Structural Basis of Redox Signaling in Photosynthesis: Structure and Function of Ferredoxin:thioredoxin Reductase and Target Enzymes.

abstract：:The dependence of chlorosome development on bacteriochlorophyll (BChl)c synthesis was studied with the phototrophic green bacteriumChloroflexus aurantiacus. By selecting defined culture conditions, three possibilities could be identified. Upon addition of 5-aminolevulinic acid, cells of resting cultures increased thei...

journal_title：Photosynthesis research

authors： Foidl M,Golecki JR,Oelze J

更新日期：1994-07-01 00:00:00

abstract：:Using a novel, pulsed micro-second time-resolved photoacoustic (PA) instrument, we measured thermal dissipation and energy storage (ES) in the intact cells of wild type (WT) Chlamydomonas reinhardtii, and mutants lacking either PSI or PSII reaction centers (RCs). On this time scale, the kinetic contributions of the th...

journal_title：Photosynthesis research

authors： Yan C,Schofield O,Dubinsky Z,Mauzerall D,Falkowski PG,Gorbunov MY

更新日期：2011-09-01 00:00:00

abstract：:The Photosystem I reaction centre protein CP1, isolated from barley using polyacrylamide gel electrophoresis showed an EPR (Electron Paramgnetic Resonance) spectrum with the polarisation pattern AEEAAE, typical of the primary donor triplet state (3)P700, created via radical pair formation and recombination. (3)P700 co...

journal_title：Photosynthesis research

authors： Searle GF,Schaafsma TJ

更新日期：1992-06-01 00:00:00

abstract：:This concise review describes the current status of research into how carotenoids function in bacterial photosynthesis. This is illustrated by reference to very recent studies on both the photoprotective and antenna functions of carotenoids. The major remaining open questions on the detailed molecular mechanisms invol...

journal_title：Photosynthesis research

authors： Fraser NJ,Hashimoto H,Cogdell RJ

更新日期：2001-01-01 00:00:00

abstract：:I provide here a personal perspective on (i) the awards that were given to young investigators at the 2008 and 2009 Gordon Research Conferences on Biochemistry/Biophysics of Photosynthesis; and (ii) the ambiance at these conferences through some photographs, particularly of the 2009 conference. ...

journal_title：Photosynthesis research

authors： Govindjee

更新日期：2009-10-01 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

authors： Porra RJ,Scheer H

更新日期：2019-05-01 00:00:00

abstract：:Using 77 K chlorophyll a (Chl a) fluorescence spectra in vivo, the development was studied of Photosystems II (PS II) and I (PS I) during greening of barley under intermittent light followed by continuous light at low (LI, 50 mumol m(-2) s(-1)) and high (HI, 1000 mumol m(-2) s(-1)) irradiances. The greening at HI inte...

journal_title：Photosynthesis research

authors： Cajánek M,Navrátil M,Kurasová I,Kalina J,Spunda V

更新日期：2002-01-01 00:00:00

abstract：:Minimal photosynthetic catalytic F1(αβ) core complexes, containing equimolar ratios of the α and β subunits, were isolated from membrane-bound spinach chloroplast CF1 and Rhodospirillum rubrum chromatophore RrF1. A CF1-α3β3 hexamer and RrF1-α1β1 dimer, which were purified from the respective F1(αβ) complexes, exhibit ...

journal_title：Photosynthesis research

authors： Gromet-Elhanan Z,Sokolov M

更新日期：1995-11-01 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

authors： Wittmershaus BP,Woolf VM,Vermaas WF

更新日期：1992-02-01 00:00:00

abstract：:The electronic structure of a Mn(II) ion bound to highly oxidizing reaction centers of Rhodobacter sphaeroides was studied in a mutant modified to possess a metal binding site at a location comparable to the Mn4Ca cluster of photosystem II. The Mn-binding site of the previously described mutant, M2, contains three car...

