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, whereas the actual Photosystem II (PS II) efficiency increased by 69% and non-photochemical quenching (NPQ) and the amount of thermally dissipated energy decreased markedly (by 47% and 40%, respectively). At the same time, photosynthetic rate increased approximately by 50%. From one to two days after Fe resupply, there was a gradual increase in the leaf concentrations of Chl and other photosynthetic pigments, accompanied by a further conversion of zeaxanthin into violaxanthin, increases in actual PS II efficiency and photosynthetic rates and decreases in NPQ and the amount of thermally dissipated energy. At 72-96 h after Fe resupply, leaf pigment concentrations, photosynthetic rates and actual PS II efficiency had increased further, although both photosynthetic rate and leaf pigment concentrations were still lower than those found in Fe-sufficient leaves. Good correlations were observed between the amount of light thermally dissipated by the PS II antenna, NPQ and the antheraxanthin + zeaxanthin concentration after Fe resupply, confirming the photoprotective role of the xanthophyll cycle in Fe-deficient sugar beet leaves. Similar correlations were observed for lutein, suggesting a possible role of this pigment in photoprotection.
journal_name
Photosynth Resjournal_title
Photosynthesis researchauthors
Larbi A,Abadía A,Morales F,Abadía Jdoi
10.1023/B:PRES.0000011919.35309.5esubject
Has Abstractpub_date
2004-01-01 00:00:00pages
59-69issue
1eissn
0166-8595issn
1573-5079journal_volume
79pub_type
杂志文章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
pub_type: 杂志文章
doi:10.1007/BF00020428
更新日期:1995-11-01 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
pub_type: 杂志文章
doi:10.1007/s11120-007-9286-6
更新日期:2008-04-01 00:00:00
abstract::Ongoing work has led to the identification of most of the biochemical steps in carotenoid biosynthesis in chlorophototrophic bacteria. In carotenogenesis, a relatively small number of modifications leads to a great diversity of carotenoid structures. This review examines the individual steps in the pathway, discusses ...
journal_title:Photosynthesis research
pub_type: 杂志文章,评审
doi:10.1007/s11120-008-9312-3
更新日期:2008-08-01 00:00:00
abstract::Treatment of lyophilized thylakoid membranes of the thermophilic cyanobacterium Synechococcus sp. with n-heptane for 6 h resulted in marked changes in the pattern of photosystem I reaction center complexes resolved by sodium dodecylsulfate-polyacrylamide gel electrophoresis. CP1-a, which consists of two large subunits...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00117671
更新日期:1987-01-01 00:00:00
abstract::Significance of molecular crowding in grana thylakoids of higher plants on photosystem II function was studied by 'titrating' the naturally high protein density by fusing unilamellar liposomes of the native lipid mixture with isolated grana membranes (BBY). The incorporation of lipids was monitored by equilibrium dens...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-007-9253-2
更新日期:2008-02-01 00:00:00
abstract::The Fabaceae tree Butea monosperma (TAUB.; syn. Erythrina monosperma (LAM.)) is widely distributed in Central and West-India. We studied it at three sites, i.e. at two locations with contrasting exposure (NE and SW, respectively) in a small mountain range with poor soil on highly drained rocky slopes and at a third lo...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-012-9770-5
更新日期:2012-09-01 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
pub_type: 传,历史文章,杂志文章
doi:10.1007/s11120-018-0606-9
更新日期:2019-06-01 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
pub_type: 杂志文章
doi:10.1023/B:PRES.0000030427.35645.5c
更新日期:2004-01-01 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
pub_type: 杂志文章
doi:10.1007/BF00035259
更新日期:1988-02-01 00:00:00
abstract::Exposure of the red alga Porphyra perforata or leaves of Phytolacca americana and Echinodorus sp. to white light equivalent to full sunlight for short periods induced large decreases of variable fluorescence measured at 695 nm at 77K. This change was not produced by photoinhibition but rather appeared to result from a...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00118298
更新日期:1986-01-01 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::Data on cadmium accumulation in chloroplasts of terrestrial plants are scarce and contradictory. We introduced CdSO4 in hydroponic media to the final concentrations 80 and 250 μM and studied the accumulation of Cd in chloroplasts of Hordeum vulgare and Zea mays. Barley accumulated more Cd in the chloroplasts as compar...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-014-0047-z
更新日期:2015-08-01 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::The nature of interaction of cytochrome b-559 high potential (HP) with electron transport on the reducing side of photosystem II was investigated by measuring the susceptibility of cytochrome b-559HP to 3-(3,4-dichlorophenyl)-1,1-dimethylurea (DCMU) under different conditions. Submicromolar DCMU concentrations decreas...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00035839
更新日期:1991-03-01 00:00:00
abstract::The problem of predicting the kinetics of proton efflux and the decay of the internal proton concentration for vesicles containing one or more buffers for which the internal proton concentration is initially higher than that of the surrounding medium is examined. An analytical solution is derived that describes the ti...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00019150
更新日期:1987-01-01 00:00:00
