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@ARTICLE{Correa:904865,
      author       = {Correa, Jose and Postma, Johannes A. and Wojciechowski,
                      Tobias},
      title        = {{P}henotypic response to soil compaction varies among
                      genotypes and correlates with plant size in sorghum},
      journal      = {Plant and soil},
      volume       = {472},
      issn         = {0032-079X},
      address      = {Dordrecht [u.a.]},
      publisher    = {Springer Science + Business Media B.V},
      reportid     = {FZJ-2022-00182},
      pages        = {59 - 72},
      year         = {2022},
      abstract     = {AbstractAimsSoil compaction is a major yield-reducing
                      factor worldwide and imposes physico-chemical constraints to
                      plant growth and development. Facing limitations, roots can
                      adapt and compensate for loss of functioning through their
                      plasticity. Being primarily a belowground challenge,
                      tolerance to soil compaction needs to be associated with
                      root phenotype and plasticity. It is therefore of importance
                      to distinguish between size-related apparent and
                      size-independent adaptive plasticity. We determined the
                      above- and belowground plasticity of sorghum genotypes
                      varying in overall plant size.MethodsWe quantified
                      plasticity as the degree response (adaptive and apparent
                      plasticity) to soil compaction and conducted two experiments
                      with sorghum and two soil density levels (1.4 and 1.8 Mg
                      m−3). First, we quantified the shoot biomass plasticity of
                      28 sorghum genotypes. Second, we studied the root plasticity
                      of six genotypes varying in shoot size and tolerance to soil
                      compaction.ResultsPlasticity was correlated with plant
                      biomass with larger genotypes responding earlier and more
                      intensely. Soil compaction affected roots more than shoots
                      and plasticity was expressed foremost in nodal root number
                      and fine root length. Impeded plants produced 35 and $47\%$
                      less root mass and length,
                      respectively.ConclusionsPlasticity to soil compaction varies
                      among genotypes, but less-sensitive lines are in general
                      smaller-sized genotypes. The association between tolerance
                      and plant biomass may pose challenges to crop production;
                      however, vigorous genotypes with unresponsive shoots to soil
                      compaction do exist. Maintaining shoot growth relatively
                      stable while the root modifies its structure can be an
                      important adaptation mechanism to soil compaction.},
      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},
      UT           = {WOS:000738433000001},
      doi          = {10.1007/s11104-021-05160-z},
      url          = {https://juser.fz-juelich.de/record/904865},
}