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@ARTICLE{Keller:873516,
      author       = {Keller, Beat and Matsubara, Shizue and Rascher, Uwe and
                      Pieruschka, Roland and Steier, Angelina and Kraska, Thorsten
                      and Muller, Onno},
      title        = {{G}enotype {S}pecific {P}hotosynthesis x {E}nvironment
                      {I}nteractions {C}aptured by {A}utomated {F}luorescence
                      {C}anopy {S}cans {O}ver {T}wo {F}luctuating {G}rowing
                      {S}easons},
      journal      = {Frontiers in plant science},
      volume       = {10},
      issn         = {1664-462X},
      address      = {Lausanne},
      publisher    = {Frontiers Media},
      reportid     = {FZJ-2020-00785},
      pages        = {1482},
      year         = {2019},
      abstract     = {Photosynthesis reacts dynamic and in different time scales
                      to changing conditions. Light and temperature acclimation
                      balance photosynthetic processes in a complex interplay with
                      the fluctuating environment. However, due to limitations in
                      the measurements techniques, these acclimations are often
                      described under steady-state conditions leading to
                      inaccurate photosynthesis estimates in the field. Here we
                      analyze the photosynthetic interaction with the fluctuating
                      environment and canopy architecture over two seasons using a
                      fully automated phenotyping system. We acquired over 700,000
                      chlorophyll fluorescence transients and spectral
                      measurements under semi-field conditions in four crop
                      species including 28 genotypes. As expected, the quantum
                      efficiency of the photosystem II (Fv/Fm in the dark and
                      Fq'/Fm' in the light) was determined by light intensity. It
                      was further significantly affected by spectral indices
                      representing canopy structure effects. In contrast, a newly
                      established parameter, monitoring the efficiency of electron
                      transport (Fr2/Fv in the dark respective Fr2'/Fq' in the
                      light), was highly responsive to temperature (R2 up to
                      0.75). This parameter decreased with temperature and enabled
                      the detection of cold tolerant species and genotypes. We
                      demonstrated the ability to capture and model the dynamic
                      photosynthesis response to the environment over entire
                      growth seasons. The improved linkage of photosynthetic
                      performance to canopy structure, temperature and cold
                      tolerance offers great potential for plant breeding and crop
                      growth modeling},
      cin          = {IBG-2},
      ddc          = {570},
      cid          = {I:(DE-Juel1)IBG-2-20101118},
      pnm          = {582 - Plant Science (POF3-582) / DPPN - Deutsches Pflanzen
                      Phänotypisierungsnetzwerk (BMBF-031A053A)},
      pid          = {G:(DE-HGF)POF3-582 / G:(DE-Juel1)BMBF-031A053A},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:31998328},
      UT           = {WOS:000508950900001},
      doi          = {10.3389/fpls.2019.01482},
      url          = {https://juser.fz-juelich.de/record/873516},
}