Excitation energy transfer in the LHC-II trimer: a model based on the new 2.72 A structure.

abstract：:Oxygen evolving photosystem II particles were exposed to 100 and 250 W m(-2) white light at 20°C under aerobic, anaerobic and strongly reducing (presence of dithionite) conditions. Three types of photoinactivation processes with different kinetics could be distinguished: (1) The fast process which occurs under strongl...

journal_title：Photosynthesis research

authors： Setlík I,Allakhverdiev SI,Nedbal L,Setlíková E,Klimov VV

更新日期：1990-01-01 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：:In thylakoid membranes, several peptides of high MW† are present which may interfere with the study of CP1's components. Modifying Cleveland's technique [7] for limited proteolysis, we have characterized the polypeptides found in the 60 kD region. Some may result from incomplete washing of the CF1 while others come fr...

journal_title：Photosynthesis research

authors： Lagoutte B,Setif P,Duranton J

更新日期：1980-03-01 00:00:00

abstract：:The quenching of variable fluorescence yield (qN) and the quenching of dark level fluorescence yield (q0) directly atributable to high-energy-state fluorescence quenching (qE) was studied to distinguish between energy dissipation in the antenna and light harvesting complexes (antenna quenching) and energy dissipation ...

journal_title：Photosynthesis research

authors： Rees D,Noctor GD,Horton P

更新日期：1990-09-01 00:00:00

abstract：:Artificial aggregates of bacteriochlorophyllc (BChlc) were formed in an aqueous medium in the presence of a lipid, monogalactosyl diglyceride (MGDG), and the optical properties of those aggregates were studied by absorption and circular dichroism (CD) mainly. Four BChlc homologs, ([E,E]BChlc F, [P,E]BChlc F, [E,M]BChl...

journal_title：Photosynthesis research

authors： Uehara K,Mimuro M,Ozaki Y,Olson JM

更新日期：1994-07-01 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

authors： Coleman WJ,Govindjee

更新日期：1987-09-01 00:00:00

abstract：:The effect of light on the metabolism of ammonia was studied by subjecting detached maize leaves to 150 or 1350 μmol m(-2) s(-1) PAR during incubation with the leaf base in 2 mM (15)NH4Cl. After up to 60 min, leaves were extracted. Ammonia, glutamine, glycine, serine, alanine, and aspartate were separated by isotherma...

journal_title：Photosynthesis research

authors： Klaus RE,Berger MG,Fock HP

更新日期：1985-09-01 00:00:00

abstract：:The storage of light energy in chemical form through photosynthesis is the key process underlying life as we know it. To utilize photosynthates efficiently as structural materials or as fuel to drive endergonic processes, they have to be transported from where they are produced to where they are needed. In this primer...

journal_title：Photosynthesis research

authors： Knoblauch M,Peters WS

更新日期：2013-11-01 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：:We present a theoretical study of excitation dynamics in the chlorosome antenna complex of green photosynthetic bacteria based on a recently proposed model for the molecular assembly. Our model for the excitation energy transfer (EET) throughout the antenna combines a stochastic time propagation of the excitonic wave ...

journal_title：Photosynthesis research

authors： Fujita T,Huh J,Saikin SK,Brookes JC,Aspuru-Guzik A

更新日期：2014-06-01 00:00:00

abstract：:C4 photosynthesis is a complex trait that has a high degree of natural variation, involving anatomical and biochemical changes relative to the ancestral C3 state. It has evolved at least 66 times across a variety of lineages and the evolutionary route from C3 to C4 is likely conserved but not necessarily genetically i...

journal_title：Photosynthesis research

authors： Covshoff S,Burgess SJ,Kneřová J,Kümpers BM

更新日期：2014-02-01 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：: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：: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

authors： Frederick JR,Alm DM,Hesketh JD,Below FE

更新日期：1990-07-01 00:00:00

abstract：:Chlorophyll fluorescence imaging has been used to analyse the response elicited in Phaseolus vulgaris after inoculation with Pseudomonas syringae pv. phaseolicola 1448A (compatible interaction) and P. syringae pv. tomato DC3000 (incompatible interaction). With the aim of modulating timing of symptom development, diffe...

