Abstract：
:The fluorescence kinetics of both intact needles and isolated chloroplasts of summer active and winter stressed Pinus sylvestris were measured at both room temperature and 77 K. It was confirmed that winter stress inhibited the photochemical capacity of photosystem II but also that winter stress caused the strongest inhibition of the electron transport at the site where the plastoquinone pool is reduced. Parallel analyses of the fluorescence characteristics of photosystem II (F693) and photosystem I (F729) during photosystem II trap closure furthermore revealed that the yield of spillover of excitation energy from photosystem II to photosystem I decreased upon winter stress. We suggest that this is because of an increased radiationless decay of excitation energy both at the reaction center and antennae levels of photosystem II. There is, however, also a possibility that the decreased yield of spill-over is accentuated by a partial detachment of the light harvesting chlorophyll a/b complex from photosystem II upon winter stress.
journal_name
Photosynth Resjournal_title
Photosynthesis researchauthors
Oquist G,Ogren Edoi
10.1007/BF00032919subject
Has Abstractpub_date
1985-01-01 00:00:00pages
19-30issue
1eissn
0166-8595issn
1573-5079journal_volume
7pub_type
杂志文章abstract：:Energy transfer of the light harvesting complex LHC-II trimer, extracted from spinach, was studied in the Q(y) region at room temperature by femtosecond transient absorption spectroscopy. Configuration interaction exciton method [Linnanto et al. (1999) J Phys Chem B 103: 8739-8750] and 2.72 A structural information re...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-005-9004-1
更新日期：2006-03-01 00:00:00
abstract：:The origin of the extraordinary high redox potential of P680, the primary electron donor of Photosystem II, is still unknown. Photochemically induced dynamic nuclear polarisation (photo-CIDNP) 13C magic-angle spinning (MAS) NMR is a powerful method to study primary electron donors. In order to reveal the electronic st...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-005-0411-0
更新日期：2005-06-01 00:00:00
abstract：:The possible origins of the different fluorescence decay components in green plants are discussed in terms of a random walk and Butler's bipartite model. The interaction of the excitations with the photosystem II reaction centers and, specifically, the regeneration of theses excitations by charge recombination within ...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00118288
更新日期：1986-01-01 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
pub_type： 杂志文章
doi：10.1007/BF00028785
更新日期：1992-02-01 00:00:00
abstract：:Unique light-harvesting antennas in the green sulfur bacterium Chlorobaculum tepidum, called chlorosomes, consist of self-aggregates of bacteriochlorophyll (BChl) c. In the biosynthesis of BChl c, BciC demethoxycarbonylase removes the C132-methoxycarbonyl group to facilitate the self-aggregation of BChl c. We previous...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-018-0573-1
更新日期：2019-03-01 00:00:00
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
pub_type： 杂志文章
doi：10.1007/BF02184154
更新日期：1994-07-01 00:00:00
abstract：:Electron transfer pathways in photosynthesis involve interactions between membrane-bound complexes such as reaction centres with an extrinsic partner. In this study, the biological specificity of electron transfer between the reaction centre-light-harvesting 1-PufX complex and its extrinsic electron donor, cytochrome ...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-013-9812-7
更新日期：2014-05-01 00:00:00
abstract：:This personal perspective records research experiences in chemistry and biology at four German universities, two before and two after World War II. The research themes came from cytophysiology of green unicellular algae, in particular their photosynthesis. The function of inorganic ions in photosynthesis and dark resp...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00034771
更新日期：1994-06-01 00:00:00
abstract：:Brownian Dynamics (BD) computer simulations were used to study electrostatic interactions between turnip cytochrome f (cyt f) and spinach plastocyanin (PC). Three different spinach PC structures were studied: The X-ray crystal structure of Xue and coworkers [(1998) Protein Sci 7:2099-2105] and the NMR structure of Mus...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-007-9192-y
更新日期：2007-11-01 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
pub_type： 杂志文章
doi：10.1007/BF00046751
更新日期：1993-01-01 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
pub_type： 杂志文章
doi：10.1023/B:PRES.0000030448.24695.ec
更新日期：2004-01-01 00:00:00
abstract：:The world is facing energy crisis and environmental issues due to the depletion of fossil fuels and increasing CO2 concentration in the atmosphere. Growing microalgae can contribute to practical solutions for these global problems because they can harvest solar energy and capture CO2 by converting it into biofuel usin...