journal_title：Photosynthesis research

authors： Tufts AA,Flores M,Olson TL,Williams JC,Allen JP

更新日期：2014-05-01 00:00:00

abstract：:An immunological method for quantitative determination of photosynthetic fructose-1,6-bisphosphatase in crude extracts of leaves is proposed. It is based on the ELISA technique, and offers two modifications. A non-competitive technique has a higher sensitivity and is the right option for samples of low fructose-1,6-bi...

journal_title：Photosynthesis research

authors： Hermoso R,Chueca A,Lazaro JJ,Lopez-Gorge J

更新日期：1987-01-01 00:00:00

abstract：:Glycolate oxidase (GO; EC 1.1.3.1) was purified from the leaves of three plant species:Amaranthus hypochondriacus L.(NAD-ME type C4 dicot),Pisum sativum L. (C3 species) andParthenium hysterophorus L. (C3-C4. intermediate). A flavin moiety was present in the enzyme from all the three species. The enzyme from the C4 pla...

journal_title：Photosynthesis research

authors： Devi MT,Rajagopalan AV,Raghavendara AS

更新日期：1996-03-01 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

authors： Yang YJ,Zhang SB,Wang JH,Huang W

更新日期：2020-04-01 00:00:00

abstract：:We present here our tribute to an outstanding unique scientist, a pioneer of plant biochemistry, best known for his seminal ground-breaking discoveries related to electron and proton transport, and their intimate relation to ATP synthesis in chloroplasts. His dedication and in-depth understanding of science was matche...

journal_title：Photosynthesis research

authors： Govindjee

更新日期：2017-06-01 00:00:00

abstract：:The effect of nitrate and nitrite on long-term chlorophyll fluorescence has been studied in filamentous blue-green algae. Cells grown autotrophically with nitrate as nitrogen source show, under argon atmosphere, a high level of fluorescence. The addition of either nitrete or nitrite induces a significant fluorescence ...

journal_title：Photosynthesis research

authors： Serrano A,Rivas J,Losada M

更新日期：1981-09-01 00:00:00

abstract：:The polypeptide composition of thylakoid membranes of the red alga Cyanidium caldarium was studied by PAGE in the presence of lithium dodecyl sulfate. The thylakoid membranes were shown to contain 65 polypeptides with mol wt from 110 to 10 kDa. PS I isolated from C. caldarium cells is composed of at least 5 components...

journal_title：Photosynthesis research

authors： Yurina NP,Karakashev GV,Karapetyan NV,Odintsova MS

更新日期：1991-10-01 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

authors： Wang P,Grimm B

更新日期：2015-12-01 00:00:00

abstract：:A synthetic fluorochromous lipid, rhodaminyl triglyceride (rhodaminyl TG), was intercalated into isolated thylakoid membranes of chloroplasts up to 30 molecules per 100 molecules of chlorophyll. As a result of fluorochrome presence, an absorption band appeared in a yellow-green spectrum region, its intensity being com...

journal_title：Photosynthesis research

authors： Sorokin EM,Bobylyev GS,Molotkovsky YG

更新日期：1990-11-01 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

authors： Cavanagh AP,Kubien DS

更新日期：2014-02-01 00:00:00

abstract：:The effects of root applications of kinetin, gibberellic acid (GA3) and indoleacetic acid (IAA) on photosynthesis was measured using an open infrared CO2 gas-exchange system. There was a 30-35% increase in the photosynthetic rates (mg CO2/dm(2)/hr) of attached leaves within 8 hr following root treatment with 0.47 μM k...

journal_title：Photosynthesis research

authors： Dong CN,Arteca RN

更新日期：1982-01-01 00:00:00

abstract：:Solubilisation of thylakoid membranes from young leaves of Pisum sativum in the presence of Triton X-100 resulted in an almost complete loss of quenching of light-harvesting chlorophyll-protein (LHCP) fluorescence, as measured at 77°K. There were concomitant changes in the kinetics of light-saturation curves of electr...

