Energy transfer and pigment composition in three chlorophyll b-containing light-harvesting complexes isolated from Mantoniella squamata (Prasinophyceae), Chlorella fusca (Chlorophyceae) and Sinapis alba.

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

authors： Hallahan BJ,Purton S,Ivison A,Wright D,Evans MC

更新日期：1995-11-01 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：: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：:Fluorescence and electron paramagnetic resonance measurements were used to study selenium influence on photosystem activity in rape seedlings affected by Cd stress. Water cultures containing Hoagland nutrients were supplemented with 400 microM of CdCl(2), 2 microM of Na(2)SeO(4) and a mixture of both CdCl(2) and Na(2)...

journal_title：Photosynthesis research

authors： Filek M,Kościelniak J,Łabanowska M,Bednarska E,Bidzińska E

更新日期：2010-07-01 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：:A guided tour through much of photosynthesis research as I saw it, 1936-2001, is presented here. For earlier perspectives, see Myers 1974 (Plant Physiol 54: 420-426) and 1996 (Photosynth Res 50: 195-208). ...

journal_title：Photosynthesis research

authors： Myers J

更新日期：2002-01-01 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

authors： Chu HA,Gardner MT,Hillier W,Babcock GT

更新日期：2000-01-01 00:00:00

abstract：:Recently, a number of techniques, some of them relatively new and many often used in combination, have given a clearer picture of the dynamic role of electron transport in Photosystem I of photosynthesis and of coupled cyclic photophosphorylation. For example, the photoacoustic technique has detected cyclic electron t...

journal_title：Photosynthesis research

authors： Fork DC,Herbert SK

更新日期：1993-06-01 00:00:00

abstract：:P700 enriched fractions were isolated from two brown algae and one diatom using sucrose density centrifugation after digitinin solubilization. They had a Chl a/P700 ratio of about 250 to 375 according to the species, they were enriched in long-wavelength absorbing Chl a and exhibited a fluorescence emission maximum at...

journal_title：Photosynthesis research

authors： Berkaloff C,Caron L,Rousseau B

更新日期：1990-02-01 00:00:00

abstract：:We have used antibodies generated against synthetic peptides to determine the topology of the 43 kD chlorophyll a binding protein (CP 43) of Photosystem II. Based on the pattern of proteolytic fragments detected (on western blots) by peptide specific antibodies, a six transmembrane span topological model, with the ami...

journal_title：Photosynthesis research

authors： Sayre RT,Wrobel-Boerner EA

更新日期：1994-04-01 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：:This review describes the progress in our understanding of the structure of the Mn complex in Photosystem II over the last two decades. Emphasis is on the research from our laboratory, especially the results from X-ray absorption spectroscopy, low temperature electron paramagnetic resonance and electron spin echo enve...

journal_title：Photosynthesis research

authors： Klein MP,Sauer K,Yachandra VK

更新日期：1993-01-01 00:00:00

abstract：:Recent magnetic-resonance work on YŻ suggests that this species exhibits considerable motional flexibility in its functional site and that its phenol oxygen is not involved in a well-ordered hydrogen-bond interaction (Tang et al., submitted; Tommos et al., in press). Both of these observations are inconsistent with a ...

journal_title：Photosynthesis research

authors： Hoganson CW,Lydakis-Simantiris N,Tang XS,Tommos C,Warncke K,Babcock GT,Diner BA,McCracken J,Styring S

更新日期：1995-11-01 00:00:00

abstract：:We investigated several photosynthetic parameters of a virescent mutant of durum wheat and of its wild-type. Electron transport rate to ferricyanide was the same in the two genotypes when expressed on leaf area basis while O2 evolution of the leaf tissue in saturating light and CO2 was slightly higher in the yellow ge...

journal_title：Photosynthesis research

authors： Marco GD,D'Ambrosio N,Giardi MT,Massacci A,Tricoli D

更新日期：1989-08-01 00:00:00

abstract：:In this report we demonstrate sulfite interaction with oxygen and PSII electron acceptors (ferricyanide and para-benzoquinone) during measurement of oxygen evolution in chloroplasts. Redox potentials of oxygen, ferricyanide and para-benzoquinone allow them to compete for sulfite. Without taking this into account, sulf...

