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@ARTICLE{Dodd:187907,
      author       = {Dodd, I. C. and Puertolas, J. and Huber, K. and
                      Perez-Perez, J. G. and Wright, H. R. and Blackwell, M. S.
                      A.},
      title        = {{T}he importance of soil drying and re-wetting in crop
                      phytohormonal and nutritional responses to deficit
                      irrigation},
      journal      = {The journal of experimental botany},
      volume       = {1},
      number       = {1},
      issn         = {0022-0957},
      address      = {Oxford},
      publisher    = {Univ. Press},
      reportid     = {FZJ-2015-01420},
      pages        = {eru532},
      year         = {2015},
      abstract     = {Soil drying and re-wetting (DRW) occurs at varying
                      frequencies and intensities during crop production, and is
                      deliberately used in water-saving irrigation techniques that
                      aim to enhance crop water use efficiency. Soil drying not
                      only limits root water uptake which can (but not always)
                      perturb shoot water status, but also alters root synthesis
                      of phytohormones and their transport to shoots to regulate
                      leaf growth and gas exchange. Re-wetting the soil rapidly
                      restores leaf water potential and leaf growth (minutes to
                      hours), but gas exchange recovers more slowly (hours to
                      days), probably mediated by sustained changes in root to
                      shoot phytohormonal signalling. Partial rootzone drying
                      (PRD) deliberately irrigates only part of the rootzone,
                      while the remainder is allowed to dry. Alternating these wet
                      and dry zones (thus re-wetting dry soil) substantially
                      improves crop yields compared with maintaining fixed wet and
                      dry zones or conventional deficit irrigation, and modifies
                      phytohormonal (especially abscisic acid) signalling.
                      Alternate wetting and drying (AWD) of rice can also improve
                      yield compared with paddy culture, and is correlated with
                      altered phytohormonal (including cytokinin) signalling. Both
                      PRD and AWD can improve crop nutrition, and re-wetting dry
                      soil provokes both physical and biological changes which
                      affect soil nutrient availability. Whether this alters crop
                      nutrient uptake depends on competition between plant and
                      microbes for nutrients, with the rate of re-wetting
                      determining microbial dynamics. Nevertheless, studies that
                      examine the effects of soil DRW on both crop nutritional and
                      phytohormonal responses are relatively rare; thus,
                      determining the cause(s) of enhanced crop yields under AWD
                      and PRD remains challenging.},
      cin          = {IBG-3},
      ddc          = {580},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {255 - Terrestrial Systems: From Observation to Prediction
                      (POF3-255) / 255 - Terrestrial Systems: From Observation to
                      Prediction (POF3-255)},
      pid          = {G:(DE-HGF)POF3-255 / G:(DE-HGF)POF3-255},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000353895000012},
      pubmed       = {pmid:25628330},
      doi          = {10.1093/jxb/eru532},
      url          = {https://juser.fz-juelich.de/record/187907},
}