Kinetics of in vivo bacteriochlorophyll fluorescence yield and the state of photosynthetic apparatus of purple bacteria
Language English Country Netherlands Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
- MeSH
- Bacteriochlorophylls metabolism MeSH
- Fluorescence MeSH
- Photosynthesis physiology MeSH
- Kinetics MeSH
- Membrane Potentials physiology MeSH
- Rhodobacter sphaeroides metabolism physiology radiation effects MeSH
- Light MeSH
- Electron Transport MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Names of Substances
- Bacteriochlorophylls MeSH
The light-induced electron transport in purple bacterium Rhodobacter sphaeroides was studied in vivo by means of kinetic difference absorption spectroscopy and kinetics of bacteriochlorophyll fluorescence yield. Measurements of redox state of the oxidised primary donor and cytochrome c and the membrane potential revealed a complex pattern of changes of the electron flow. Effects of the membrane potential on the fluorescence yield were also analysed, and a model for the fluorescence induction curve is presented. The data indicate substantial positive effect of the membrane potential on the fluorescence emission in vivo. Moreover, light-induced changes in light scattering were observed, which suggests occurrence of structural changes on the level of the photosynthetic membrane.
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Biochim Biophys Acta. 2005 Feb 17;1706(3):204-14 PubMed
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FEBS Lett. 1994 Oct 17;353(2):189-93 PubMed
Appl Environ Microbiol. 1978 Jan;35(1):38-44 PubMed
Photosynth Res. 2006 Jun;88(3):351-6 PubMed
EMBO J. 1999 Feb 1;18(3):534-42 PubMed
Bioelectrochemistry. 2002 Sep;57(2):123-8 PubMed
Photosynth Res. 2002;73(1-3):73-81 PubMed
Biochim Biophys Acta. 1977 Nov 17;462(2):237-46 PubMed
Arch Microbiol. 1985 May;141(4):290-6 PubMed
Science. 2001 Jun 29;292(5526):2492-5 PubMed
Biochim Biophys Acta. 2002 Apr 22;1554(1-2):94-100 PubMed
Biochim Biophys Acta. 1972;283(1):54-66 PubMed
Biophys J. 2000 Jul;79(1):26-38 PubMed
J Gen Microbiol. 1962 Sep;28:607-16 PubMed
Bioelectrochemistry. 2003 Aug;60(1-2):87-95 PubMed
J Bacteriol. 2008 Jul;190(14):4912-21 PubMed
FEBS Lett. 1969 Aug;4(3):185-189 PubMed
Photosynth Res. 1996 Feb;47(2):175-85 PubMed
Biochim Biophys Acta. 1999 Jun 30;1412(2):149-72 PubMed
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