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@ARTICLE{Zhan:281231,
      author       = {Zhan, Ai and Schneider, Hannah and Lynch, Jonathan},
      title        = {{R}educed lateral root branching density improves drought
                      tolerance in maize},
      journal      = {Plant physiology},
      volume       = {168},
      number       = {4},
      issn         = {0032-0889},
      address      = {Rockville, Md.},
      publisher    = {Soc.},
      reportid     = {FZJ-2016-00930},
      pages        = {1603–1615},
      year         = {2015},
      abstract     = {An emerging paradigm is that root traits that reduce the
                      metabolic costs of soil exploration improve the acquisition
                      of limiting soil resources. Here we test the hypothesis that
                      reduced lateral root branching density will improve drought
                      tolerance in maize (Zea mays) by reducing the metabolic
                      costs of soil exploration, permitting greater axial root
                      elongation, greater rooting depth, and thereby greater water
                      acquisition from drying soil. Maize recombinant inbred lines
                      with contrasting lateral root number and length (FL: few but
                      long; MS: many but short) were grown under water stress in
                      greenhouse mesocosms, in field rainout shelters, and in a
                      second field environment with natural drought. Under water
                      stress in mesocosms, lines with the FL phenotype had
                      substantially less lateral root respiration per unit axial
                      root length, deeper rooting, greater leaf relative water
                      content, greater stomatal conductance, and $50\%$ greater
                      shoot biomass than lines with the MS phenotype. Under water
                      stress in the two field sites, lines with the FL phenotype
                      had deeper rooting, much lighter stem water δ18O signature
                      signifying deeper water capture, 51 to $67\%$ greater shoot
                      biomass at flowering, and $144\%$ greater yield than lines
                      with the MS phenotype. These results entirely support the
                      hypothesis that reduced lateral root branching density
                      improves drought tolerance. The FL lateral root phenotype
                      merits consideration as a selection target to improve the
                      drought tolerance of maize and possibly other cereal crops.},
      cin          = {IBG-2},
      ddc          = {580},
      cid          = {I:(DE-Juel1)IBG-2-20101118},
      pnm          = {582 - Plant Science (POF3-582)},
      pid          = {G:(DE-HGF)POF3-582},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:26077764},
      UT           = {WOS:000359317400036},
      doi          = {10.1104/pp.15.00187},
      url          = {https://juser.fz-juelich.de/record/281231},
}