Abstract：
:Effect of water-soluble and stable sucrose-bound iron oxyhydroxide nanoparticles [Fe[III] sucrose complex (FSC)] on the efficiency of electron transport in the photosystem II membranes was studied. FSC significantly increases (by a factor 1.5) the rate of light-induced oxygen evolution in the presence of alternative electron acceptor 2,6-dichloro-p-benzoquinone (DCBQ). Without DCBQ, FSC only slightly (5%) provides the oxygen evolution. Electron transport supported by pair DCBQ + FSC is inhibited by diuron. Maximum of stimulating effect was recorded at Fe(III) concentration 5 µM. In the case of another benzoquinone electron acceptor (2-phenyl-p-benzoquinone and 2,3-dimethyl-p-benzoquinone) and 2,6-dichlorophenolindophenol, stimulating effect of FSC was not observed. Incubation of PSII membranes at different concentrations with FSC is accompanied by binding of Fe(III) by membrane components but only about 50% of iron can be extracted by membranes from Fe(III) solution at pH 6.5. This result implies the heterogeneity of FSC solution in a buffer. The heterogeneity depends on pH and decreases with its rising. At pH around 9.0 Fe(III), sucrose solution is homogeneous. The study of pH effect has shown that stimulation of electron transport is induced only by iron cations which can be bound by membranes. Not extractable iron pool cannot activate electron transfer from oxygen-evolving complex to DCBQ.
journal_name
Photosynth Resjournal_title
Photosynthesis researchauthors
Semin BК,Davletshina LN,Rubin ABdoi
10.1007/s11120-019-00647-4subject
Has Abstractpub_date
2019-10-01 00:00:00pages
57-67issue
1eissn
0166-8595issn
1573-5079pii
10.1007/s11120-019-00647-4journal_volume
142pub_type
杂志文章abstract：:Quantum mechanics/molecular mechanics (QM/MM) hybrid methods are currently the most powerful computational tools for studies of structure/function relations and structural refinement of macrobiomolecules (e.g., proteins and nucleic acids). These methods are highly efficient, since they implement quantum chemistry tech...
journal_title：Photosynthesis research
pub_type： 杂志文章,评审
doi：10.1007/s11120-009-9467-6
更新日期：2009-11-01 00:00:00
abstract：:The light-harvesting complex (LHC) of higher plants isolated using Triton X-100 has been studied during its transformation into a monomeric form known as CPII. The change was accomplished by gradually increasing the concentration of the detergent, sodium dodecyl sulfate (SDS). Changes in the red spectral region of the...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00029727
更新日期：1986-01-01 00:00:00
abstract：:Phosphatidylglycerol (PG), containing the unique fatty acid Delta3, trans-16:1-hexadecenoic acid, is a minor but ubiquitous lipid component of thylakoid membranes of chloroplasts and cyanobacteria. We investigated its role in electron transfers and structural organization of Photosystem II (PSII) by treating Arabidops...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-006-9126-0
更新日期：2007-07-01 00:00:00
abstract：:It is already well established that the high-frequency intramolecular vibrations are responsible for many observed dynamic phenomena in linear and nonlinear electronic spectroscopy such as the spectral lineshape formation, the transition dipole moment, the lifetime borrowing, and vibrational and mixed coherence beats....
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
abstract：:In this article I review the history of research on the Fenna-Matthews-Olson (FMO) protein with emphasis on my contributions. The FMO protein, which transfers energy from the chlorosome to the reaction center in green sulfur bacteria, was discovered in 1962 and shown to contain bacteriochlorophyll a. From the absorpti...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1023/B:PRES.0000030428.36950.43
更新日期：2004-01-01 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：:Prior to the 1960s, the model for the molecular structure of cell membranes consisted of a lipid bilayer held in place by a thin film of electrostatically-associated protein stretched over the bilayer surface: (the Danielli-Davson-Robertson "unit membrane" model). Andrew Benson, an expert in the lipids of chloroplast ...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-007-9159-z
更新日期：2007-05-01 00:00:00
abstract：:Sulfur is one of the critical elements in living matter, as it participates in several structural, metabolic and catalytic activities. Photosynthesis is an important process that entails the use of sulfur during both the light and carbon reactions. Nearly half of global photosynthetic carbon fixation is carried out by...