journal_title：Photosynthesis research

authors： Beauregard M,Popovic R

更新日期：1987-01-01 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

authors： Milks KJ,Danielsen M,Persson S,Jensen ON,Cox RP,Miller M

更新日期：2005-11-01 00:00:00

abstract：:Joan Mary Anderson, known to most people as Jan, was born on May 12, 1932 in Dunedin, New Zealand. She died on August 28, 2015 in Canberra, Australia. To celebrate her life, we present here a brief biography, some comments on her discoveries in photosynthesis during a career spanning more than half a century, and remi...

journal_title：Photosynthesis research

authors： Chow WS,Horton P,Barrett M,Osmond CB

更新日期：2016-08-01 00:00:00

abstract：:Free ribulose hisphosphate (RuBP(4-)) rather than its magnesium complex (RuBP-Mg(2-)) was the apparent substrate for spinach ribulose bisphosphate carboxylase/oxygenase. The apparent Km for total RuBP (pH 8.0 at 30° C) increased with increasing Mg(2+) concentrations from 11.6 μM at 13.33 mM Mg(2+) to 32.6 μM at 40.33 ...

journal_title：Photosynthesis research

authors： Roach DJ,McFadden BA

更新日期：1983-01-01 00:00:00

abstract：:Structural analogues of the NADP(+) were studied as potential coenzymes and inhibitors for NADP(+) dependent malic enzyme from Zea mays L. leaves. Results showed that 1, N(6)-etheno-nicotinamide adenine dinucleotide phosphate (∈ NADP(+)), 3-acetylpyridine-adenine dinucleotide phosphate (APADP(+)), nicotinamide-hypoxan...

journal_title：Photosynthesis research

authors： Spampinato CP,Paneth P,O'Leary MH,Andreo CS

更新日期：1991-05-01 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

authors： Van Gorkom HJ

更新日期：1985-01-01 00:00:00

abstract：:Historically, two main concepts guided research into possible mechanisms of light-induced atomic rearrangements in oxygenic photosynthesis: Photodecomposition of CO2 and photodecomposition of water. Both concepts envisioned photoinduced transfers of cumbersome whole atoms and not, as is currently held, photoinduced el...

journal_title：Photosynthesis research

authors： Arnon DI

更新日期：1991-09-01 00:00:00

abstract：:The crystallization of a given protein is a hard task being even more complicated when the protein shows a hydrophobic behavior. In the case of photosynthetic proteins, the difficulty of the experiments increased due to the high light sensitivity. Aqueous solutions of photosystem II core complex (OEC PSII) of Pisum sa...

journal_title：Photosynthesis research

authors： Kutá Smatanová I,Gavira JA,Rezácová P,Vácha F,García-Ruiz JM

更新日期：2006-12-01 00:00:00

abstract：:Light-induced reaction dynamics of isolated photosynthetic membranes obtained from wild-type (WT) and reaction center (RC)-subunit deletion strains SPUHK1 (an H-subunit deletion mutant) and SK Delta LM (an (L+M) deletion mutant) of the purple non-sulphur bacterium Rhodospirillum rubrum have been investigated by femtos...

journal_title：Photosynthesis research

authors： Amarie S,Lupo D,Lenz MO,Saegesser R,Ghosh R,Wachtveitl J

更新日期：2010-03-01 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

authors： Michoux F,Takasaka K,Boehm M,Komenda J,Nixon PJ,Murray JW

更新日期：2012-02-01 00:00:00

abstract：:The chlorophyll content is an important experimental parameter in agronomy and plant biology research. In this report, we explore the feasibility of determining total concentration of extracts containing chlorophyll a and chlorophyll b by chlorophyll fluorescence. We found that an excitation at 457 nm results in the s...

journal_title：Photosynthesis research

authors： Lamb JJ,Eaton-Rye JJ,Hohmann-Marriott MF

更新日期：2012-10-01 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 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：:Six chlorophyll-protein complexes are isolated from thylakoid membranes of Bryopsis corticulans by dodecyl-beta-D: -maltoside polyacrylamide gel electrophoresis. Unlike that of higher plants, the 77 K fluorescence emission spectrum of the CP1 band, the PSI core complexes of B. corticulans, presents two peaks, one at 6...

journal_title：Photosynthesis research

authors： Chen G,Niu X,Chen X,Li L,Kuang T,Li S

更新日期：2008-04-01 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

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