(15)N and inhibitor studies on the photorespiratory nitrogen cycle in maize leaves.

abstract：:Dry weight and Relative Growth Rate of Lemna gibba were significantly increased by CO2 enrichment up to 6000 μl CO2 l(-1). This high CO2 optimum for growth is probably due to the presence of nonfunctional stomata. The response to high CO2 was less or absent following four days growth in 2% O2. The Leaf Area Ratio decr...

journal_title：Photosynthesis research

authors： Andersen IH,Dons C,Nilsen S,Haugstad MK

更新日期：1985-03-01 00:00:00

abstract：:The 3- and 7-formyl groups of chlorophyll-d (Chl-d) and bacteriochlorophyll-e (BChl-e), respectively, were regioselectively labeled with an isotopically stable oxygen-18 (¹⁸O) atom to give 3¹-¹⁸O-labeled Chl-d and 7¹-¹⁸O-labeled BChl-e (ca. 90% ¹⁸O) by exchanging the carbonyl oxygen atoms in the presence of acidic H₂ ...

journal_title：Photosynthesis research

authors： Morishita H,Mizoguchi T,Tamiaki H

更新日期：2010-09-01 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

authors： Crofts AR,Wang Z

更新日期：1989-01-01 00:00:00

abstract：:This study was conducted to more clearly define the physiological effects of PS II herbicides on chloroplast thylakoid membrane activity and composition. Barley (Hordeum vulgare L. cv Boone) was grown in hydroponic culture at 20°C in a growth chamber with a light intensity of 500 μmole photons m(-2) s(-1). Atrazine (2...

journal_title：Photosynthesis research

authors： De la Torre WR,Burkey KO

更新日期：1992-04-01 00:00:00

abstract：:Flash-induced absorbance measurements at 830 nm on both nanosecond and microsecond timescales have been used to characterise the effect of ultraviolet light on Photosystem II core particles. A combination of UV-A and UV-B, closely simulating the spectrum of sunlight below 350 nm, was found to have a primary effect on ...

journal_title：Photosynthesis research

authors： Post A,Lukins PB,Walker PJ,Larkum AW

更新日期：1996-07-01 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：:Peridinin-chlorophyll-protein (PCP), containing differently absorbing chlorophyll derivatives, are good models with which to study energy transfer among monomeric chlorophylls (Chls) by both bulk and single-molecule spectroscopy. They can be obtained by reconstituting the N-terminal domain of the protein (N-PCP) with ...

journal_title：Photosynthesis research

authors： Brotosudarmo TH,Mackowski S,Hofmann E,Hiller RG,Bräuchle C,Scheer H

更新日期：2008-02-01 00:00:00

abstract：:Analysis of leaf-level photosynthetic responses of 39 tree species grown in elevated concentrations of atmospheric CO2 indicated an average photosynthetic enhancement of 44% when measured at the growth [CO2]. When photosynthesis was measured at a common ambient [CO2], photosynthesis of plants grown at elevated [CO2] w...

journal_title：Photosynthesis research

authors： Gunderson CA,Wullschleger SD

更新日期：1994-03-01 00:00:00

abstract：:The early suggestion by Lozier and Butler (Photochem. Photobiol. 17, 133-137 (1973)) that EPR Signal II arises from radicals associated with the water-splitting process in PSII has been confirmed and extended over the intervening years. Recent work has identified the Signal II radicals, [Formula: see text] and [Formul...

journal_title：Photosynthesis research

authors： Chandrashekar TK,O'malley PJ,Rodriguez I,Babcock GT

更新日期：1986-01-01 00:00:00

abstract：:The kinetic and spectroscopic properties of the secondary electron acceptor A1 were determined by flash absorption spectroscopy at room and cryogenic temperatures in a Photosystem I (PS I) core devoid of the iron-sulfur clusters FX, FB and FA. It was shown earlier (Warren, P.V., Golbeck, J.H. and Warden, J.T. (1993) B...

journal_title：Photosynthesis research

authors： Brettel K,Golbeck JH

更新日期：1995-09-01 00:00:00

abstract：:Two lessons I have learned during my research career are the importance of following up unexpected observations and realizing that the most obvious interpretation of such observations can be rational but wrong. When you carry out an experiment there is usually an expectation that the result will fall within a range of...

journal_title：Photosynthesis research

authors： John Ellis R

更新日期：2004-01-01 00:00:00

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

authors： Sproviero EM,Newcomer MB,Gascón JA,Batista ER,Brudvig GW,Batista VS

更新日期：2009-11-01 00:00:00

abstract：:Plant terpenoids are among the most diverse group of naturally-occurring organic compounds known, and several are used in contemporary consumer products. Terpene synthase enzymes catalyze complex rearrangements of carbon skeleton precursors to yield thousands of unique chemical structures that range in size from the s...

journal_title：Photosynthesis research

authors： Davies FK,Jinkerson RE,Posewitz MC

更新日期：2015-03-01 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

authors： Bašinskaitė E,Butkus V,Abramavicius D,Valkunas L

更新日期：2014-07-01 00:00:00

abstract：:A new binding site for anions which inhibit the water oxidizing complex (WOC) of Photosystem II in spinach has been identified. Anions which bind to this site inhibit the flash-induced S2/S0 catalase reaction (2H2O2→2H2O+O2) of the WOC by displacing hydrogen peroxide. Using a mass spectrometer and gas permeable membra...

