Light- and CO2-saturated photosynthesis: enhancement by oxygen.


:Oxygen may enhance CO2-saturated photosynthesis in intact leaves, which display the Warburg effect when illuminated at the current atmospheric level of CO2 and O2, of about 350 microl l(-1) and 21%, respectively. The magnitude of the stimulation depends on irradiance. The K(M)(O2) of the stimulation is 128 microM (10.6% O2). Maximum enhancement in wheat leaves is 6.1 and 5.3 micromol m(-2) s(-1 )under 27.9 and 18.7 mW cm(-2), respectively, corresponding to a 25-30% increase in the ribulose 1,5-bisphosphate (RuBP) turnover rate if compared with O2-free ambient gas phase. The stimulation appears in 5-10 s after a sharp increase in O2. In response to a decrease in O2, the new stabilized rate is reached in 5-7 min. The stimulation does not involve any increase in the activity of Rubisco. The effect correlates with increased concentration of RuBP. Oxygen enhances CO2-saturated photosynthesis by acting as a terminal electron acceptor in the photosynthetic electron transport. The magnitude of the effect may be adopted as an index of the pseudocyclic photophosphorylation in vivo.


Photosynth Res


Photosynthesis research


Viil J,Ivanova H,Pärnik T




Has Abstract


2006-06-01 00:00:00












  • Energy migration and exciton trapping in green plant photosynthesis.

    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


    authors: Geacintov NE,Breton J,Knox RS

    更新日期:1986-01-01 00:00:00

  • Nigericin insensitive post-illumination reduction in fluorescence yield in Dunaliella tertiolecta (chlorophyte).

    abstract::Cells of the green alga Dunaliella tertiolecta grown in a light/dark cycle were exposed to high light for about 15 min. In light, energy-dependent quenching reduced fluorescence emission and decreased PS II efficiency. Within 3 minutes after darkening fluorescence quenching largely relaxed. However, PS II fluorescence...

    journal_title:Photosynthesis research

    pub_type: 杂志文章


    authors: Casper-Lindley C,Björkman O

    更新日期:1996-12-01 00:00:00

  • Light-harvesting features revealed by the structure of plant photosystem I.

    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


    authors: Ben-Shem A,Frolow F,Nelson N

    更新日期:2004-01-01 00:00:00

  • Time-dependent upregulation of electron transport with concomitant induction of regulated excitation dissipation in Haslea diatoms.

    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


    authors: Perkins R,Williamson C,Lavaud J,Mouget JL,Campbell DA

    更新日期:2018-09-01 00:00:00

  • Photosynthetic energy storage efficiency in Chlamydomonas reinhardtii, based on microsecond photoacoustics.

    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


    authors: Yan C,Schofield O,Dubinsky Z,Mauzerall D,Falkowski PG,Gorbunov MY

    更新日期:2011-09-01 00:00:00

  • Periplasmic electron carriers and photo-induced electron transfer in the photosynthetic bacterium Ectothiorhodospira sp.

    abstract::A detailed analysis of the periplasmic electron carriers of the photosynthetic bacterium Ectothiorhodospira sp. has been performed. Two low mid-point redox potential electron carriers, cytochrome c' and cytochrome c, are detected. A high potential iron-sulfur protein is the only high mid-point redox potential electron...

    journal_title:Photosynthesis research

    pub_type: 杂志文章


    authors: Buche A,Picorel R,Moulis JM,Verméglio A

    更新日期:2000-01-01 00:00:00

  • International conference on "Photosynthesis research for sustainability-2013: in honor of Jalal A. Aliyev", held during June 5-9, 2013, Baku, Azerbaijan.

    abstract::In this brief report, we provide a pictorial essay on an international conference "Photosynthesis Research for Sustainability-2013 in honor of Jalal A. Aliyev" that was held in Baku, Azerbaijan, during June 5-9, 2013 ( ). We begin this report with a brief note on Jalal Aliyev, th...

    journal_title:Photosynthesis research



    authors: Allakhverdiev SI,Huseynova IM,Govindjee

    更新日期:2013-12-01 00:00:00

  • The effect of medium viscosity on kinetics of ATP hydrolysis by the chloroplast coupling factor CF1.

    abstract::The coupling factor CF1 is a catalytic part of chloroplast ATP synthase which is exposed to stroma whose viscosity is many-fold higher than that of reaction mixtures commonly used to measure kinetics of CF1-catalyzed ATP hydrolysis. This study is focused on the effect of medium viscosity modulated by sucrose or bovine...

    journal_title:Photosynthesis research

    pub_type: 杂志文章


    authors: Malyan AN

    更新日期:2016-05-01 00:00:00

  • Redox control of gene expression and the function of chloroplast genomes - an hypothesis.

