Thermoluminescence properties of the isolated photosystem two reaction centre

Imre Vass, David J. Chapman, James Barber

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Formation of thermoluminescence signals is characteristics of energy- and charge storage in Photosystem II. In isolated D1/D2/cytochrome b-559 Photosystem II reaction centre preparation four thermoluminescence components were found. These appear at -180 (Z band), between -80 and -50 (Zv band), at -30 and at +35°C. The Z band arises from pigment molecules but not correlated with photosynthetic activity. The Zv and -30°C bands arise from the recombination of charge pairs stabilized in the Photosystem II reaction centre complex. The +35°C band probably corresponds to the artefact glow peak resulting from a pigment-protein-detergent interaction in subchloroplast preparations (Rózsa Zs, Droppa M and Horváth G (1989) Biochim Biophys Acta 973, 350-353).

Original languageEnglish
Pages (from-to)295-301
Number of pages7
JournalPhotosynthesis research
Volume22
Issue number3
DOIs
Publication statusPublished - Dec 1 1989

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Keywords

  • D1/D2/cytochrome b-599
  • Photosystem II
  • charge recombination
  • thermoluminescence

ASJC Scopus subject areas

  • Biochemistry
  • Plant Science
  • Cell Biology

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