Abstract：
:The light response curves of the acceptor and donor side mechanisms of photoinhibition of Photosystem II were calculated, using Arabidopsis as a model organism. Acceptor-side photoinhibition was modelled as double reduction of QA, noting that non-photochemical quenching has the same effect on the quantum yield of QA double reduction in closed PSII centres as it has on the quantum yield of electron transport in open centres. The light response curve of acceptor-side photoinhibition in Arabidopsis shows very low efficiency under low intensity light and a relatively constant quantum yield above light saturation of photosynthesis. To calculate the light response curve of donor-side photoinhibition, we built a model describing the concentration of the oxidized primary donor P680 + during steady-state photosynthesis. The model is based on literature values of rate constants of electron transfer reactions of PSII, and it was fitted with fluorescence parameters measured in the steady state. The modelling analysis showed that the quantum yield of donor-side photoinhibition peaks under moderate light. The deviation of the acceptor and donor side mechanisms from the direct proportionality between photoinhibition and photon flux density suggests that these mechanisms cannot solely account for photoinhibition in vivo, but contribution of a reaction whose quantum yield is independent of light intensity is needed. Furthermore, a simple kinetic calculation suggests that the acceptor-side mechanism may not explain singlet oxygen production by photoinhibited leaves. The theoretical framework described here can be used to estimate the yields of different photoinhibition mechanisms under different wavelengths or light intensities.
journal_name
Photosynth Resjournal_title
Photosynthesis researchauthors
Tyystjärvi E,Hakala M,Sarvikas Pdoi
10.1007/s11120-004-7174-xsubject
Has Abstractpub_date
2005-06-01 00:00:00pages
21-7issue
1-3eissn
0166-8595issn
1573-5079journal_volume
84pub_type
杂志文章abstract：:The photophysical and photochemical reactions, after light absorption by a photosynthetic pigment-protein complex, are among the fastest events in biology, taking place on timescales ranging from tens of femtoseconds to a few nanoseconds. The advent of ultrafast laser systems that produce pulses with femtosecond durat...
journal_title：Photosynthesis research
pub_type： 杂志文章,评审
doi：10.1007/s11120-009-9454-y
更新日期：2009-08-01 00:00:00
abstract：:A chlorosome is an antenna complex located on the cytoplasmic side of the inner membrane in green photosynthetic bacteria that contains tens of thousands of self-assembled bacteriochlorophylls (BChls). Green bacteria are known to incorporate various esterifying alcohols at the C-17 propionate position of BChls in the ...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-014-0017-5
更新日期：2014-10-01 00:00:00
abstract：:The Mg-dechelating activity of extracts of Chenopodium album (goosefoot) was investigated using an artificial substrate, chlorophyllin a. The activity was measured spectrophotometrically by the formation of a reaction product, pheophorbin a (Mg-free chlorin), after release of the central Mg. The Mg-releasing protein w...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1023/A:1020915812770
更新日期：2002-01-01 00:00:00
abstract：:Photosystem I particles containing 30-40 chlorophyll a molecules per primary electron donor P700 were subjected to 1.5 ps low density laser flashes at 610 nm resulting in excitation of the antenna chlorophyll a molecules followed by energy transfer to P700 and subsequent oxidation of P700. Absorbance changes were moni...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00047947
更新日期：1987-01-01 00:00:00
abstract：:The biogenesis and oxygen-evolving activity of cyanobacterial Photosystem II (PSII) is dependent on a number of accessory proteins not found in the crystallised dimeric complex. These include Psb27, a small lipoprotein attached to the lumenal side of PSII, which has been assigned a role in regulating the assembly of t...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-011-9712-7
更新日期：2012-02-01 00:00:00
abstract：:We present here the life and work of Shmuel Malkin (1934-2017), an accomplished scientist and a gifted musician who touched the lives of many around the world. His early scientific work addressed the dynamics of light harvesting and electron transport in photosynthesis. Later, he used photoacoustic and photothermal me...
