Femtosecond Spectroscopy of Excitation Energy Transfer and Initial Charge Separation in the Reaction Center of the Photosynthetic Bacterium Rhodopseudomonas sphaeroides

1986 ◽  
pp. 393-397 ◽  
Author(s):  
J. Breton ◽  
J. L. Martin ◽  
A. Migus ◽  
A. Antonetti ◽  
A. Orszag
Keyword(s):  
Energy Transfer ◽  
Excitation Energy ◽  
Reaction Center ◽  
Charge Separation ◽  
Excitation Energy Transfer ◽  
Photosynthetic Bacterium ◽  
Femtosecond Spectroscopy ◽  
Rhodopseudomonas Sphaeroides ◽  
Initial Charge

Excitation energy transfer and charge separation in the isolated Photosystem II reaction center

1996 ◽  
Vol 48 (1-2) ◽  
pp. 83-97 ◽  
Author(s):  
Scott R. Greenfield ◽  
Michael R. Wasielewski
Keyword(s):  
Energy Transfer ◽  
Photosystem Ii ◽  
Excitation Energy ◽  
Reaction Center ◽  
Charge Separation ◽  
Excitation Energy Transfer

scholarly journals Excitation Energy Transfer and Charge Separation in Photosystem II Membranes Revisited

2006 ◽  
Vol 91 (10) ◽  
pp. 3776-3786 ◽  
Author(s):  
Koen Broess ◽  
Gediminas Trinkunas ◽  
Chantal D. van der Weij-de Wit ◽  
Jan P. Dekker ◽  
Arie van Hoek ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Photosystem Ii ◽  
Excitation Energy ◽  
Charge Separation ◽  
Excitation Energy Transfer

Excitation energy transfer and trapping dynamics in the core complex of the filamentous photosynthetic bacterium Roseiflexus castenholzii

2011 ◽  
Vol 111 (1-2) ◽  
pp. 149-156 ◽  
Author(s):  
Yueyong Xin ◽  
Jie Pan ◽  
Aaron M. Collins ◽  
Su Lin ◽  
Robert E. Blankenship
Keyword(s):  
Energy Transfer ◽  
Excitation Energy ◽  
Excitation Energy Transfer ◽  
Photosynthetic Bacterium ◽  
Core Complex ◽  
The Core

scholarly journals Exciton States in LH1 and Excitation Energy Transfer from LH1 to Reaction Center

1999 ◽  
Vol 39 (supplement) ◽  
pp. S84
Author(s):  
K. Mukai ◽  
S. Abe ◽  
H. Sumi
Keyword(s):  
Energy Transfer ◽  
Excitation Energy ◽  
Reaction Center ◽  
Excitation Energy Transfer

New Insights into the Mechanism of Uphill Excitation Energy Transfer from Core Antenna to Reaction Center in Purple Photosynthetic Bacteria

2018 ◽  
Vol 9 (12) ◽  
pp. 3278-3284 ◽  
Author(s):  
Li-Ming Tan ◽  
Jie Yu ◽  
Tomoaki Kawakami ◽  
Masayuki Kobayashi ◽  
Peng Wang ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Excitation Energy ◽  
Reaction Center ◽  
Photosynthetic Bacteria ◽  
Excitation Energy Transfer ◽  
Purple Photosynthetic Bacteria

scholarly journals Sensitivity of Antarctic freshwater algae to salt stress assessed by fast chlorophyll fluorescence transient

2013 ◽  
Vol 3 (2) ◽  
pp. 163-172 ◽  
Author(s):  
David Miguel Vilumbrales ◽  
Kateřina Skácelová ◽  
Miloš Barták
Keyword(s):  
Energy Transfer ◽  
Salt Stress ◽  
Chlorophyll Fluorescence ◽  
Electron Transport ◽  
Excitation Energy ◽  
Reaction Center ◽  
Excitation Energy Transfer ◽  
Ps Ii ◽  
Fluorescence Transient ◽  
Chlorophyll Fluorescence Transient

In this study, we investigated the effects of salt stress (2 mM NaCl) on excitation energy transfer from light harvesting complexes to photosystem II (PS II) in two Antarctic algal species: Klebsormidium sp. and Zygnema sp. Short-term salt stress led to a significant changes in the shape of chlorophyll fluorescence transient (OJIP). Analyses of the polyphasic fluorescence transients (OJIP) showed that the fluorescence yield at the phases J, I and P declined considerably with the time of exposition to salt stress. In both experimental species, OJIP transients reached lowest values of chlorophyll fluorescence signal after 30/60 min. of NaCl exposition. Then, OJIP shape and chlorophyll fluo-rescence showed species-specific recovery and rised towards original values (about 2/3 of untreated control). Analyses of chlorophyll fluorescence parameters derived from OJIPs showed that salt stress led to a decrease in the maximal efficiency of PS II photo-chemistry (FV/FM) in Zygnema sp. but not Klebsormidium sp. The results indicated that the probability of excitation energy transfer before and beyond QA, and the yield of electron transport beyond QA is limited by salt-induced stress in Zygnema sp. In addition, salt stress resulted in a decrease in the photosynthetic electron transport per PS II reaction center, but both increase and decrease in the trapping per PS II reaction center was found. Performace index (PIabs) was affected negatively in Zygnema sp. but possitively Klebsormidium sp. indicating that the latter species was more resistant to salt stress than Zygnema sp.

How Fast Is Excitation Energy Transfer in the Photosystem II Reaction Center in the Low Temperature Limit? Hole Burning vs Photon Echo

2003 ◽  
Vol 107 (12) ◽  
pp. 2862-2866 ◽  
Author(s):  
V. Zazubovich ◽  
R. Jankowiak ◽  
K. Riley ◽  
R. Picorel ◽  
M. Seibert ◽  
...  
Keyword(s):  
Energy Transfer ◽  
Low Temperature ◽  
Photosystem Ii ◽  
Excitation Energy ◽  
Reaction Center ◽  
Excitation Energy Transfer ◽  
Photon Echo ◽  
Temperature Limit ◽  
Hole Burning
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