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@ARTICLE{Jorda:909806,
      author       = {Jorda, Helena and Ahmed, Mutez A. and Javaux, Mathieu and
                      Carminati, Andrea and Duddek, Patrick and Vetterlein, Doris
                      and Vanderborght, Jan},
      title        = {{F}ield scale plant water relation of maize ({Z}ea mays)
                      under drought – impact of root hairs and soil texture},
      journal      = {Plant and soil},
      volume       = {478},
      issn         = {0032-079X},
      address      = {Dordrecht [u.a.]},
      publisher    = {Springer Science + Business Media B.V},
      reportid     = {FZJ-2022-03427},
      pages        = {59-84},
      year         = {2022},
      abstract     = {Background and aimsImpact of drought on crop growth depends
                      on soil and root hydraulic properties that determine the
                      access of plant roots to soil water. Root hairs may increase
                      the accessible water pool but their effect depends on soil
                      hydraulic properties and adaptions of root systems to
                      drought. These adaptions are difficult to investigate in pot
                      experiments that focus on juvenile plants.MethodsA wild-type
                      and its root hairless mutant maize (Zea mays) were grown in
                      the field in loam and sand substrates during two growing
                      seasons with a large precipitation deficit. A comprehensive
                      dataset of soil and plant properties and monitored variables
                      were collected and interpreted using simulations with a
                      mechanistic root water uptake model.ResultsTotal crop water
                      use was similar in both soils and for both genotypes whereas
                      shoot biomass was larger for the wild type than for the
                      hairless mutant and did not differ between soils. Total
                      final root length was larger in sand than in loam but did
                      not differ between genotypes. Simulations showed that root
                      systems of both genotypes and in both soils extracted all
                      plant available soil water, which was similar for sand and
                      loam, at a potential rate. Leaf water potentials were
                      overestimated by the model, especially for the hairless
                      mutant in sand substrate because the water potential drop in
                      the rhizosphere was not considered.ConclusionsA direct
                      effect of root hairs on water uptake was not observed but
                      root hairs might influence leaf water potential dependent
                      growth.},
      cin          = {IBG-3},
      ddc          = {580},
      cid          = {I:(DE-Juel1)IBG-3-20101118},
      pnm          = {2173 - Agro-biogeosystems: controls, feedbacks and impact
                      (POF4-217)},
      pid          = {G:(DE-HGF)POF4-2173},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000850758800001},
      doi          = {10.1007/s11104-022-05685-x},
      url          = {https://juser.fz-juelich.de/record/909806},
}