journal_title：Photosynthesis research
pub_type： 传,历史文章,杂志文章
doi：10.1007/s11120-018-0478-z
更新日期：2018-07-01 00:00:00
abstract：:The absorption spectra of two light harvesting complexes from higher plants, CP29 and LHC II, have been analysed in the Soret region in order to obtain a description in terms of the absorption spectra of the individual pigments. This information is of great practical use when applying spectroscopic techniques to the s...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1023/A:1006455230379
更新日期：2000-01-01 00:00:00
abstract：:Induction of chlorophyll a fluorescence and photosynthesis as affected by temperature were measured in cucumber leaf discs. Abrupt changes of the maximal variable fluorescence, Fv(p), and photosynthesis were observed around 9° and 21°C when the temperature was decreased from 30° to 0°C. The temperature-dependent maxim...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00035259
更新日期：1988-02-01 00:00:00
abstract：:Almost 1 year has passed since the death of Wolfgang Haehnel on 13.5.2013, after a long fight against cancer. With his death, the photosynthesis community has lost an excellent scientist, a critical peer, and a stimulating sparring partner in discussions: I also lost a good friend. ...
journal_title：Photosynthesis research
pub_type： 传,历史文章
doi：10.1007/s11120-014-9999-2
更新日期：2014-06-01 00:00:00
abstract：:Rubisco (ribulose-1,5-bisphosphate carboxylase/oxygenase) catalyzes carboxylation of ribulose-1,5-bisphosphate, the first in a series of reactions leading to the incorporation of atmospheric CO₂ into biomass. Rubisco requires Rubisco activase (RCA), an AAA+ ATPase that reactivates Rubisco by remodelling the conformati...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-013-9964-5
更新日期：2014-03-01 00:00:00
abstract：:Most chloroplasts undergo changes in composition, function and structure in response to growth irradiance. However, Tradescantia albiflora, a facultative shade plant, is unable to modulate its light-harvesting components and has the same Chl a/Chl b ratios and number of functional PS II and PS I reaction centres on a ...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1023/A:1010681721929
更新日期：2001-01-01 00:00:00
abstract：:Sulphoquinovosyldiacylglycerol is a negatively charged lipid which exists in the thylakoid membrane. It is proposed that a large proportion of this acidic lipid does not form a part of the bulk lipid matrix but is closely associated with protein complexes where it is tightly bound and participates in either optimising...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00029747
更新日期：1986-01-01 00:00:00
abstract：:Tropical plants are sensitive to chilling temperatures above zero but it is still unclear whether photosystem I (PSI) or photosystem II (PSII) of tropical plants is mainly affected by chilling temperatures. In this study, the effect of 4 degrees C associated with various light densities on PSII and PSI was studied in ...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-010-9539-7
更新日期：2010-03-01 00:00:00
abstract：:Detached wheat leaves were illuminated in air until a steady rate of photosynthesis was established. Then the gas was changed to 1% O2, 99% N2 and after 2.5 h further illumination the capacity of the leaves for photosynthesis in air was decreased to approximately 50%. Measurement of RuBP carboxylase activity in extrac...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00040708
更新日期：1982-06-01 00:00:00
abstract：:Effect of chemical oxidation by ferricyanide on bacteriochlorophyll a (BChl a) in the Fenna-Matthews-Olson protein (FMO) was studied using absorbance and fluorescence spectroscopy at ambient and cryogenic temperatures. Partially selective oxidation of pigments bound to the antenna complex was achieved and the probable...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-013-9878-2
更新日期：2013-09-01 00:00:00
abstract：:The temperature dependence of the partial reactions leading to turn-over of the UQH2:cyt c 2 oxidoreductase of Rhodobacter sphaeroides have been studied. The redox properties of the cytochrome components show a weak temperature dependence over the range 280-330 K, with coefficients of about 1 m V per degree; our resul...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00114768
更新日期：1989-01-01 00:00:00
abstract：:Chlorosomes of green photosynthetic bacterium Chlorobium tepidum contain aggregates of bacteriochlorophyll c (BChl c) with carotenoids and isoprenoid quinones. BChl aggregates with very similar optical properties can be prepared also in vitro either in non-polar solvents or in aqueous buffers with addition of lipids a...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-007-9259-9
更新日期：2008-02-01 00:00:00
abstract：:Photosynthetic acclimation varies among species, which likely reveals variations at the biochemical level in the pathways that constitute carbon assimilation and energy transfer. Local adaptation and phenotypic plasticity affect the environmental response of photosynthesis. Phenotypic plasticity allows for a wide arra...
