Proton concentration in the thylakoid membranes can regulate energy distribution between the two photosystems

Title:

Proton concentration in the thylakoid membranes can regulate energy distribution between the two photosystems

Creator:

Tongra, T., Bharti, S., and Jajoo, A.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:75c77649-bc04-4d0e-ae0d-71477de01c76
uuid:75c77649-bc04-4d0e-ae0d-71477de01c76
issn:0300-3604
doi:10.1007/s11099-014-0066-1

Subject:

fotosyntéza, špenát, photosynthesis, light-harvesting complex, luminal pH, nonphotochemical quenching, oxygen consumption, oxygen evolution, spinach, 2, and 581

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

The aim of our study was to investigate the role of protons in regulating energy distribution between the two photosystems in the thylakoid membranes. Low pH-induced changes were monitored in the presence of a proton blocker, N,N′-dicyclohexylcarbodiimide (DCCD). When thylakoid membranes were suspended in a low-pH reaction mixture and incubated with DCCD, then a decrease in the fluorescence intensity of photosystem II (PSII) was observed, while no change in the intensity of photosystem I (PSI) fluorescence occurred according to the measured fluorescence emission spectra at 77 K. Since low pH induced distribution of energy from PSII to PSI was inhibited in the presence of DCCD, we concluded that pH/proton concentration of the thylakoid membranes plays an important role in regulating the distribution of the absorbed excitation energy between both photosystems., T. Tongra, S. Bharti, A. Jajoo., and Obsahuje bibliografii

Language:

Multiple languages

Rights:

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

Coverage:

636-640

Source:

Photosynthetica | 2014 Volume:52 | Number:4

Harvested from:

CDK

Metadata only:

false