Chlorophyll triplet states associated with Photosystem I and Photosystem II in thylakoids of the green alga Chlamydomonas reinhardtii (Articolo in rivista)

Type
Label
  • Chlorophyll triplet states associated with Photosystem I and Photosystem II in thylakoids of the green alga Chlamydomonas reinhardtii (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.bbabio.2006.10.007 (literal)
Alternative label
  • Santabarbara S.; G. Agostini; A. P. Casazza; C. D. Syme; P. Heathcote; F. Bohles; M. C. Evans; R. C. Jennings; D. Carbonera. (2007)
    Chlorophyll triplet states associated with Photosystem I and Photosystem II in thylakoids of the green alga Chlamydomonas reinhardtii
    in Biochimica et biophysica acta. Bioenergetics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Santabarbara S.; G. Agostini; A. P. Casazza; C. D. Syme; P. Heathcote; F. Bohles; M. C. Evans; R. C. Jennings; D. Carbonera. (literal)
Pagina inizio
  • 88 (literal)
Pagina fine
  • 105 (literal)
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  • 1767 (literal)
Rivista
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  • 1 (literal)
Note
  • ISI Web of Science (WOS) (literal)
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  • Univ London, Sch Biol & Chem Sci, London E1 4NS, England Ctr Fundamental Res Photosynth, London NW4 4AX, England UCL, Dept Biol, London WC1E 6BT, England CNR, Ist Chim Biomol, Sez Padova, I-35131 Padua, Italy Univ Milan, Dipartimento Biol, CNR, Inst Biofis,Sez Milano, I-20133 Milan, Italy Univ Padua, Dipartimento Sci Chim, I-35131 Padua, Italy (literal)
Titolo
  • Chlorophyll triplet states associated with Photosystem I and Photosystem II in thylakoids of the green alga Chlamydomonas reinhardtii (literal)
Abstract
  • The analysis of FDMR spectra, recorded at multiple emission wavelengths, by a global decomposition technique, has allowed us to characterise the triplet populations associated with Photosystem I and Photosystem II of thylakoids in the green alga Chlamydomonas reinhardtii. Three triplet populations are observed at fluorescence emissions characteristic of Photosystem II, and their zero field splitting parameters have been determined. These are similar to the zero field parameters for the three Photosystem II triplets previously reported for spinach thylakoids, suggesting that they have a widespread occurrence in nature. None of these triplets have the zero field splitting parameters characteristic of the Photosystem II recombination triplet observed only under reducing conditions. Because these triplets are generated under non-reducing redox conditions, when the recombination triplet is undetectable, it is suggested that they may be involved in the photoinhibition of Photosystem II. At emission wavelengths characteristic of Photosystem I, three triplet populations are observed, two of which are attributed to the P(700) recombination triplet frozen in two different conformations, based on the microwave-induced fluorescence emission spectra and the triplet minus singlet difference spectra. The third triplet population detected at Photosystem I emission wavelengths, which was previously unresolved, is proposed to originate from the antenna chlorophyll of the core or the unusually blue-shifted outer antenna complexes of this organism. (literal)
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