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@ARTICLE{MartnRobles:864046,
      author       = {Martín‐Robles, Nieves and Morente‐López, Javier and
                      Freschet, Grégoire T. and Poorter, Hendrik and Roumet,
                      Catherine and Milla, Rubén},
      title        = {{R}oot traits of herbaceous crops: {P}re‐adaptation to
                      cultivation or evolution under domestication?},
      journal      = {Functional ecology},
      volume       = {33},
      number       = {2},
      issn         = {1365-2435},
      address      = {Oxford [u.a.]},
      publisher    = {Wiley-Blackwell},
      reportid     = {FZJ-2019-03961},
      pages        = {273 - 285},
      year         = {2019},
      abstract     = {Agricultural fields are commonly characterized by high
                      nutrient and water availabilities, which are favourable for
                      plant growth. Such conditions might promote the evolution of
                      resource‐acquisitive strategies. We asked whether crop
                      plants show root traits typical of resource‐acquisitive
                      strategies and whether this strategy is primarily a result
                      of their evolution under domestication or of the early
                      selection of successful candidates for domestication.We
                      studied a set of 30 crop species and their wild progenitors.
                      We set up a greenhouse experiment to measure five root
                      traits: root thickness, root tissue density, specific root
                      length (SRL), root mass fraction (RMF) and root length
                      ratio. In addition, we compiled data from other wild
                      herbaceous species, growth in similar conditions to this
                      experiment, to place the root traits of our crops in the
                      context of wider botanical variation.Wild progenitors had
                      thicker and less dense roots, with higher RMF and lower SRL,
                      than other wild herbs. Thicker and less dense roots are
                      indicative of fertile soils, which suggest that wild
                      progenitors could have been adapted for success in
                      agricultural conditions. Additionally, we found that
                      domestication generally increased total plant dry mass, but
                      none of the root traits evolved consistently towards a more
                      resource‐acquisitive strategy after domestication across
                      all species. Root trait values differed between progenitors
                      and crop species for most pairs surveyed, but this occurred
                      in diverse directions depending on crop species. Such
                      differences were independent of phylogeny, functional group
                      or variability in the domestication processes, such as
                      timing of the domestication event or organ under focal
                      artificial selection.Our comparative study revealed that the
                      root phenotype exhibited by wild progenitors (thick roots
                      with low density and SRL), when compared with other wild
                      herbs, was in accordance with plants typical of fertile
                      habitats. However, none of the root traits reacted to
                      domestication in accordance with evolution towards faster
                      growth strategies. Thus, the adaptation of crop root
                      phenotypes to the fertile conditions of agricultural fields
                      might be largely determined by early choices of wild
                      species, rather than by further evolution under
                      domestication},
      cin          = {IBG-2},
      ddc          = {570},
      cid          = {I:(DE-Juel1)IBG-2-20101118},
      pnm          = {582 - Plant Science (POF3-582)},
      pid          = {G:(DE-HGF)POF3-582},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000458830500007},
      doi          = {10.1111/1365-2435.13231},
      url          = {https://juser.fz-juelich.de/record/864046},
}