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 journalArticlepeer-review

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 - Jan 1 2000
Externally publishedYes

Keywords

  • Chloroplasts
  • EPR
  • Electron transport control

ASJC Scopus subject areas

  • Medicine(all)

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