Organization of chlorophyll biosynthesis and insertion of chlorophyll into the chlorophyll-binding proteins in chloroplasts.

abstract：:The nucleotide sequences of the genes coding for the subunits of the Photosystem I (PS I) core, PsaA and PsaB were determined for the marine prokaryotic oxyphototrophs Prochlorococcus sp. MED4 (CCMP1378), P. marinus SS120 (CCMP1375) and Synechococcus sp. WH7803. Divergence of these sequences from those of both freshwa...

journal_title：Photosynthesis research

authors： van der Staay GW,Moon-van der Staay SY,Garczarek L,Partensky F

更新日期：2000-01-01 00:00:00

abstract：:DCMU (3-(3,4-dichlorophenyl)-1,1-dimethylurea) at concentrations higher than 10 μM suppresses the second time range delayed fluorescence (DF) of pea chloroplasts, due to inhibition of the oxidizing side of photosystem II (PS II). The inhibition of the reducing side of PS II resulting in the suppression of millisecond ...

journal_title：Photosynthesis research

authors： Vasil'ev IR,Matorin DN,Lyadsky VV,Venediktov PS

更新日期：1988-01-01 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：:A combination of inhibitor and (15)N studies were used to investigate the photorespiratory nitrogen cycle in maize, a C4 plant. Inhibitors used included isonicotinyl hydrazide which blocks the conversion of glycine to serine, methionine sulfoximine an inhibitor of GS and azaserine an inhibitor of GOGAT. Results from l...

journal_title：Photosynthesis research

authors： Berger MG,Fock HP

更新日期：1983-01-01 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

authors： Adams WW 3rd,Watson AM,Mueh KE,Amiard V,Turgeon R,Ebbert V,Logan BA,Combs AF,Demmig-Adams B

更新日期：2007-11-01 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：:In many ways, the 1963 conference at Airlie House was an unusual event. The meeting convincingly demonstrated that photosynthetic research, previously reported mostly at conferences of botany and/or plant physiology, had become an independent and important field of biological research. New techniques had been develope...

journal_title：Photosynthesis research

authors： Rurainski HJ

更新日期：2004-01-01 00:00:00

abstract：:A short list of the twentieth century's dominant figures in photosynthesis would unquestionably include Otto Warburg. One of his many discoveries, the 'bicarbonate effect' remains a lasting puzzle to his heirs in the field. Recent developments in this area of research have renewed interest and call for a re-examinatio...

journal_title：Photosynthesis research

authors： Stemler AJ

更新日期：2002-01-01 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

authors： Bovle FA,Keys AJ

更新日期：1982-06-01 00:00:00

abstract：:The factors governing quinone protein binding in the photosynthetic bacterium Rps. viridis are investigated via use of empirical intermolecular energy calculations using the GRID method (PJ Goodford (1985) J Med Chem 28: 849-854). A probe atom corresponding to a carbonyl oxygen atom is used to investigate regions exhi...

journal_title：Photosynthesis research

authors： O'Malley PJ,Braithwaite CJ

更新日期：1994-01-01 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

authors： Janssen LH,Van Hasselt PR

更新日期：1988-02-01 00:00:00

abstract：:Previous investigations have shown that increased source strength as a result of elevated CO(2) can alter the timing of the phases of change that occur in photosynthetic rates during dicot leaf ontogeny [Miller et al. (1997) Plant Physiol 115: 1195-1200]. To evaluate the converse situation of decreased source strength...

journal_title：Photosynthesis research

authors： Miller A,Schlagnhaufer C,Spalding M,Rodermel S

更新日期：2000-01-01 00:00:00

abstract：:Various techniques of electron microscopy (EM) such as ultrathin sectioning, freeze-fracturing, freeze-etching, negative staining and (cryo-)electron crystallography of two-dimensional crystals have been employed, since now, to obtain much of the structural information of the Photosystem II (PS II) pigment-protein com...

journal_title：Photosynthesis research

authors： Bumba L,Vácha FE

更新日期：2003-01-01 00:00:00

abstract：:The electron transport rates of photosystems II and I, amounts of electron carriers, coupling factor activity and photosynthetic rates were investigated in thylakoids isolated from pea plants grown under a wide range of light intensities (16 h light-8 h dark). The electron transport rates of PS II and PS I, as partial...

journal_title：Photosynthesis research

authors： Leong TY,Anderson JM

更新日期：1984-06-01 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

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

更新日期：2020-04-01 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

authors： Sano Y,Endo K,Tomo T,Noguchi T

更新日期：2015-08-01 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

authors： Suzuki T,Shioi Y

更新日期：2002-01-01 00:00:00

abstract：:The protonophoric uncouplers carbonyl cyanide m-chlorophenylhydrazone (CCCP), 2,3,4,5,6-pentachlorophenol (PCP) and 4,5,6,7-tetrachloro-2-trifluoromethylbenzimidazole (TTFB) inhibited the Hill reaction with K3[Fe(CN)6] (but not with SiMo) in chloroplast and cyanobacterial membranes (the I50 values were approx. 1-2, 4-...

