Antal 2013 Planta

Antal TK, Kukarskikh GP, Bulychev AA, Tyystjärvi E, Krendeleva T (2013) Antimycin A effect on the electron transport in chloroplasts of two Chlamydomonas reinhardtii strains. Planta 237:1241-1250.

» PMID:23354456

Antal Taras K, Kukarskikh Galina P, Bulychev Alexander A, Tyystjärvi Esa, Krendeleva Tatyana (2013) Planta

Abstract: The effects of antimycin A on the redox state of plastoquinone and on electron donation to photosystem I (PS I) were studied in sulfur-deprived Chlamydomonas reinhardtii cells of the strains cc406 and 137c. We found that this reagent suppresses cyclic electron flow around PS I in the cc406 strain, whereas this inhibitory effect was completely absent in the 137c strain. In the latter strain, antimycin A induced rapid reduction of plastoquinone in the dark and considerably enhanced the rate of electron donation to P700 (+) in the dark. Importantly, neither myxothiazol, an inhibitor of mitochondrial respiration, FCCP, a protonophore, nor propyl gallate, an inhibitor of the plastid terminal oxidase, induced such a strong effect like antimycin A. The results indicate that in the chloroplast of the 137c strain, antimycin A has a site of action outside of the machinery of cyclic electron flow.

Labels:

Organism: Algae 

Photosynthesis, MitoFit 2021 Dark respiration 

Cited by

• Huete-Ortega et al (2021) Substrate-uncoupler-inhibitor-titration protocols for dark respiration in Chlamydomonas reinhardtii. MitoFit Preprints 2021 (in prep).