. and Kastenholz, B. and Jahnke, S. and van
                      Dusschoten, D. and Aach, T. and Mühlich, M. and Truhn, D.
                      and Scharr, H. and Terjung, St. and Walter, A. and Schurr,
                      U.},
      title        = {{T}emperature responses of roots: impact on growth, root
                      system architecture and implications for phenotyping},
      journal      = {Functional plant biology},
      volume       = {36},
      issn         = {1445-4408},
      address      = {Collingwood, Victoria},
      publisher    = {CSIRO Publ.},
      reportid     = {PreJuSER-6244},
      pages        = {947 - 959},
      year         = {2009},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {Root phenotyping is a challenging task, mainly because of
                      the hidden nature of this organ. Only recently, imaging
                      technologies have become available that allow us to
                      elucidate the dynamic establishment of root structure and
                      function in the soil. In root tips, optical analysis of the
                      relative elemental growth rates in root expansion zones of
                      hydroponically-grown plants revealed that it is the maximum
                      intensity of cellular growth processes rather than the
                      length of the root growth zone that control the acclimation
                      to dynamic changes in temperature. Acclimation of entire
                      root systems was studied at high throughput in agar-filled
                      Petri dishes. In the present study, optical analysis of root
                      system architecture showed that low temperature induced
                      smaller branching angles between primary and lateral roots,
                      which caused a reduction in the volume that roots access at
                      lower temperature. Simulation of temperature gradients
                      similar to natural soil conditions led to differential
                      responses in basal and apical parts of the root system, and
                      significantly affected the entire root system. These results
                      were supported by first data on the response of root
                      structure and carbon transport to different root zone
                      temperatures. These data were acquired by combined magnetic
                      resonance imaging (MRI) and positron emission tomography (
                      PET). They indicate acclimation of root structure and
                      geometry to temperature and preferential accumulation of
                      carbon near the root tip at low root zone temperatures.
                      Overall, this study demonstrated the value of combining
                      different phenotyping technologies that analyse processes at
                      different spatial and temporal scales. Only such an
                      integrated approach allows us to connect differences between
                      genotypes obtained in artificial high throughput conditions
                      with specific characteristics relevant for field
                      performance. Thus, novel routes may be opened up for
                      improved plant breeding as well as for mechanistic
                      understanding of root structure and function.},
      keywords     = {J (WoSType)},
      cin          = {ICG-3},
      ddc          = {580},
      cid          = {I:(DE-Juel1)ICG-3-20090406},
      pnm          = {Terrestrische Umwelt},
      pid          = {G:(DE-Juel1)FUEK407},
      shelfmark    = {Plant Sciences},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000271464600013},
      doi          = {10.1071/FP09184},
      url          = {https://juser.fz-juelich.de/record/6244},
}