journal_title：Photosynthesis research
pub_type： 杂志文章,评审
doi：10.1007/s11120-013-9816-3
更新日期：2014-02-01 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
abstract：:The analysis of primary and secondary nitrogen metabolism in plants by nuclear magnetic resonance (NMR) spectroscopy is comprehensively reviewed. NMR is a versatile analytical tool, and the combined use of (1)H, (2)H, (13)C, (14)N and (15)N NMR allows detailed investigation of the acquisition, assimilation and metabol...
journal_title：Photosynthesis research
pub_type： 杂志文章,评审
doi：10.1007/s11120-004-2081-8
更新日期：2005-01-01 00:00:00
abstract：:Relationships between induced high leaf intercellular CO₂ concentrations, leaf K⁺ and NO₃⁻ ion movement and early fruit formation under macronutrient limitation are not well understood. We examined the effects and interactions of reduced K/N input treatments on leaf intercellular CO₂, photosynthesis rate, carboxylatio...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-013-9832-3
更新日期：2013-07-01 00:00:00
abstract：:Upon a sudden transition from high to low light, the rate of CO2 assimilation (AN) in some plants first decreases to a low level before gradually becoming stable. However, the underlying mechanisms remain controversial. The activity of chloroplast ATP synthase (gH+) is usually depressed under high light when compared ...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-020-00725-y
更新日期：2020-04-01 00:00:00
abstract：:Brownian Dynamics (BD) computer simulations were used to study electrostatic interactions between turnip cytochrome f (cyt f) and spinach plastocyanin (PC). Three different spinach PC structures were studied: The X-ray crystal structure of Xue and coworkers [(1998) Protein Sci 7:2099-2105] and the NMR structure of Mus...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-007-9192-y
更新日期：2007-11-01 00:00:00
abstract：:The afterglow (AG) band of thermoluminescence (TL) has been investigated in leaves of Arabidopsis thaliana. Excitation of dark-adapted leaves with two saturating single turn-over flashes induced the appearance of a complex TL glow curve that could be well simulated by three components: the two components, B1 and B2, o...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-004-7311-6
更新日期：2005-06-01 00:00:00
abstract：:Acaryochloris marina is a unique cyanobacterium that contains chlorophyll (Chl) d as a major pigment. Because Chl d has smaller excitation energy than Chl a used in ordinary photosynthetic organisms, the energetics of the photosystems of A. marina have been the subject of interest. It was previously shown that the red...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-014-0073-x
更新日期：2015-08-01 00:00:00
abstract：:This paper is concerned with relating thermoluminescence to the total free-energy change, ΣG, involved in detrapping a particular electron-hole pair as a photosynthetic sample is warmed from an initial low temperature. It extends a mathematical discussion of four possible mechanisms introduced in an earlier paper [DeV...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00032597
更新日期：1990-05-01 00:00:00
abstract：:Pigment-protein-complexes of two chlorophyll b deficient mutants of Arabidopsis and from the wild type were separated electrophoretically. Light-harvesting proteins were absent in the chlorophyll b free mutant ch(1) and their amount was reduced in the mutant ch(2) which has a reduced content of chlorophyll b. The rati...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00041827
更新日期：1983-01-01 00:00:00
abstract：:Ten strains from a collection of mutants ofSynechocystis 6803 defective in Photosystem II (PS II) function were transformed with chromosomal DNA of wild-type and mutant cells. Cross hybridization data allowed to identify four groups of PS II-mutants. Highly efficient transformation was observed between different mutan...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF02187472
更新日期：1993-08-01 00:00:00
abstract：:Ongoing work has led to the identification of most of the biochemical steps in carotenoid biosynthesis in chlorophototrophic bacteria. In carotenogenesis, a relatively small number of modifications leads to a great diversity of carotenoid structures. This review examines the individual steps in the pathway, discusses ...
journal_title：Photosynthesis research
pub_type： 杂志文章,评审
doi：10.1007/s11120-008-9312-3
更新日期：2008-08-01 00:00:00
abstract：:To determine the fluorescence properties of cyanobacterial Photosystem I (PS I) in relatively intact systems, fluorescence emission from 20 to 295 K and polarization at 77 K have been measured from phycobilisomes-less thylakoids of Synechocystis sp. PCC 6803 and a mutant strain lacking Photosystem II (PS II). At 295 K...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00028785
更新日期：1992-02-01 00:00:00
