Abstract
The light-induced changes in the kinetics of the oxidation of photosystem I reaction center P700 in leaves of C3 and C4 plants, depending on the time of leaf adaptation to dark before the illumination were studied. The EPR 1 signal from oxidized centers P+700 was used to monitor the kinetics of P700 redox transients. Similar dependences of the light-induced changes in the kinetics of P700 versus the adaptation time were observed in leaves of three kinds of plants: bean, orange and maize. These data suggest that the deactivation of the Calvin cycle enzymes, which occurs 1-3 min after ceasing the illumination, is the main factor that causes the retardation of the light-induced oxidation of P700.
Original language | English |
---|---|
Pages (from-to) | 903-904 |
Number of pages | 2 |
Journal | Biofizika |
Volume | 45 |
Issue number | 5 |
Publication status | Published - Jan 1 2000 |
Externally published | Yes |
Keywords
- Chloroplasts
- EPR
- Electron transport control
ASJC Scopus subject areas
- Medicine(all)