Effect of CO2 on the energization of thylakoids in leaves of higher plants

G. Garab, A. A Sanchez Burgos, L. Zimányi, Á Faludi-Dániel

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

We investigated the effect of CO2 on the flash-induced electrochromic absorbance change of chloroplasts in leaves of higher plants. In leaves depleted of CO2 the initial electrochromic rise was followed by a fast (t 1 2 10-20 ms) and a slow (100-200 ms) decay. These kinetic components could be correlated with a dissipative and an ATP-synthetizing current, respectively. In leaves supplied with CO2 an additional slow electrochromic rise (5-10 ms) appeared in the absorbance change. This component could be tentatively correlated with the enhancement of the electron transport by CO2 between the two photosystems. In leaves supplied with CO2 the decay could be fitted with a single exponential with a t 1 2 ≈200 ms. We conclude that both energization and ATP-synthesis are strongly regulated by CO2 in chloroplasts in situ.

Original languageEnglish
Pages (from-to)323-327
Number of pages5
JournalFEBS Letters
Volume154
Issue number2
DOIs
Publication statusPublished - Apr 18 1983

Fingerprint

Thylakoids
Plant Leaves
Chloroplasts
Adenosine Triphosphate
Electron Transport
Kinetics

Keywords

  • Chloroplast
  • CO
  • Electrochromism
  • Energization
  • Photosynthesis

ASJC Scopus subject areas

  • Biochemistry
  • Biophysics
  • Molecular Biology

Cite this

Effect of CO2 on the energization of thylakoids in leaves of higher plants. / Garab, G.; Burgos, A. A Sanchez; Zimányi, L.; Faludi-Dániel, Á.

In: FEBS Letters, Vol. 154, No. 2, 18.04.1983, p. 323-327.

Research output: Contribution to journalArticle

Garab, G. ; Burgos, A. A Sanchez ; Zimányi, L. ; Faludi-Dániel, Á. / Effect of CO2 on the energization of thylakoids in leaves of higher plants. In: FEBS Letters. 1983 ; Vol. 154, No. 2. pp. 323-327.
@article{3f2fd1a5e2ab43aa9e6ad3bfcbe44624,
title = "Effect of CO2 on the energization of thylakoids in leaves of higher plants",
abstract = "We investigated the effect of CO2 on the flash-induced electrochromic absorbance change of chloroplasts in leaves of higher plants. In leaves depleted of CO2 the initial electrochromic rise was followed by a fast (t 1 2 10-20 ms) and a slow (100-200 ms) decay. These kinetic components could be correlated with a dissipative and an ATP-synthetizing current, respectively. In leaves supplied with CO2 an additional slow electrochromic rise (5-10 ms) appeared in the absorbance change. This component could be tentatively correlated with the enhancement of the electron transport by CO2 between the two photosystems. In leaves supplied with CO2 the decay could be fitted with a single exponential with a t 1 2 ≈200 ms. We conclude that both energization and ATP-synthesis are strongly regulated by CO2 in chloroplasts in situ.",
keywords = "Chloroplast, CO, Electrochromism, Energization, Photosynthesis",
author = "G. Garab and Burgos, {A. A Sanchez} and L. Zim{\'a}nyi and {\'A} Faludi-D{\'a}niel",
year = "1983",
month = "4",
day = "18",
doi = "10.1016/0014-5793(83)80175-6",
language = "English",
volume = "154",
pages = "323--327",
journal = "FEBS Letters",
issn = "0014-5793",
publisher = "Elsevier",
number = "2",

}

TY - JOUR

T1 - Effect of CO2 on the energization of thylakoids in leaves of higher plants

AU - Garab, G.

AU - Burgos, A. A Sanchez

AU - Zimányi, L.

AU - Faludi-Dániel, Á

PY - 1983/4/18

Y1 - 1983/4/18

N2 - We investigated the effect of CO2 on the flash-induced electrochromic absorbance change of chloroplasts in leaves of higher plants. In leaves depleted of CO2 the initial electrochromic rise was followed by a fast (t 1 2 10-20 ms) and a slow (100-200 ms) decay. These kinetic components could be correlated with a dissipative and an ATP-synthetizing current, respectively. In leaves supplied with CO2 an additional slow electrochromic rise (5-10 ms) appeared in the absorbance change. This component could be tentatively correlated with the enhancement of the electron transport by CO2 between the two photosystems. In leaves supplied with CO2 the decay could be fitted with a single exponential with a t 1 2 ≈200 ms. We conclude that both energization and ATP-synthesis are strongly regulated by CO2 in chloroplasts in situ.

AB - We investigated the effect of CO2 on the flash-induced electrochromic absorbance change of chloroplasts in leaves of higher plants. In leaves depleted of CO2 the initial electrochromic rise was followed by a fast (t 1 2 10-20 ms) and a slow (100-200 ms) decay. These kinetic components could be correlated with a dissipative and an ATP-synthetizing current, respectively. In leaves supplied with CO2 an additional slow electrochromic rise (5-10 ms) appeared in the absorbance change. This component could be tentatively correlated with the enhancement of the electron transport by CO2 between the two photosystems. In leaves supplied with CO2 the decay could be fitted with a single exponential with a t 1 2 ≈200 ms. We conclude that both energization and ATP-synthesis are strongly regulated by CO2 in chloroplasts in situ.

KW - Chloroplast

KW - CO

KW - Electrochromism

KW - Energization

KW - Photosynthesis

UR - http://www.scopus.com/inward/record.url?scp=0011203238&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0011203238&partnerID=8YFLogxK

U2 - 10.1016/0014-5793(83)80175-6

DO - 10.1016/0014-5793(83)80175-6

M3 - Article

AN - SCOPUS:0011203238

VL - 154

SP - 323

EP - 327

JO - FEBS Letters

JF - FEBS Letters

SN - 0014-5793

IS - 2

ER -