journal_title：Photosynthesis research
pub_type： 杂志文章,评审
doi：10.1007/s11120-005-3250-0
更新日期：2005-12-01 00:00:00
abstract：:Since 1986, non-uniform photosynthesis over the leaf area that may be attributed to patchy stomatal closure, has been an important issue in stress physiology of photosynthesis. In this review, I first outline the gaseous environment within the intercellular spaces, because this is the most fundamental background of th...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00035537
更新日期：1992-03-01 00:00:00
abstract：:Light activation of phosphoenolpyruvate carboxylase from the leaves of the C4 plant Setaria verticillata (L.) is more pronounced at low CO2 levels. The 2-fold activation observed at physiological ambient CO2 becomes 3.64-fold at 5 μL/L and completely abolished above 700 μL/L. When the stomata close under the influence...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00034834
更新日期：1988-11-01 00:00:00
abstract：:Electron transfer pathways in photosynthesis involve interactions between membrane-bound complexes such as reaction centres with an extrinsic partner. In this study, the biological specificity of electron transfer between the reaction centre-light-harvesting 1-PufX complex and its extrinsic electron donor, cytochrome ...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-013-9812-7
更新日期：2014-05-01 00:00:00
abstract：:Chlorobaculum [Cba.] tepidum is known to grow optimally at 48-52 °C and can also be cultured at ambient temperatures. In this paper, we prepared constant temperature, temperature shift, and temperature shift followed by backshift cultures and investigated the intrinsic properties and spectral features of chlorosomes f...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-013-9800-y
更新日期：2013-05-01 00:00:00
abstract：:Chlorosomes, the light-harvesting apparatus of green bacteria, are a unique antenna system, in which pigments are organized in aggregates rather than associated with proteins. Isolated chlorosomes from the green sulphur bacterium Chlorobium tepidum contain 10 surface-exposed proteins. Treatment of chlorosomes from Chl...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-005-3757-4
更新日期：2005-11-01 00:00:00
abstract：:The chlorophyll-protein and polypeptide composition of manganese deficient and control sugar beet thylakoids was examined using three different detergent-electrophoresis systems. On a per chlorophyll basis, manganese deficiency reduced the amounts of CPa complex (separated by sodium dodecylsulfate (SDS)-polyacrylamide...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00014677
更新日期：1986-01-01 00:00:00
abstract：:In recent years the enzymes of the C3 photosynthetic carbon reduction (PCR) cycle have been studied using the techniques of molecular biology. In this review we discuss the primary protein sequences and structural predictions that have been made for a number of these enzymes, which, with the input of crystallographic ...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00029971
更新日期：1991-01-01 00:00:00
abstract：:After a brief prologue on Otto Kandler's life, we describe briefly his pioneering work on photosynthesis (photophosphorylation and the carbon cycle) and his key participation in the discovery of the concept of three forms of life (Archaea, Prokarya, and Eukarya). With Otto Kandler's passing, both the international pho...
