Abstract:
:Chlorophyll f is a photosynthetic pigment that was discovered in 2010. In this study, we present investigations on spectral and dynamic characteristics of singlet-excited and triplet states of Chl f with the application of ultrafast time-resolved absorption and fluorescence spectroscopies. The pigment was studied at room temperature in two organic solvents: pyridine and diethyl ether that have different characters of coordination of the chlorophyll magnesium (Mg) atom (hexa- and penta-coordination, respectively). Cryogenic measurements (77 K) were performed in 2-methyltetrahydrofuran (hexa-coordination). The singlet-excited state lifetime was measured to be 5.6 ns at room temperature regardless of Mg coordination and 8.1 ns at 77 K. The fluorescence quantum yield of Chl f was also determined in pyridine to be 0.16. The triplet state lifetime was studied in detail in pyridine at room temperature, and the inherent lifetime was estimated to ~150 μs. Selective measurements at 77 K demonstrated that the metastability of the triplet state greatly enhances, and its lifetime increases by a factor of more than three.
journal_name
Photosynth Resjournal_title
Photosynthesis researchauthors
Niedzwiedzki DM,Liu H,Chen M,Blankenship REdoi
10.1007/s11120-014-9981-zsubject
Has Abstractpub_date
2014-07-01 00:00:00pages
25-34issue
1eissn
0166-8595issn
1573-5079journal_volume
121pub_type
杂志文章abstract::Photoinhibition of Photosystem II (PSII) in lincomycin-treated leaves begins as a first-order reaction, but fluorescence measurements have suggested that after prolonged illumination, the number of active PSII centres stabilizes to 15-20% of control. The stabilization has been interpreted to indicate that photoinhibit...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-009-9496-1
更新日期:2010-01-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00046879
更新日期:1988-10-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-014-0002-z
更新日期:2014-07-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1023/B:PRES.0000036881.23512.42
更新日期:2004-01-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00014883
更新日期:1996-11-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-011-9718-1
更新日期:2012-02-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章,评审
doi:10.1007/s11120-009-9439-x
更新日期:2009-08-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章,评审
doi:10.1007/s11120-015-0094-0
更新日期:2015-08-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00054145
更新日期:1983-12-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1023/A:1025850230977
更新日期:2003-01-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1023/B:PRES.0000030439.62331.d0
更新日期:2004-01-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00047172
更新日期:1989-07-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00028842
更新日期:1988-06-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00018261
更新日期:1994-12-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00146413
更新日期:1993-11-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00032597
更新日期:1990-05-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-007-9208-7
更新日期:2007-10-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-015-0176-z
更新日期:2016-01-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00032356
更新日期:1981-09-01 00:00:00
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pub_type: 杂志文章
doi:10.1007/s11120-007-9147-3
更新日期:2007-06-01 00:00:00
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pub_type: 杂志文章
doi:10.1023/A:1010650532693
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pub_type: 杂志文章
doi:10.1007/s11120-009-9405-7
更新日期:2009-03-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章,评审
doi:10.1007/s11120-018-0498-8
更新日期:2018-08-01 00:00:00
abstract::The kinetic and spectroscopic properties of the secondary electron acceptor A1 were determined by flash absorption spectroscopy at room and cryogenic temperatures in a Photosystem I (PS I) core devoid of the iron-sulfur clusters FX, FB and FA. It was shown earlier (Warren, P.V., Golbeck, J.H. and Warden, J.T. (1993) B...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00015559
更新日期:1995-09-01 00:00:00
abstract::Modified forms of the D1 protein with deletions in lumen-exposed regions, were constructed in the cyanobacterium Synechocystis 6803 using site-directed mutagenesis. Integration and stability of the mutated D1 proteins in the thylakoid membrane were studied by immunoblot and pulse-chase analyses. It was found that in Δ...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00117663
更新日期:1996-08-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 传,历史文章,杂志文章
doi:10.1007/s11120-018-0530-z
更新日期:2018-09-01 00:00:00
abstract::The chloroplast genome of the highly neutral-lipid-producing marine pennate diatom Fistulifera sp. strain JPCC DA0580 was fully sequenced using high-throughput pyrosequencing. The general features and gene content were compared with three other complete diatom chloroplast genomes. The chloroplast genome is 134,918 bp ...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-011-9622-8
更新日期:2011-09-01 00:00:00
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journal_title:Photosynthesis research
pub_type: 杂志文章,评审
doi:10.1007/s11120-009-9501-8
更新日期:2010-04-01 00:00:00
abstract::Oxygenic photosynthesis requires chlorophyll (Chl) for the absorption of light energy, and charge separation in the reaction center of photosystem I and II, to feed electrons into the photosynthetic electron transfer chain. Chl is bound to different Chl-binding proteins assembled in the core complexes of the two photo...
journal_title:Photosynthesis research
pub_type: 杂志文章,评审
doi:10.1007/s11120-015-0154-5
更新日期:2015-12-01 00:00:00
abstract::Unique light-harvesting antennas in the green sulfur bacterium Chlorobaculum tepidum, called chlorosomes, consist of self-aggregates of bacteriochlorophyll (BChl) c. In the biosynthesis of BChl c, BciC demethoxycarbonylase removes the C132-methoxycarbonyl group to facilitate the self-aggregation of BChl c. We previous...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-018-0573-1
更新日期:2019-03-01 00:00:00