Kinetics of light-induced redox transients of photosystem I reaction center P700 in leaves of C3 and C4 plants

E. A. Vishnyakova, B. V. Trubitsyn, A. N. Tikhonov

Research output: Contribution to journalArticle

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 languageEnglish
Pages (from-to)903-904
Number of pages2
JournalBiofizika
Volume45
Issue number5
Publication statusPublished - 2000
Externally publishedYes

Fingerprint

Photosystem I Protein Complex
Oxidation-Reduction
Lighting
Light
Dark Adaptation
Photosynthesis
Zea mays
Enzymes

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 journalArticle

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