Contribution of ΔpH and ΔE to photosynthesis of Chlamydomonas reinhardtii

Title:

Contribution of ΔpH and ΔE to photosynthesis of Chlamydomonas reinhardtii

Creator:

Tang, Qing-Xiu and Wei, Jia-Mian

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:d836e157-fab4-4ec4-be46-7cd514d1c185
uuid:d836e157-fab4-4ec4-be46-7cd514d1c185
issn:0300-3604
doi:10.1023/A:1012416607636

Subject:

proton motive force, millisecond delayed light emission, nigericin, and valinomycin

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

The contribution of two components (ΔpH and ΔE) of the proton motive force to photosynthesis of C. reinhardtii was studied. Valinomycin, a photophosphorylation uncoupler, decreased significantly the fast phase (related mainly to the membrane electric potential) of millisecond delayed light emission (ms-DLE) of C. reinhardtii. Nigericin, another photophosphorylation uncoupler, decreased the slow phase (related mainly to the proton gradient) and partly also the fast phase of ms-DLE. Both valinomycin and nigericin decreased the net ATP content and photosynthetic rate of C. reinhardtii, but the inhibition by nigericin was stronger than that by valinomycin. Hence both components of the proton motive force contribute to photosynthesis and although the contribution of ΔpH is larger than that of ΔE, the latter is not negligible in photosynthesis of C. reinhardtii. and Qing-Xiu Tang, Jia-Mian Wei.

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

127-129

Source:

Photosynthetica | 2001 Volume:39 | Number:1

Harvested from:

CDK

Metadata only:

false