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 - 2000 |
| Externally published | Yes |
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Keywords
- Chloroplasts
- Electron transport control
- EPR
ASJC Scopus subject areas
- Biophysics
Cite this
Kinetics of light-induced redox transients of photosystem I reaction center P700 in leaves of C3 and C4 plants. / Vishnyakova, E. A.; Trubitsyn, B. V.; Tikhonov, A. N.
In: Biofizika, Vol. 45, No. 5, 2000, p. 903-904.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Kinetics of light-induced redox transients of photosystem I reaction center P700 in leaves of C3 and C4 plants
AU - Vishnyakova, E. A.
AU - Trubitsyn, B. V.
AU - Tikhonov, A. N.
PY - 2000
Y1 - 2000
N2 - 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.
AB - 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.
KW - Chloroplasts
KW - Electron transport control
KW - EPR
UR - http://www.scopus.com/inward/record.url?scp=0040524396&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0040524396&partnerID=8YFLogxK
M3 - Article
VL - 45
SP - 903
EP - 904
JO - Biofizika
JF - Biofizika
SN - 0006-3029
IS - 5
ER -