journal_title：Photosynthesis research

authors： Murphy DJ

更新日期：1986-01-01 00:00:00

abstract：:Bioenergetic properties of thylakoids from plants submitted to a water stress stress (watering stopped for 6-15 days) have been measured in two lupin genotypes characterized as resistant or susceptible to drought. This energy coupling was assessed by flow-force relationships relating the phosphorylation rate to the ma...

journal_title：Photosynthesis research

authors： Meyer S,Phung Nhu Hung S,Trémolières A,de Kouchkovsky Y

更新日期：1992-05-01 00:00:00

abstract：:Cells of the green alga Dunaliella tertiolecta grown in a light/dark cycle were exposed to high light for about 15 min. In light, energy-dependent quenching reduced fluorescence emission and decreased PS II efficiency. Within 3 minutes after darkening fluorescence quenching largely relaxed. However, PS II fluorescence...

journal_title：Photosynthesis research

authors： Casper-Lindley C,Björkman O

更新日期：1996-12-01 00:00:00

abstract：:The chloroplast photo-oxidation and the expression of the Cab gene Lhcb1, encoding the Lhcb1 light-harvesting chlorophyll a/b-protein of PS II, have been studied in leaf cells of maize treated with the two bleaching herbicides norflurazon and amitrole and of the two carotenoid-free mutants vp9 and vp2 grown under high...

journal_title：Photosynthesis research

authors： Rocca NL,Barbato R,Vecchia FD,Rascio N

更新日期：2000-01-01 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

authors： Norici A,Hell R,Giordano M

更新日期：2005-12-01 00:00:00

abstract：:A spontaneous mutant (R/89) of photosynthetic purple bacterium Rhodobacter sphaeroides R-26 was selected for resistance to 200 μM atrazin. It showed increased resistance to interquinone electron transfer inhibitors of o-phenanthroline (resistance factor, RF=20) in UQo reconstituted isolated reaction centers and terbut...

journal_title：Photosynthesis research

authors： Tandori J,Nagy L,Puskás A,Droppa M,Horváth G,Maróti P

更新日期：1995-08-01 00:00:00

abstract：:The interaction of PsaC with the core heterodimer of Photosystem 1 was studied in wild type Synechocystis sp. PCC 6803 and the site-directed mutant R561E of PsaB. The mutant reaction center was much less stable in urea and the functional reconstitution of the mutant core using PsaC was impaired. However, the extent of...

journal_title：Photosynthesis research

authors： Rodday SM,Schulz R,McLntosh L,Biggins J

更新日期：1994-12-01 00:00:00

abstract：:Photosystem II (PSII) catalyzes the oxidation of water to O2 at the manganese-containing, oxygen-evolving complex (OEC). Photoexcitation of PSII results in the oxidation of the OEC; four sequential oxidation reactions are required for the generation and release of molecular oxygen. Therefore, with flash illumination, ...

journal_title：Photosynthesis research

authors： Cooper IB,Barry BA

更新日期：2007-06-01 00:00:00

abstract：:The PAM-2000 portable chlorophyll fluorometer represents one of the first commercially available instruments utilizing the Pulse Amplitude Modulation (PAM) measurement principle, and has become a widely used platform for measuring chlorophyll fluorescence in a wide range of study systems. In this paper, we describe a ...

journal_title：Photosynthesis research

authors： Gray DW,Cardon ZG,Lewis LA

更新日期：2006-03-01 00:00:00

abstract：:The Fabaceae tree Butea monosperma (TAUB.; syn. Erythrina monosperma (LAM.)) is widely distributed in Central and West-India. We studied it at three sites, i.e. at two locations with contrasting exposure (NE and SW, respectively) in a small mountain range with poor soil on highly drained rocky slopes and at a third lo...

journal_title：Photosynthesis research

authors： Mikosch M,Kumari N,Sharma T,Sharma V,Gessler A,Fischer-Schliebs E,Lüttge U

更新日期：2012-09-01 00:00:00