The Kinetics of Photosystem 2 Photoinactivation in Whole Cells, Thylakoids and PS2 Particles of a Thermophilic Blue Green Alga Synechococcus Elongatus

  • Ivan Šetlík
  • Ladislav Nedbal
  • Eva Šetlíková
  • DanuŠE Sofrová
  • Jiří Masojídek

Abstract

Photosystem 2 photoinactivation (PS2PIA) is characterized by a selective and roughly parallel decline of PS2 electron transport activity and of the variable component of PS2 fluorescence (Fv). It is an important component of photoinhibition, i.e. injury to photosynthetic apparatus induced by very high irradiances (see (1) for review). In isolated thylakoids and in chloramphenicol treated photosynthesizing cells PS2PIA can be observed down to irradiances around and below saturation (2, 3, 4). This suggests that it accompanies photochemistry of photosynthesis and under normal conditions its consequencies become repaired by proteosynthe sis on 70S ribosomes.

Keywords

Oxygen Removal Synechococcus Elongatus Aerobic Condi Tions Thermophilic Blue Green Alga Ance Dependence 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 1987

Authors and Affiliations

  • Ivan Šetlík
    • 1
  • Ladislav Nedbal
    • 1
  • Eva Šetlíková
    • 1
  • DanuŠE Sofrová
    • 1
    • 2
  • Jiří Masojídek
    • 1
  1. 1.Institute of MicrobiologyCzechoslovak Academy of SciencesTřeboňCzechoslovakia
  2. 2.Department of Biochemistry, Faculty of SciencesCharles UniversityPrahaCzechoslovakia

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