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 psaA and psaB genes of the chloroplast genome in oxygenic photosynthetic organisms code for the major peptides of the Photosystem 1 reaction center. A heterodimer of the two polypeptides PsaA and PsaB is thought to bind the reaction center chlorophyll, P700, and the early electron acceptors A0, A1 and Fe-SX. Fe-SX...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00020438
更新日期：1995-11-01 00:00:00
abstract：:A model is presented describing the relationship between chlorophyll fluorescence quenching and photoinhibition of Photosystem (PS) II-dependent electron transport in chloroplasts. The model is based on the hypothesis that excess light creates a population of inhibited PS II units in the thylakoids. Those units are su...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00042009
更新日期：1991-12-01 00:00:00
abstract：:A rapid procedure has been developed for the isolation of the photosystem two reaction centre complex (PS II RC) from a double mutant of Chlamydomonas reinhardtii, F54-14, which lacks the Photosystem one complex and the chloroplast ATPase. Thylakoid membranes are solubilised with 1.5% (w/v) Triton X-100 and the PS II ...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00042974
更新日期：1995-02-01 00:00:00
abstract：:The unicellular green alga Chlamydomonas reinhardtii acclimates to low-CO2 (LC) conditions by actively transporting inorganic carbon (Ci) into the cell, resulting in an increase in photosynthetic efficiency. This mechanism is called the carbon-concentrating mechanism (CCM), and soluble protein LCIB is essential for th...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-013-9963-6
更新日期：2014-09-01 00:00:00
abstract：:By recording leaf transmittance at 820 nm and quantifying the photon flux density of far red light (FRL) absorbed by long-wavelength chlorophylls of Photosystem I (PS I), the oxidation kinetics of electron carriers on the PS I donor side was mathematically analyzed in sunflower (Helianthus annuus L.), tobacco (Nicotia...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1023/A:1026070612022
更新日期：2003-01-01 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：:Rates of net CO2 uptake were examined in developing leaves of Hydrocotyle bonariensis. Leaves that developed under high photosynthetically active radiation (48 mol m(-2) day(-1) PAR) were smaller, thicker, and reached maximum size sooner than did leaves that developed under low PAR (4.8 mol m(-2) day(-1)). Maximum net...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00028750
更新日期：1981-06-01 00:00:00
abstract：:Cyanobacteria are photosynthetic prokaryotes and widely used for photosynthetic research as model organisms. Partly due to their prokaryotic nature, however, estimation of photosynthesis by chlorophyll fluorescence measurements is sometimes problematic in cyanobacteria. For example, plastoquinone pool is reduced in th...
journal_title：Photosynthesis research
pub_type： 杂志文章,评审
doi：10.1007/s11120-017-0367-x
更新日期：2017-09-01 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：:Energy storage measurements by modulated photothermal radiometry (PTR) were carried out on intact leaves to assess the value of the PTR method for photosynthesis research. In particular, correlations to the redox state of P700 under various conditions were examined. PTR monitors modulated light conversion to heat by s...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00035379
更新日期：1991-08-01 00:00:00
abstract：:We evaluate low-temperature (low-T) emission spectra of photosystem II core complexes (PSII-cc) previously reported in the literature, which are compared with emission spectra of PSII-cc obtained in this work from spinach and for dissolved PSII crystals from Thermosynechococcus (T.) elongatus. This new spectral datase...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-015-0128-7
更新日期：2015-06-01 00:00:00
abstract：:Characteristics of primary phases in chlorophyll a fluorescence transients based on room temperature in vivo measurement with a Plant Productivity Fluorometer (Brancker Model SF-10) can be greatly facilitated by coupling the instrument to a fast data acquisition system. The SF-10 was linked to a Multitech Industrial C...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00041817
更新日期：1983-01-01 00:00:00
abstract：:In plants, chlorophylls (chlorophyll a and chlorophyll b) are the most abundant tetrapyrrole molecules and are essential for photosynthesis. The first committed step of chlorophyll biosynthesis is the insertion of Mg(2+) into protoporphyrin IX, and thus subsequent steps of the biosynthesis are called the Mg branch. As...
journal_title：Photosynthesis research
pub_type： 杂志文章,评审
doi：10.1007/s11120-008-9291-4
更新日期：2008-05-01 00:00:00
abstract：:The current study confirmed earlier conclusions regarding differential ozone (O(3)) tolerances of two soybean cultivars, Essex and Forrest, and evaluated antioxidant enzyme activities of these two varieties based on their performance under environmentally relevant, elevated O(3) conditions. The experiment was conducte...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1023/A:1026500911237
更新日期：2000-01-01 00:00:00
