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@ARTICLE{Mllers:1006430,
      author       = {Müllers, Yannik and Postma, Johannes A. and Poorter,
                      Hendrik and van Dusschoten, Dagmar},
      title        = {{D}eep‐water uptake under drought improved due to locally
                      increased root conductivity in maize, but not in faba bean},
      journal      = {Plant, cell $\&$ environment},
      volume       = {46},
      number       = {7},
      issn         = {0140-7791},
      address      = {Oxford [u.a.]},
      publisher    = {Wiley-Blackwell},
      reportid     = {FZJ-2023-01665},
      pages        = {2046-2060},
      year         = {2023},
      abstract     = {Moderate soil drying can cause a strong decrease in the
                      soil-root system conductance. The resulting impact on root
                      water uptake depends on the spatial distribution of the
                      altered conductance relatively to remaining soil water
                      resources, which is largely unknown. Here, we analyzed the
                      vertical distribution of conductance across root systems
                      using a novel, noninvasive sensor technology on pot-grown
                      faba bean and maize plants. Withholding water for 4 days
                      strongly enhanced the vertical gradient in soil water
                      potential. Therefore, roots in upper and deeper soil layers
                      were affected differently: In drier, upper layers, root
                      conductance decreased by $66\%–72\%,$ causing an
                      amplification of the drop in leaf water potential. In
                      wetter, deeper layers, root conductance increased in maize
                      but not in faba bean. The consequently facilitated
                      deep-water uptake in maize contributed up to $21\%$ of total
                      water uptake at the end of the measurement. Analysis of root
                      length distributions with MRI indicated that the locally
                      increased conductance was mainly caused by an increased
                      intrinsic conductivity and not by additional root growth.
                      Our findings show that plants can partly compensate for a
                      reduced root conductance in upper, drier soil layers by
                      locally increasing root conductivity in wetter layers,
                      thereby improving deep-water uptake.},
      cin          = {IBG-2},
      ddc          = {580},
      cid          = {I:(DE-Juel1)IBG-2-20101118},
      pnm          = {2171 - Biological and environmental resources for
                      sustainable use (POF4-217)},
      pid          = {G:(DE-HGF)POF4-2171},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {36942406},
      UT           = {WOS:000960343500001},
      doi          = {10.1111/pce.14587},
      url          = {https://juser.fz-juelich.de/record/1006430},
}