journal_title：Photosynthesis research

authors： Rodríguez-Moreno L,Pineda M,Soukupová J,Macho AP,Beuzón CR,Barón M,Ramos C

更新日期：2008-04-01 00:00:00

abstract：:Photosynthetic organisms normally endeavor to optimize the efficiency of their light-harvesting apparatus. However, here we describe two bacterial isolates belonging to the genera Allochromatium and Thiocapsa that demonstrate a novel adaptation by optimizing their external growth conditions at the expense of photosynt...

journal_title：Photosynthesis research

authors： Herbert RA,Gall A,Maoka T,Cogdell RJ,Robert B,Takaichi S,Schwabe S

更新日期：2008-02-01 00:00:00

abstract：:In this paper we compared the pigment composition, photochemical activity, chloroplast ultrastructure, thylakoid membrane polypeptide composition and ribosomal content of wild-type and seven light-sensitive mutants of Chlamydomonas reinhardii.All the mutants had low chlorophyll and carotenoid content compared to wild-...

journal_title：Photosynthesis research

authors： Gyurján I,Nagy AH,Frdős G,Paless G,Keresztes A,Kovacs P,Szigeti Z

更新日期：1982-01-01 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：: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：:Thylakoids are complex sub-organellar membrane systems whose role in photosynthesis makes them critical to life. Thylakoids require the coordinated expression of both nuclear- and plastid-encoded proteins to allow rapid response to changing environmental conditions. Transport of cytoplasmically synthesized proteins to...

journal_title：Photosynthesis research

authors： New CP,Ma Q,Dabney-Smith C

更新日期：2018-12-01 00:00:00

abstract：:The engagement of different photoprotective mechanisms in the cells of the carotenogenic astaxanthin-accumulating chlorophyte Haematococcus pluvialis (i) under favorable conditions, (ii) in the course of stress-induced haematocyst formation and (iii) during recovery from the stress was studied. To this end, we followe...

journal_title：Photosynthesis research

authors： Chekanov K,Lukyanov A,Boussiba S,Aflalo C,Solovchenko A

更新日期：2016-06-01 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：: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：:A high CO2-requiring mutant of Synechocystis PCC6803 (G3) capable of Ci transport but unable to utilize the intracellular Ci pool for photosynthesis was constructed. A DNA clone of 6.1 kbp that transforms the G3 mutant to the wild-type phenotype was isolated from a Synechocystis PCC6803 genomic library. Complementatio...

journal_title：Photosynthesis research

authors： Ogawa T,Amichay D,Gurevitz M

更新日期：1994-02-01 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：: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：: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：:Relationships between induced high leaf intercellular CO₂ concentrations, leaf K⁺ and NO₃⁻ ion movement and early fruit formation under macronutrient limitation are not well understood. We examined the effects and interactions of reduced K/N input treatments on leaf intercellular CO₂, photosynthesis rate, carboxylatio...

journal_title：Photosynthesis research

authors： Li H,Li T,Fu G,Katulanda P

更新日期：2013-07-01 00:00:00

abstract：:Isolated mesophyll cells from darkened leaves of the C(4) plant Digitaria sanguinalis keep functional plasmodesmata that allow the free exchange of low molecular mass compounds with the surrounding medium. This cell suspension system has been used to measure C(4) PEPC activity in situ using a spectrophotometric assay....

journal_title：Photosynthesis research

authors： Pierre JN,Prieto JL,Gadal P,Vidal J

更新日期：2004-01-01 00:00:00

abstract：:We present here the life and work of Shmuel Malkin (1934-2017), an accomplished scientist and a gifted musician who touched the lives of many around the world. His early scientific work addressed the dynamics of light harvesting and electron transport in photosynthesis. Later, he used photoacoustic and photothermal me...

journal_title：Photosynthesis research

authors： Herbert SK,Siderer Y,Govindjee

更新日期：2018-07-01 00:00:00