journal_title：Photosynthesis research
pub_type： 杂志文章,评审
doi：10.1007/s11120-013-9828-z
更新日期：2013-11-01 00:00:00
abstract：:In higher plants, photosystem II (PSII) is a multi-subunit pigment-protein complex embedded in the thylakoid membranes of chloroplasts, where it is present mostly in dimeric form within the grana. Its light-harvesting antenna system, LHCII, is composed of trimeric and monomeric complexes, which can associate in variab...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-016-0216-3
更新日期：2016-12-01 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
pub_type： 杂志文章,评审
doi：10.1007/s11120-018-0567-z
更新日期：2018-12-01 00:00:00
abstract：:The photosynthetic green sulfur bacterium Chlorobaculum (Cba.) tepidum produces bacteriochlorophyll (BChl) c pigments bearing a chiral 1-hydroxyethyl group at the 3-position, which self-aggregate to construct main light-harvesting antenna complexes, chlorosomes. The secondary alcoholic hydroxy group is requisite for c...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-016-0220-7
更新日期：2016-12-01 00:00:00
abstract：:The previous work in our lab showed that the spinach chloroplast ATP synthase epsilon mutant with 3 amino acid residues deleted from the N-terminus had much lower ability to inhibit ATP hydrolysis and block proton leakage in comparison to a mutant with 1 or 2 residues deleted from the N-terminus. The present study aim...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-004-6554-6
更新日期：2005-01-01 00:00:00
abstract：:The activity of ribulose-1,5-bisphosphate carboxylase/oxygenase fromEuglena gracilis decays steadily when exposed to agents that induce oxidative modification of cysteine residues (Cu(2+), benzofuroxan, disulfides, arsenite, oxidized ascorbate). Inactivation takes place with a concomitant loss of cysteine sulfhydryl g...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF02185411
更新日期：1993-01-01 00:00:00
abstract：:The main objective of the present review is to provide a compilation of published data of the effects of several climatic conditions on Rubisco, particularly its activity, state of activation, and concentration, and its influence on leaf gas exchange and photosynthesis. The environmental conditions analyzed include dr...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-013-9861-y
更新日期：2013-11-01 00:00:00
abstract：:Plants are exposed to a temporally and spatially heterogeneous environment, and photosynthesis is well adapted to these fluctuations. Understanding of the complex, non-linear dynamics of photosynthesis in fluctuating light requires novel-modeling approaches that involve not only the primary light and dark biochemical ...
journal_title：Photosynthesis research
pub_type： 杂志文章,评审
doi：10.1007/s11120-007-9178-9
更新日期：2007-07-01 00:00:00
abstract：:The relationship between the redox state of P700, the primary donor of PS I, monitored using absorbance changes at 830 nm and photochemical energy storage in PS I reaction centers assayed with the photoacoustic method (PA) was studied in isolated PS I submembrane particles aspirated onto nitrocellulose filters. Severa...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1023/A:1021237026500
更新日期：2002-01-01 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
pub_type： 杂志文章
doi：10.1007/BF00041796
更新日期：1983-01-01 00:00:00
abstract：:Around 1960 experiments of Arnold and Clayton, Chance and Nishimura and Calvin and coworkers demonstrated that the primary photosynthetic electron transfer processes are not abolished by cooling to cryogenic temperatures. After a brief historical introduction, this review discusses some aspects of electron transfer in...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00041000
更新日期：1996-05-01 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
pub_type： 杂志文章,评审
doi：10.1007/s11120-015-0154-5
更新日期：2015-12-01 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
pub_type： 杂志文章
doi：10.1007/s11120-007-9246-1
更新日期：2008-02-01 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
pub_type： 杂志文章
doi：10.1007/s11120-012-9777-y
更新日期：2012-10-01 00:00:00
abstract：:Dan Arnon, Bob Whatley, Mary Belle Allen, and their colleagues, were the first to obtain evidence for 'complete photosynthesis by isolated chloroplasts' albeit at rates which were 1% or less of those displayed by the intact leaf. By the 1960s, partly in the hope of confirming full functionality, there was a perceived ...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1023/A:1024962328483
更新日期：2003-01-01 00:00:00
abstract：:Several models have been proposed to interpret the mechanism of proton-pumping associated with the electron transfer reactions in the cytochrome b/f complex. Energetics considerations suggest that the proton pump is coupled to the oxidation of cytochrome b by plastoquinone. Experiments performed in living cells under ...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00029737
更新日期：1986-01-01 00:00:00
abstract：:Four Indica and five Japonica varieties of rice (Oryza sativa L.) were examined to elucidate their differences in photosynthetic activity and dark respiratory rate as influenced by leaf nitrogen levels and temperatures. The photosynthetic rates of single leaf showed correlations with total nitrogen and soluble protein...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00032321
更新日期：1987-01-01 00:00:00
abstract：:Leaf variegation mutants constitute a unique group of chloroplast development mutants and are ideal genetic materials to dissect the regulation of chloroplast development. We have utilized the Arabidopsis yellow variegated (var2) mutant and genetic suppressor analysis to probe the mechanisms of chloroplast development...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-015-0195-9
更新日期：2016-03-01 00:00:00
abstract：:The effect of acetate metabolism on the light energy distribution between the two photosystems, on the PS II/PS I stoichiometry and on the expression of psbA and psbB and psaA genes was investigated in the green alga, Chlamydobotrys stellata during autotrophic (CO(2)), mixotrophic (CO(2) plus acetate) and photoheterot...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1023/A:1010650532693
更新日期：2000-01-01 00:00:00