abstract::In polyploid plants the photosynthetic rate per cell is correlated with the amount of DNA per cell. The photosynthetic rate per unit leaf area is the product of the rate per cell times the number of photosynthetic cells per unit area. Therefore, the photosynthetic rate per unit leaf area will increase if there is a le...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00014744
更新日期:1993-02-01 00:00:00
abstract::Prior to the 1960s, the model for the molecular structure of cell membranes consisted of a lipid bilayer held in place by a thin film of electrostatically-associated protein stretched over the bilayer surface: (the Danielli-Davson-Robertson "unit membrane" model). Andrew Benson, an expert in the lipids of chloroplast ...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-007-9159-z
更新日期:2007-05-01 00:00:00
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::Photosynthetic electron transfer has been examined in whole cells, isolated membranes and in partially purified reaction centers (RCs) of Roseicyclus mahoneyensis, strain ML6 and Porphyrobacter meromictius, strain ML31, two species of obligate aerobic anoxygenic phototrophic bacteria. Photochemical activity in strain ...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-011-9718-1
更新日期:2012-02-01 00:00:00
abstract::When excited by ultraviolet radiation, leaves of a great number of species of higher plants exhibit emission of blue fluorescence, comparable in intensity to the red emission of chlorophyll. The fluorescence decay of the blue emission of spinach leaves recorded by single photon counting techniques is decomposed into e...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00033171
更新日期:1990-09-01 00:00:00
abstract::A rapid procedure has been developed for the isolation of the photosystem two reaction centre complex (PS II RC) from a double mutant of Chlamydomonas reinhardtii, F54-14, which lacks the Photosystem one complex and the chloroplast ATPase. Thylakoid membranes are solubilised with 1.5% (w/v) Triton X-100 and the PS II ...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00042974
更新日期:1995-02-01 00:00:00
abstract::The effect of desiccation and rehydration on the function of Photosystem II has been studied in the desiccation tolerant lichen Cladonia convoluta by thermoluminescence. We have shown that in functional fully hydrated thalli thermoluminescence signals can be observed from the recombination of the S2(3)QB (-) (B band),...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00041010
更新日期:1996-05-01 00:00:00
abstract::The linear, four-step oxidation of water to molecular oxygen by photosystem II requires cooperation between redox reactions driven by light and a set of redox reactions involving the S-states within the oxygen-evolving complex. The oxygenevolving complex is a highly ordered structure in which a number of polypeptides ...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00037001
更新日期:1985-01-01 00:00:00
abstract::Three Chl-protein complexes were isolated from thylakoid membranes of Bryopsis maxima and Ulva pertusa, marine green algae that inhabit the intertidal zone of the Pacific Ocean off the eastern coast of Japan by dodecyl-beta-D-maltoside polyacrylamide gel electrophoresis. The slowest-moving fractions showed low Chl a/b...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-006-9064-x
更新日期:2006-07-01 00:00:00
abstract::While interest in photosynthetic thermal acclimation has been stimulated by climate warming, comparing results across studies requires consistent terminology. We identify five types of photosynthetic adjustments in warming experiments: photosynthesis as measured at the high growth temperature, the growth temperature, ...
journal_title:Photosynthesis research
pub_type: 杂志文章,评审
doi:10.1007/s11120-013-9873-7
更新日期:2014-02-01 00:00:00
abstract::Lipids are important components of transmembrane protein complexes. In order to study the roles of lipids in photosystem II (PSII), we treated the PSII core dimer complex from a thermophilic cyanobacterium Thermosynechococcus vulcanus with phospholipase A(2) (PLA(2)) and lipase, and examined their effects on PSII stru...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/s11120-008-9335-9
更新日期:2008-10-01 00:00:00
abstract::The author gives an autobiographical sketch of his path to chlorophyll research, and describes some results. The discussion is largely focused on long wavelength forms of chlorophyll and how they might be generated by self-assembly. Dimers or oligomers, (Chl)n, result from coordination interactions between the central...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00033128
更新日期:1990-12-01 00:00:00
abstract::After a brief prologue on Otto Kandler's life, we describe briefly his pioneering work on photosynthesis (photophosphorylation and the carbon cycle) and his key participation in the discovery of the concept of three forms of life (Archaea, Prokarya, and Eukarya). With Otto Kandler's passing, both the international pho...
journal_title:Photosynthesis research
pub_type: 传,历史文章,杂志文章
doi:10.1007/s11120-018-0530-z
更新日期:2018-09-01 00:00:00
abstract::Cassava, bean and maize leaves were fed with(14)CO2 in light and the primary products of photosynthesis identified 5 and 10 seconds after assimilation. In maize, approximately three quarters of the labelled carbon was incorporated in C4 acids, in beans about two thirds in PGA, and in cassava approximately 40-60% in C4...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00055123
更新日期:1987-01-01 00:00:00
abstract::Solubilisation of thylakoid membranes from young leaves of Pisum sativum in the presence of Triton X-100 resulted in an almost complete loss of quenching of light-harvesting chlorophyll-protein (LHCP) fluorescence, as measured at 77°K. There were concomitant changes in the kinetics of light-saturation curves of electr...
journal_title:Photosynthesis research
pub_type: 杂志文章
doi:10.1007/BF00037130
更新日期:1986-01-01 00:00:00