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@ARTICLE{Matsubara:41136,
      author       = {Matsubara, S. and Chow, W. S.},
      title        = {{P}opulations of photoinactivated photosystem {II} reaction
                      ceners characterized by chlorophyll a fluorescence lifetime
                      in vivo},
      journal      = {Proceedings of the National Academy of Sciences of the
                      United States of America},
      volume       = {101},
      issn         = {0027-8424},
      address      = {Washington, DC},
      publisher    = {Academy},
      reportid     = {PreJuSER-41136},
      pages        = {18234 - 18239},
      year         = {2004},
      note         = {Record converted from VDB: 12.11.2012},
      abstract     = {Photosystem (PS) II centers, which split water into oxygen,
                      protons, and electrons during photosynthesis, require light
                      but are paradoxically inactivated by it. Prolonged light
                      exposure concomitantly decreased both the functional
                      fraction of PSII reaction centers and the integral PSII
                      chlorophyll (Chl) a fluorescence lifetime in leaf segments
                      of Capsicum annuum L. Acceleration of photoinactivation of
                      PSII by a pretreatment with the inhibitors/uncoupler
                      lincomycin, DTT, or nigericin further reduced PSII Chl a
                      fluorescence lifetimes. A global analysis of fluorescence
                      lifetime distributions revealed the presence of at least two
                      distinct populations of photoinactivated PSII centers, one
                      at 1.25 ns, and the other at 0.58 ns. Light treatment first
                      increased the 1.25-ns component, a weak quencher, at the
                      expense of a component at 2.22 ns corresponding to
                      functional PSII centers. The 0.58-ns component, a strong
                      quencher, emerged later than the 1.25-ns component. The
                      strongly quenching PSII reaction centers could serve to
                      avoid further damage to themselves and protect their
                      functional neighbors by acting as strong energy sinks.},
      keywords     = {Anti-Bacterial Agents: pharmacology / Capsicum: metabolism
                      / Chlorophyll: chemistry / Dithiothreitol: pharmacology /
                      Light / Light-Harvesting Protein Complexes: chemistry /
                      Lincomycin: pharmacology / Microscopy, Fluorescence: methods
                      / Models, Biological / Nigericin: pharmacology / Oxygen:
                      metabolism / Photons / Photosynthesis / Photosynthetic
                      Reaction Center Complex Proteins: chemistry / Photosystem II
                      Protein Complex: chemistry / Protons / Temperature / Time
                      Factors / Xanthophylls: metabolism / Anti-Bacterial Agents
                      (NLM Chemicals) / Light-Harvesting Protein Complexes (NLM
                      Chemicals) / Photosynthetic Reaction Center Complex Proteins
                      (NLM Chemicals) / Photosystem II Protein Complex (NLM
                      Chemicals) / Protons (NLM Chemicals) / Xanthophylls (NLM
                      Chemicals) / Chlorophyll (NLM Chemicals) / Lincomycin (NLM
                      Chemicals) / Nigericin (NLM Chemicals) / Dithiothreitol (NLM
                      Chemicals) / chlorophyll a (NLM Chemicals) / Oxygen (NLM
                      Chemicals) / J (WoSType)},
      cin          = {ICG-III},
      ddc          = {000},
      cid          = {I:(DE-Juel1)VDB49},
      pnm          = {Chemie und Dynamik der Geo-Biosphäre},
      pid          = {G:(DE-Juel1)FUEK257},
      shelfmark    = {Multidisciplinary Sciences},
      typ          = {PUB:(DE-HGF)16},
      pubmed       = {pmid:15601775},
      pmc          = {pmc:PMC539729},
      UT           = {WOS:000226102700063},
      doi          = {10.1073/pnas.0403857102},
      url          = {https://juser.fz-juelich.de/record/41136},
}