Abstract:
:Flash-induced kinetics of the membrane potential increase related to electron transfer within the cytochrome (cyt) b/c1 complex (Phase III) and that of cyt c1+c2 reduction have been measured as a function of myxothiazol concentration in isolated chromatophores and whole cells of Rhodobacter sphaeroides. Upon addition of nonsaturating concentrations of myxothiazol, kinetics of Phase III display two phases, Phase IIIa and Phase IIIb. The amplitude of Phase IIIa, completed in about 10 ms, is proportional to the fraction of non-inhibited cyt b/c1 complexes, while its half-time is independent of the myxothiazol concentration. A fast cyt c1+c2 reduction phase is correlated to Phase IIIa. These experiments demonstrate that, in a range of time of several ms, diffusion of cyt c2 is restricted to domains formed by a supercomplex including two reaction centers (RCs) and a single cyt b/c1 complex, as proposed by Joliot et al. (Biochim Biophys Acta 975: 336-345, 1989). Phase IIIb, completed in about 100 ms, shows that positive charges or inhibitor molecules are exchanged between supercomplexes in this range of time. These exchanges occur within domains including 2 to 3 supercomplexes, i.e. in membrane domains smaller than a single chromatophore. These conclusions apply to both isolated chromatophores and whole cells.
journal_name
Photosynth Resjournal_title
Photosynthesis researchauthors
Joliot P,Verméglio A,Joliot Adoi
10.1007/BF00041020subject
Has Abstractpub_date
1996-05-01 00:00:00pages
291-9issue
1-2eissn
0166-8595issn
1573-5079journal_volume
48pub_type
杂志文章abstract::The possible origins of the different fluorescence decay components in green plants are discussed in terms of a random walk and Butler's bipartite model. The interaction of the excitations with the photosystem II reaction centers and, specifically, the regeneration of theses excitations by charge recombination within ...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00118288
更新日期:1986-01-01 00:00:00
abstract::Chlorophyll (Chl) is an essential component of the photosynthetic apparatus. Embedded into Chl-binding proteins, Chl molecules play a central role in light harvesting and charge separation within the photosystems. It is critical for the photosynthetic cell to not only ensure the synthesis of a sufficient amount of new...
journal_title:Photosynthesis research
pub_type: 杂志文章,评审
doi:10.1007/s11120-013-9797-2
更新日期:2014-02-01 00:00:00
abstract::Photosynthetic electron transfer has been examined in whole cells, isolated membranes and in partially purified reaction centers (RCs) of Roseicyclus mahoneyensis, strain ML6 and Porphyrobacter meromictius, strain ML31, two species of obligate aerobic anoxygenic phototrophic bacteria. Photochemical activity in strain ...
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
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::Rhodobacter sphaeroides 2.4.1 is an alpha-3 purple nonsulfur eubacterium with an extensive metabolic repertoire. Under anaerobic conditions, it is able to grow by photosynthesis, respiration and fermentation. Photosynthesis may be photoheterotrophic using organic compounds as both a carbon and a reducing source, or ph...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1023/A:1013831823701
更新日期:2001-01-01 00:00:00
abstract::The oxidation kinetics under far-red light (FRL) of photosystem I (PSI) high potential donors P700, plastocyanin (PC), and cytochrome f (Cyt f) were investigated in sunflower leaves with the help of a new high-sensitivity photometer at 810 nm. The slopes of the 810 nm signal were measured immediately before and after ...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-007-9224-7
更新日期:2007-10-01 00:00:00
abstract::Biological water oxidation, performed by a single enzyme, photosystem II, is a central research topic not only in understanding the photosynthetic apparatus but also for the development of water splitting catalysts for technological applications. Great progress has been made in this endeavor following the report of a ...
journal_title:Photosynthesis research
pub_type: 杂志文章,评审
doi:10.1007/s11120-019-00648-3
更新日期:2019-10-01 00:00:00
abstract::A hypothesis is proposed to explain the function of Cl(-) in activating the oxygenevolving complex (OEC) of photosystem II (PS II), based on the results of recent (35)Cl-NMR studies. The putative mechanism involves Cl(-) binding to two types of sites. An intrinsic site is suggested to be composed of three histidyl res...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00029400
更新日期:1987-09-01 00:00:00
abstract::In this communication, we report our progress on the development of low-frequency Fourier transform infrared (FTIR) spectroscopic techniques to study metal-substrate and metal-ligand vibrational modes in the Photosystem II/oxygen-evolving complex (PS II/OEC). This information will provide important structural and mech...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1023/A:1010779327960
更新日期:2000-01-01 00:00:00
abstract::Although it has been believed that wild-type plants are capable of protecting photosystem I (PSI) under high light, our previous study indicates that PSI is sensitive to high light in the shade-established tree species Psychotria rubra. However, the underlying physiological mechanisms are unclear. In this study, we ex...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-016-0275-5
更新日期:2016-07-01 00:00:00
abstract::Roderick K. Clayton passed away on October 23, 2011, at the age of 89, shortly after the plan for this dedicatory issue of Photosynthesis Research had been hatched. I had just written a lengthy letter to him to re-establish contact after a hiatus of 2 or 3 years, and to suggest that I visit him to talk about his life....
