The thermoluminescence and delayed luminescence characteristics of PS I I „ and PS I I p centers were investigated in BBY particles and stroma thylakoids, respectively. The BBY particles exhibited a thermoluminescence band at 25 °C (B band) which was associated with the charge recombination of the S 2Qb" redox couple and underwent period-2 oscillation in a sequence of flashes. In the flash-induced decay of delayed luminescence of BBY particles a component with a half-time of 34 s corresponded to the B thermoluminescence band and was also assigned to S2OB charge recombination. No corresponding thermoluminescence or delayed luminescence components associated with the secondary acceptor OB could be observed in the glow curve or delayed luminescence decay of stroma thylakoids. These observations indicate that unlike PS I I a the PS Hp centers are not associated with the two-electron gate, QB.
|Number of pages||5|
|Journal||Zeitschrift fur naturforschung - section c journal of biosciences|
|Publication status||Published - Aug 1 1988|
- Delayed Luminescence
- Photosystem II
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)