Abstract：
:Rates of net CO2 uptake were examined in developing leaves of Hydrocotyle bonariensis. Leaves that developed under high photosynthetically active radiation (48 mol m(-2) day(-1) PAR) were smaller, thicker, and reached maximum size sooner than did leaves that developed under low PAR (4.8 mol m(-2) day(-1)). Maximum net CO2 uptake rates were reached after 5 to 6 days expansion for both the low and the high PAR leaves. Leaves grown at high PAR had higher maximum photosynthetic rates and a higher PAR required for light saturation but showed a more rapid decline in rate with age than did low PAR leaves. To assess the basis for the difference observed in photosynthetic rates, CO2 diffusion conductances and the mesophyll surface available for CO2 absorption were examined for mature leaves. Stomatal conductance was the largest conductance in all treatments and did not vary appreciably with growth PAR. Mesophyll conductance progressively increased with growth PAR (up to 48 mol m(-2) day(-1)) as did the mesophyll surface area per unit leaf area, but the cellular conductance exhibited most of its increase at low PAR (up to 4.8 mol m(-2) day(-1)).
journal_name
Photosynth Resjournal_title
Photosynthesis researchauthors
Longstreth DJ,Hartsock TL,Nobel PSdoi
10.1007/BF00028750subject
Has Abstractpub_date
1981-06-01 00:00:00pages
95-104issue
2eissn
0166-8595issn
1573-5079journal_volume
2pub_type
杂志文章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：:Photosynthesis and carbohydrate metabolism of higher plants need to be tightly regulated to prevent tissue damage during environmental changes. The intracellular position of chloroplasts changes due to a changing light regime. Chloroplast avoidance and accumulation response under high and low light, respectively, are ...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-020-00795-y
更新日期：2021-01-01 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：: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：:Glycolate oxidase (GO; EC 1.1.3.1) was purified from the leaves of three plant species:Amaranthus hypochondriacus L.(NAD-ME type C4 dicot),Pisum sativum L. (C3 species) andParthenium hysterophorus L. (C3-C4. intermediate). A flavin moiety was present in the enzyme from all the three species. The enzyme from the C4 pla...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF02184284
更新日期：1996-03-01 00:00:00
abstract：:Using a novel, pulsed micro-second time-resolved photoacoustic (PA) instrument, we measured thermal dissipation and energy storage (ES) in the intact cells of wild type (WT) Chlamydomonas reinhardtii, and mutants lacking either PSI or PSII reaction centers (RCs). On this time scale, the kinetic contributions of the th...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-011-9682-9
更新日期：2011-09-01 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：: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
pub_type： 杂志文章
doi：10.1007/BF00029385
更新日期：1994-02-01 00:00:00
abstract：:Light-harvesting Chl a/b protein complexes were isolated from the higher plant Sinapis alba, the green alga Chlorella fusca, and the prasinophycean alga Mantoniella squamata by mild gel electrophoresis. The energy transfer from chlorophyll b and the accessory xanthophyll was measured by means of fluoresence spectrosco...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00035234
更新日期：1987-01-01 00:00:00
abstract：:A spontaneous mutant (R/89) of photosynthetic purple bacterium Rhodobacter sphaeroides R-26 was selected for resistance to 200 μM atrazin. It showed increased resistance to interquinone electron transfer inhibitors of o-phenanthroline (resistance factor, RF=20) in UQo reconstituted isolated reaction centers and terbut...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00032585
更新日期：1995-08-01 00:00:00
abstract：:The authors present a study of the fluorescence and absorbance transients occurring in whole cells of purple nonsulfur bacterium Rhodobacter sphaeroides on the millisecond timescale under pulsed actinic illumination. The fluorescence induction curve is interpreted in terms of combination of effects of redox changes in...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-010-9569-1
更新日期：2010-08-01 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
pub_type： 杂志文章
doi：10.1007/s11120-016-0246-x
更新日期：2016-06-01 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：:Oxygenic photosynthesis is driven by two multi-subunit membrane protein complexes, Photosystem I and Photosystem II. In plants and green algae, both complexes are composed of two moieties: a reaction center (RC), where light-induced charge translocation occurs, and a peripheral antenna that absorbs light and funnels i...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1023/B:PRES.0000036881.23512.42
更新日期：2004-01-01 00:00:00
abstract：:We have compared the properties of a mutant of barley lacking Photosystem I (viridis-zb (63) ) with the corresponding wild type using modulated fluorescence measurements. The mutant showed two unexpected characteristics. Firstly, there was a slow decline in the fluorescence signal in the light which was dependent on t...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00016561
