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@ARTICLE{Muller:151639,
      author       = {Muller, Onno and Cohu, Ch. M. and Stewart, J. J. and
                      Protheroe, J. A. and Demmig-Adams, B. and Adams, W. W.},
      title        = {{A}ssociation between photosynthesis and contrasting
                      features of minor veins in leaves of summer annuals loading
                      phloem via symplastic versus apoplastic routes},
      journal      = {Physiologia plantarum},
      volume       = {152},
      number       = {1},
      issn         = {0031-9317},
      address      = {Oxford [u.a.]},
      publisher    = {Wiley-Blackwell},
      reportid     = {FZJ-2014-01530},
      pages        = {174–183},
      year         = {2014},
      abstract     = {Foliar vascular anatomy and photosynthesis were evaluated
                      for a number of summer annual species that either load
                      sugars into the phloem via a symplastic route (Cucumis
                      sativus L. cv. Straight Eight; Cucurbita pepo L. cv. Italian
                      Zucchini Romanesco; Citrullus lanatus L. cv. Faerie Hybrid;
                      Cucurbita pepo L. cv. Autumn Gold) or an apoplastic route
                      (Nicotiana tabacum L.; Solanum lycopersicum L. cv.
                      Brandywine; Gossypium hirsutum L.; Helianthus annuus L. cv.
                      Soraya), as well as winter annual apoplastic loaders
                      (Spinacia oleracea L. cv. Giant Nobel; Arabidopsis thaliana
                      (L.) Heynhold Col-0, Swedish and Italian ecotypes). For all
                      summer annuals, minor vein cross-sectional xylem area and
                      tracheid number as well as the ratio of phloem loading cells
                      to phloem sieve elements, each when normalized for foliar
                      vein density (VD), was correlated with photosynthesis. These
                      links presumably reflect (1) the xylem's role in providing
                      water to meet foliar transpirational demand supporting
                      photosynthesis and (2) the importance of the driving force
                      of phloem loading as well as the cross-sectional area for
                      phloem sap flux to match foliar photosynthate production.
                      While photosynthesis correlated with the product of VD and
                      cross-sectional phloem cell area among symplastic loaders,
                      photosynthesis correlated with the product of VD and phloem
                      cell number per vein among summer annual apoplastic loaders.
                      Phloem cell size has thus apparently been a target of
                      selection among symplastic loaders (where loading depends on
                      enzyme concentration within loading cells) versus phloem
                      cell number among apoplastic loaders (where loading depends
                      on membrane transporter numbers).},
      cin          = {IBG-2},
      ddc          = {580},
      cid          = {I:(DE-Juel1)IBG-2-20101118},
      pnm          = {89582 - Plant Science (POF2-89582)},
      pid          = {G:(DE-HGF)POF2-89582},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:000340682100014},
      doi          = {10.1111/ppl.12155},
      url          = {https://juser.fz-juelich.de/record/151639},
}