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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Akimoto, Seiji Yokono, Makio Yokono, Erina Aikawa, Shimpei Kondo, Akihiko |
| Description | Author Affiliation: Akimoto S ( Molecular Photoscience Research Center, Kobe University, Kobe 657-8501, Japan); Yokono M ( Institute of Low Temperature Science, Hokkaido University, Sapporo 060-0819, Japan.); Yokono E ( Sapporo, Japan.); Aikawa S ( Japan Science and Technology Agency, CREST, Kobe 657-8501, Japan); Kondo A ( Japan Science and Technology Agency, CREST, Kobe 657-8501, Japan) |
| Abstract | In photosynthetic organisms, the interactions among pigment-protein complexes change in response to light conditions. In the present study, we analyzed the transfer of excitation energy from the phycobilisome (PBS) and photosystem (PS) II to PSI in the cyanobacterium Synechocystis sp. PCC 6803. After 20 min of dark adaptation, Synechocystis cells were illuminated for 5 min with strong light with different spectral profiles, blue, green, two kinds of red, and white light. After illumination, the energy-transfer characteristics were evaluated using steady-state fluorescence and picosecond time-resolved fluorescence spectroscopy techniques. The fluorescence rise and decay curves were analyzed by global analysis to obtain fluorescence decay-associated spectra, followed by spectral component analysis. Under illumination with strong light, the contribution of the energy transfer from the PSII to PSI (spillover) became greater, and that of the energy transfer from the PBS to PSI decreased; the former change was larger than the latter. The energy transfer pathway to PSI was sensitive to red light. We discuss the short-term adaptation of energy-transfer processes in Synechocystis under strong-light conditions. |
| File Format | HTM / HTML |
| ISSN | 09819428 |
| Volume Number | 81 |
| e-ISSN | 18732690 |
| Journal | Plant Physiology and Biochemistry |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2014-08-01 |
| Publisher Place | France |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Botany Discipline Biochemistry Adaptation, Physiological Radiation Effects Photosystem Ii Protein Complex Metabolism Phycobilisomes Spectrometry, Fluorescence Methods Synechocystis Physiology Electron Transport Energy Transfer Light Phycobiliproteins Time Factors Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Physiology Plant Science |
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