Kinetic models of photosystem II should accommodate the effect of donor side quenching on variable chlorophyll a fluorescence in the microseconds time

W.J. Vredenberg

Research output: Contribution to journalLetterAcademicpeer-review

2 Citations (Scopus)

Abstract

Quantitative data on laser flash-induced variable fluorescence in the 100 ns to 1 ms time range (Belyaeva et al. in Photosynth Res 98:105–119, 2008) confirming those of others (Steffen et al. in Biochemistry 40:173–180, 2001, Biochemistry 44:3123–3132, 2005; Belyaeva et al. in Biophysics 51(6):976–990, 2006), need a substantial correction with respect to magnitude of the normalized variable fluorescence associated with single turnover-induced charge separation in RCs of PS II. Their data are conclusive with the involvement of donor side quenching, the release of which occurs with a rate constant in the range of tens of ms-1, and presumed to be associated with reduction of YZ+ by the OEC
Original languageEnglish
Pages (from-to)99-101
JournalPhotosynthesis Research
Volume102
DOIs
Publication statusPublished - 2009

Keywords

  • single turnover flash
  • yield
  • chloroplasts
  • transients
  • pattern
  • cells

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