更新日期：1993-03-01 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
pub_type： 杂志文章
doi：10.1007/s11120-007-9224-7
更新日期：2007-10-01 00:00:00
abstract：:The current status of research on the structure, regulation, mechanism and importance of Rubisco activase is reviewed. The activase is now recognized to be a member of the AAA(+) family, whose members participate in macromolecular complexes that perform diverse chaperone-like functions. The conserved nucleotide-bindin...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1023/A:1022458108678
更新日期：2003-01-01 00:00:00
abstract：:Here, we describe a new imaging setup able to assess in vivo photosynthetic activity. The system specifically measures time-resolved chlorophyll fluorescence in response to light. It is composed of a fast digital camera equipped with a wide-angle lens for the analysis of samples up to 10 x 10 cm, i.e. entire plants or...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-009-9487-2
更新日期：2009-10-01 00:00:00
abstract：:The genome of the purple non-sulphur photosynthetic bacterium Rhodopseudomonas acidophila has been found to contain multiple copies of puc light-harvesting (LH2) peripheral antenna complex genes. Three wild-type isolates each exhibiting dissimilar peripheral antenna complex phenotypes in response to growth at reduced ...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00034783
更新日期：1996-09-01 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：:Photoacclimation by strains of Haslea "blue" diatom species H. ostrearia and H. silbo sp. nov. ined. was investigated with rapid light curves and induction-recovery curves using fast repetition rate fluorescence. Cultures were grown to exponential phase under 50 µmol m-2 s-1 photosynthetic available radiation (PAR) an...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-018-0508-x
更新日期：2018-09-01 00:00:00
abstract：:A simple approach to determine CO2/O2 specificity factor (τ) of ribulose 1,5-bisphosphate carboxylase/oxygenase is described. The assay measures the amount of CO2 fixation at varying [CO2]/[O2] ratios after complete consumption of ribulose 1,5-bisphosphate (RuBP). Carbon dioxide fixation catalyzed by the carboxylase w...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/BF00029463
更新日期：1995-01-01 00:00:00
abstract：:Optically detected magnetic resonance of chlorosome-containing membranes from the green filamentous bacterium Chloroflexus aurantiacus has been performed both by fluorescence and absorption detection. Triplet states localized in the chlorosomes and in the B808-866 complex have been characterized. After chemical reduct...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1023/A:1014947412940
更新日期：2002-01-01 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
pub_type： 杂志文章
doi：10.1007/BF00055064
更新日期：1987-01-01 00:00:00
abstract：:Chlorosomes of green photosynthetic bacteria are the most amazing example of long-range ordered natural light-harvesting antennae. Chlorosomes are the largest among all known photosynthetic light-harvesting structures (~ 104-105 pigments in the aggregated state). The chlorosomal bacteriochlorophyll (BChl) c/d/e molecu...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-019-00707-9
更新日期：2020-12-01 00:00:00
abstract：:A protein was isolated from membranes of the green sulfur bacterium Chlorobium tepidum. This protein was characterized by gel electrophoresis, gel filtration, analytical ultracentrifugation and amino acid sequencing. The molecular weight of the purified protein was shown to be 26 kDa by SDS-PAGE. HPLC gelfiltration, S...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1023/B:PRES.0000015383.58680.56
更新日期：2004-02-01 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
pub_type： 杂志文章
doi：10.1007/s11120-013-9832-3
更新日期：2013-07-01 00:00:00
abstract：:The analysis of primary and secondary nitrogen metabolism in plants by nuclear magnetic resonance (NMR) spectroscopy is comprehensively reviewed. NMR is a versatile analytical tool, and the combined use of (1)H, (2)H, (13)C, (14)N and (15)N NMR allows detailed investigation of the acquisition, assimilation and metabol...
journal_title：Photosynthesis research
pub_type： 杂志文章,评审
doi：10.1007/s11120-004-2081-8
更新日期：2005-01-01 00:00:00
abstract：:Acaryochloris marina is a unique cyanobacterium that contains chlorophyll (Chl) d as a major pigment. Because Chl d has smaller excitation energy than Chl a used in ordinary photosynthetic organisms, the energetics of the photosystems of A. marina have been the subject of interest. It was previously shown that the red...
journal_title：Photosynthesis research
pub_type： 杂志文章
doi：10.1007/s11120-014-0073-x
更新日期：2015-08-01 00:00:00
abstract：:The D1/D2 heterodimer core is the heart of the photosystem II reaction center. A characteristic feature of this heterodimer is the differentially rapid, light-dependent degradation of the D1 protein. The D1 protein is possibly the most researched photosynthetic polypeptide, with aspects of structure-function, gene, me...
journal_title：Photosynthesis research
pub_type： 杂志文章,评审
doi：10.1007/s11120-008-9342-x
更新日期：2008-10-01 00:00:00