journal_title：Photosynthesis research

authors： Samuilov VD,Renger G,Paschenko VZ,Oleskin AV,Gusev MV,Gubanova ON,Vasil'ev SS,Barsky EL

更新日期：1995-01-01 00:00:00

abstract：:The effects of Fe resupply to Fe-deficient plants have been investigated in hydroponically-grown sugar beet. In the short-term (24 h) after Fe resupply, major changes were observed, although de novo chlorophyll (Chl) synthesis had not begun yet. Approximately 50% of the zeaxanthin was converted into violaxanthin, wher...

journal_title：Photosynthesis research

authors： Larbi A,Abadía A,Morales F,Abadía J

更新日期：2004-01-01 00:00:00

abstract：:Cyanobacteria, algae, and plants produce dioxygen from water. Driven and clocked by light quanta, the catalytic Mn(4)Ca Tyrosine centre accumulates four oxidizing equivalents before it abstracts four electrons from water and liberates dioxygen and protons. Intermediates of this reaction cascade are short-lived (<100 m...

journal_title：Photosynthesis research

authors： Clausen J,Junge W

更新日期：2008-10-01 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 water-oxidation complex of Photosystem II (PS II) contains a heteronuclear cluster of 4 Mn atoms and a Ca atom. Ligands to the metal cluster involve bridging O atoms, and O and N atoms from amino acid side-chains of the D1 polypeptide of PS II, with likely additional contributions from water and CP43. Although mod...

journal_title：Photosynthesis research

authors： Sauer K,Yano J,Yachandra VK

更新日期：2005-01-01 00:00:00

abstract：:Photosynthesis powers our planet and is a source of inspiration for developing artificial constructs mimicking many aspects of the natural energy transducing process. In the complex machinery of photosystem II (PSII), the redox activity of the tyrosine Z (Tyrz) hydrogen-bonded to histidine 190 (His190) is essential fo...

journal_title：Photosynthesis research

authors： Odella E,Moore TA,Moore AL

更新日期：2021-01-11 00:00:00

abstract：:Moderately high temperature reduces photosynthetic capacities of leaves with large effects on thylakoid reactions of photosynthesis, including xanthophyll conversion in the lipid phase of the thylakoid membrane. In previous studies, we have found that leaf temperature of 40°C increased zeaxanthin accumulation in dark-...

journal_title：Photosynthesis research

authors： Zhang R,Kramer DM,Cruz JA,Struck KR,Sharkey TD

更新日期：2011-09-01 00:00:00

abstract：:Chlorophyll (Chl) b serves an essential function in accumulation of light-harvesting complexes (LHCs) in plants. In this article, this role of Chl b is explored by considering the properties of Chls and the ligands with which they interact in the complexes. The overall properties of the Chls, not only their spectral f...

journal_title：Photosynthesis research

authors： Hoober JK,Eggink LL,Chen M

更新日期：2007-11-01 00:00:00

abstract：:Recommendations are given for naming of genes coding for reaction center, antenna and electron transport proteins in green photosynthetic bacteria and heliobacteria. ...

journal_title：Photosynthesis research

authors： Bryant DA

更新日期：1994-07-01 00:00:00

abstract：:A detailed analysis of the periplasmic electron carriers of the photosynthetic bacterium Ectothiorhodospira sp. has been performed. Two low mid-point redox potential electron carriers, cytochrome c' and cytochrome c, are detected. A high potential iron-sulfur protein is the only high mid-point redox potential electron...

journal_title：Photosynthesis research

authors： Buche A,Picorel R,Moulis JM,Verméglio A

更新日期：2000-01-01 00:00:00

abstract：:A time line of important research relating to anoxygenic photosynthetic organisms is presented. The time line includes discoveries of organisms, metabolic capabilities, molecular complexes and genetic systems. It also pinpoints important milestones in our understanding of the structure, function, organization, assembl...

journal_title：Photosynthesis research

authors： Gest H,Blankenship RE

更新日期：2004-01-01 00:00:00

abstract：:Chloroplast NADP-dependent malate dehydrogenase (NADP-MDH, EC 1.1.1.82) is inactive in the dark and activated in the light via a reduction of specific disulfides by thiol-disulfide interchange with thioredoxin, reduced by the photosynthetic electron transfer. Compared to the constitutively active NAD-dependent forms, ...

journal_title：Photosynthesis research

authors： Miginiac-Maslow M,Lancelin JM

更新日期：2002-01-01 00:00:00

abstract：:Humic substances (HSs) can influence the growth and composition of freshwater phytoplankton assemblage. Since HSs contain many phenolic and quinonic moieties and cause growth reductions in eco-physiological field experiments, HSs are considered photosystem II herbicides. To test this specific mode of action in vivo an...

journal_title：Photosynthesis research

authors： Gilbert M,Bährs H,Steinberg CEW,Wilhelm C

更新日期：2018-09-01 00:00:00