journal_title:Photosynthesis research
pub_type: 传,历史文章,杂志文章
doi:10.1007/s11120-013-9948-5
更新日期:2014-05-01 00:00:00
abstract::A peptide ranging from residue 229 to 240 of the D1 protein of Photosystem (PS) II was synthesized and lanthanides were used as candidates of calcium. Fluorescence and FTIR spectroscopy were used to test the conformational adaptation after lanthanide additions. Fluorescence spectroscopy showed that the synthetic pepti...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00048603
更新日期:1995-06-01 00:00:00
abstract::This article gives an historical overview of our group's research on various metabolite translocators of chloroplasts, such as the translocators for phosphorylated intermediates of the Calvin-Benson cycle and of glycolysis, of ADP and ATP, of dicarboxylates, of pyruvate and of hexoses; how it began and where it led to...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1023/A:1020475803784
更新日期:2002-01-01 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::Pulse modulated fluorescence has increasingly been used as an ecological tool to examine changes in the vertical distribution of microphytobenthic cells within the upper layers of estuarine sediments (most often using the minimum fluorescence yield F(o)) as well as to indicate the health of the community (using the ma...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1023/B:PRES.0000028397.86495.b5
更新日期:2004-01-01 00:00:00
abstract::The first research paper on photosynthesis in China was published by T.T. Li(2) in 1929. Two photosynthesis laboratories were established in Shanghai and Beijing in the 1950s and the 1960s, respectively. A photophosphorylation 'intermediate' was discovered after the energy conversion process was separated into light a...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1023/A:1024946222187
更新日期:2003-01-01 00:00:00
abstract::A recent publication (Esteban in New Phytol 217:341-342, 2018) describes how the use and citation of the assay of chlorophylls a and b extracted in aqueous 80% acetone by Arnon (Plant Physiol 2:1-15, 1949) is increasing, even in journals with high impact factors. This is a very disconcerting situation: the assay is ou...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-018-0579-8
更新日期:2019-05-01 00:00:00
abstract::The picture presently emerging from studies on the mechanism of photosystem II electron transport is discussed. The reactions involved in excitation trapping, charge separation and stabilization of the charge pair in the reaction center, followed by the reactions with the substrates, plastoquinone reduction and water ...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00032785
更新日期:1985-01-01 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::The potential role of foliar carbon export features in the acclimation of photosynthetic capacity to differences and changes in light environment was evaluated. These features included apoplastic vs. symplastic phloem loading, density of loading veins, plasmodesmatal frequency in intermediary cells, and the ratio of l...
journal_title:Photosynthesis research
pub_type: 杂志文章,评审
doi:10.1007/s11120-006-9123-3
更新日期:2007-11-01 00:00:00
abstract::A computer model comprising light reactions in PS II and PS I, electron-proton transport reactions in mesophyll and bundle sheath chloroplasts, all enzymatic reactions and most of the known regulatory functions of NADP-ME type C(4) photosynthesis has been developed as a system of differential budget equations for inte...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1023/A:1010695402963
更新日期:2000-01-01 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::Soybean [Glycine max (L.) Merr. cv. Williams 82 and A3127] plants were grown in the field under long-term soil moisture deficit and irrigation to determine the effects of severe drought stress on the photosynthetic capacity of soybean leaves. Afternoon leaf water potentials, stomatal conductances, intercellular CO2 co...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00051735
更新日期:1990-07-01 00:00:00
abstract::The binding characteristics and the inhibitory power of atrazine and DCMU towards uncoupled electron flow activity were studied in acyl lipid-depleted thylakoid membranes from atrazine-susceptible and-resistant biotypes of Solanum nigrum L. For this purpose, phospholipase A2 from Vipera russelli and the lipase from Rh...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00049537
更新日期:1992-01-01 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::In appreciation of his contribution to the Photosystsem II research and commemoration of the book Photosystem II: The Light-Driven Water-Plastoquinone Oxido-Reductase, co-edited with Kimiyuki Satoh, I present here some of my recollections of Thomas John Wydrzynski and by several others with whom he has associated over...
journal_title:Photosynthesis research
pub_type: 传,历史文章,杂志文章
doi:10.1007/s11120-008-9341-y
更新日期:2008-10-01 00:00:00
abstract::In this brief report, we provide a pictorial essay on an international conference "Photosynthesis Research for Sustainability-2013 in honor of Jalal A. Aliyev" that was held in Baku, Azerbaijan, during June 5-9, 2013 ( http://photosynthesis2013.cellreg.org/ ). We begin this report with a brief note on Jalal Aliyev, th...
journal_title:Photosynthesis research
pub_type:
doi:10.1007/s11120-013-9901-7
更新日期:2013-12-01 00:00:00
abstract::In studies on photosynthetic systems it is common practice to interpret the results of time-resolved fluorescence experiments on the basis of compartmental, or target, models. Each compartment represents a group of molecules with similar fluorescence characteristics. In cases of practical interest, the members of each...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00014883
更新日期:1996-11-01 00:00:00
abstract::Oxygen may enhance CO2-saturated photosynthesis in intact leaves, which display the Warburg effect when illuminated at the current atmospheric level of CO2 and O2, of about 350 microl l(-1) and 21%, respectively. The magnitude of the stimulation depends on irradiance. The K(M)(O2) of the stimulation is 128 microM (10....
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-006-9050-3
更新日期:2006-06-01 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