Studies of excitation energy transfer within the green alga Chlamydomonas reinhardtii and its mutants at 77 K

Su Lin, Robert S. Knox

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

The 77 K picosecond fluorescence of intact Chlamydomonas reinhardtii exhibits a 680-nm band (F680) that can be identified with light-harvesting chlorophyll. Analysis of the time and spectral dependence of F680 reveal a forward transfer rate of 1/(15 ps) from this 680-nm species to photosystem II. The possibility of transfer through LHC I, the light-harvesting complex closely associated with photosystem I with a transfer time of 60 to 100 ps, is indicated by analysis of similar data in the 700-720 nm region. Simple kinetic models that account for the time dependence of the emissions F707, F703 and F715 are proposed.

Original languageEnglish (US)
Pages (from-to)157-168
Number of pages12
JournalPhotosynthesis research
Volume27
Issue number3
DOIs
StatePublished - Mar 1 1991
Externally publishedYes

Keywords

  • Chlamydomonas reinhardtii
  • energy transfer
  • fluorescence
  • kenetic model
  • light-harvesting complexes (LHC)
  • mutant
  • photosystem I (PSI)
  • photosystem II (PS II)
  • picosecond

ASJC Scopus subject areas

  • Biochemistry
  • Plant Science
  • Cell Biology

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