journal_title：Photosynthesis research

authors： Mano J,Kawamoto K,Dismukes GC,Asada K

更新日期：1993-01-01 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

authors： Holcomb CT,Knox RS

更新日期：1996-11-01 00:00:00

abstract：:Biohybrid light-harvesting architectures can be constructed that employ native-like bacterial photosynthetic antenna peptides as a scaffold to which synthetic chromophores are attached to augment overall spectral coverage. Synthetic bacteriochlorins are attractive to enhance capture of solar radiation in the photon-ri...

journal_title：Photosynthesis research

authors： Jiang J,Reddy KR,Pavan MP,Lubian E,Harris MA,Jiao J,Niedzwiedzki DM,Kirmaier C,Parkes-Loach PS,Loach PA,Bocian DF,Holten D,Lindsey JS

更新日期：2014-11-01 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：:Taro and cocoyam were grown outdoors in either full sun or under 40% shade. Leaves were tagged as they emerged and the effect of leaf age on net CO2 assimilation rate (A) was determined. The effects of shading on A, transpiration (E), stomatal conductance for CO2 (gc) and H2O (gs), and water use efficiency (WUE) were ...

journal_title：Photosynthesis research

authors： Schaffer B,O'Hair SK

更新日期：1987-01-01 00:00:00

abstract：:The discovery of a new maize (Zea mays L.) transposon system, Mutator, and the cloning of the 1.4 kilobase transposon, Mul, have made feasible the isolation of nuclear photosynthetic genes which are recognized only by their mutant phenotype. Mutant maize plants which express a high chlorophyll fluorescent (hcf) phenot...

journal_title：Photosynthesis research

authors： Cook WB,Miles D

更新日期：1988-10-01 00:00:00

abstract：:A chloroplast preparation was extracted from squash (Cucurbita pepo (L.) var. Senator). Enrichment of intact chloroplasts was achieved by continuous free-flow electrophoresis. The addition of monoterpenes, detergent and free fatty acids changed the elecrophoretic separation pattern characteristically. Monoterpene-depe...

journal_title：Photosynthesis research

authors： Klingler H,Frosch S,Wagner E

更新日期：1991-06-01 00:00:00

abstract：:Carbohydrate feedstocks are at the root of bioindustrial production and are needed in greater quantities than ever due to increased prioritization of renewable fuels with reduced carbon footprints. Cyanobacteria possess a number of features that make them well suited as an alternative feedstock crop in comparison to t...

journal_title：Photosynthesis research

authors： Hays SG,Ducat DC

更新日期：2015-03-01 00:00:00

abstract：:The xanthophyll cycle represents one of the important photoprotection mechanisms in plant cells. In the present review, we summarize current knowledge about the violaxanthin cycle of vascular plants, green and brown algae, and the diadinoxanthin cycle of the algal classes Bacillariophyceae, Xanthophyceae, Haptophyceae...

journal_title：Photosynthesis research

authors： Goss R,Jakob T

更新日期：2010-11-01 00:00:00

abstract：:Modified forms of the D1 protein with deletions in lumen-exposed regions, were constructed in the cyanobacterium Synechocystis 6803 using site-directed mutagenesis. Integration and stability of the mutated D1 proteins in the thylakoid membrane were studied by immunoblot and pulse-chase analyses. It was found that in Δ...

journal_title：Photosynthesis research

authors： Salih G,Wiklund R,Tyystjärvi T,Mäenpää P,Gerez C,Jansson C

更新日期：1996-08-01 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：:With this Tribute, we remember and honor Thomas John (Tom) Wydrzynski. Tom was a highly innovative, independent and committed researcher, who had, early in his career, defined his life-long research goal. He was committed to understand how Photosystem II produces molecular oxygen from water, using the energy of sunlig...

journal_title：Photosynthesis research

authors： Conlan B,Govindjee,Messinger J

更新日期：2019-06-01 00:00:00

abstract：:Photosynthesis was well-established on the earth at least 3.5 thousand million years ago, and it is widely believed that these ancient organisms had similar metabolic capabilities to modern cyanobacteria. This requires that development of two photosystems and the oxygen evolution capability occurred very early in the...

journal_title：Photosynthesis research

authors： Blankenship RE

更新日期：1992-01-01 00:00:00

abstract：:The major light-harvesting system in cyanobacteria, the phycobilisome, is an essential component of the photosynthetic apparatus that regulates the utilization of the natural light source-the Sun. Earlier works revealed that the thylakoid membrane composition and its physical properties might have an important role in...

journal_title：Photosynthesis research

authors： Vajravel S,Laczkó-Dobos H,Petrova N,Herman É,Kovács T,Zakar T,Todinova S,Taneva S,Kovács L,Gombos Z,Tóth T,Krumova S

更新日期：2020-08-01 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

authors： Talts E,Oja V,Rämma H,Rasulov B,Anijalg A,Laisk A

更新日期：2007-10-01 00:00:00

abstract：:The oxygen production of dark-adapted Photosystem II upon illumination by a series of single-turnover flashes shows a damped period four oscillation with flash number. The damping is attributed to 'misses' resulting from a statistical probability that a reaction center fails to produce a stable charge separation after...

journal_title：Photosynthesis research

authors： de Wijn R,van Gorkom HJ

更新日期：2002-01-01 00:00:00