    abstract::Two-component regulatory systems that respond to changes in redox potential have recently been discovered in bacteria. 'Redox sensors' are defined as electron carriers which initiate control of gene expression upon oxidation or reduction. 'Redox response regulators' are defined as DNA-binding proteins which modify gen...

    journal_title:Photosynthesis research

    pub_type: 杂志文章


    authors: Allen JF

    更新日期:1993-05-01 00:00:00

  • Photosynthetic responses of cassava cultivars (Manihot esculenta Crantz) from different habitats to temperature.

    abstract::Maximum photosynthetic CO2 exchange rates (Pn) of single attached leaves were determined for several cassava cultivars selected from different habitats and grown in pots outdoors at CIAT, Colombia, S.A. Pn rates were in a narrow range of 22 to 26 μmol CO2 m(-2)s(-1) for all cultivars tested when measured at high photo...

    journal_title:Photosynthesis research

    pub_type: 杂志文章


    authors: El-Sharkawy MA,Cock JH,Held AA

    更新日期:1984-09-01 00:00:00

  • Bicarbonate effect on electron flow in a cyanobacteriumSynechocystis PCC 6803.

    abstract::In this communication, evidence is presented from the kinetics of QA (-) decay (where QA is the first plastoquinone electron acceptor of photosystem II) and oxygen evolution for the requirement of bicarbonate in the electron transport in a cyanobacteriumSynechocystis (Pasteur Culture Collection 6803). A large slowing ...

    journal_title:Photosynthesis research

    pub_type: 杂志文章


    authors: Cao J,Govindjee

    更新日期:1988-10-01 00:00:00

  • Endor characterization and D2O exchange in the [Formula: see text] radical in photosystem II.

    abstract::The early suggestion by Lozier and Butler (Photochem. Photobiol. 17, 133-137 (1973)) that EPR Signal II arises from radicals associated with the water-splitting process in PSII has been confirmed and extended over the intervening years. Recent work has identified the Signal II radicals, [Formula: see text] and [Formul...

    journal_title:Photosynthesis research

    pub_type: 杂志文章


    authors: Chandrashekar TK,O'malley PJ,Rodriguez I,Babcock GT

    更新日期:1986-01-01 00:00:00

  • Roderick K. Clayton: a life, and some personal recollections.

    abstract::Roderick K. Clayton passed away on October 23, 2011, at the age of 89, shortly after the plan for this dedicatory issue of Photosynthesis Research had been hatched. I had just written a lengthy letter to him to re-establish contact after a hiatus of 2 or 3 years, and to suggest that I visit him to talk about his life....

    journal_title:Photosynthesis research

    pub_type: 传,历史文章,杂志文章


    authors: Wraight CA

    更新日期:2014-05-01 00:00:00

  • Target theory and the photoinactivation of Photosystem II.

    abstract::Application of target theory to the photoinactivation of Photosystem II in pea leaf discs (Park et al. 1995, 1996a,b) reveals that there is a critical light dosage below which there is complete photoprotection and above which there is photoinactivation (i.e a light-induced loss of oxygen flash yield). The critical dos...

    journal_title:Photosynthesis research

    pub_type: 杂志文章


    authors: Sinclair J,Park YI,Chow WS,Anderson JM

    更新日期:1996-10-01 00:00:00

  • C-type cytochromes in the photosynthetic electron transfer pathways in green sulfur bacteria and heliobacteria.

    abstract::Green sulfur bacteria and heliobacteria are strictly anaerobic phototrophs that have homodimeric type 1 reaction center complexes. Within these complexes, highly reducing substances are produced through an initial charge separation followed by electron transfer reactions driven by light energy absorption. In order to ...

    journal_title:Photosynthesis research

    pub_type: 杂志文章,评审


    authors: Azai C,Tsukatani Y,Itoh S,Oh-oka H

    更新日期:2010-06-01 00:00:00

  • Picosecond excitation energy transfer of allophycocyanin studied in solution and in crystals.

    abstract::Cyanobacteria perform photosynthesis with the use of large light-harvesting antennae called phycobilisomes (PBSs). These hemispherical PBSs contain hundreds of open-chain tetrapyrrole chromophores bound to different peptides, providing an arrangement in which excitation energy is funnelled towards the PBS core from wh...

    journal_title:Photosynthesis research

    pub_type: 杂志文章


    authors: Ranjbar Choubeh R,Sonani RR,Madamwar D,Struik PC,Bader AN,Robert B,van Amerongen H

    更新日期:2018-03-01 00:00:00

  • An invitation to the 16th international congress on photosynthesis research in 2013: opportunities and challenges in the 21st century.

    abstract::The 16th International Congress on Photosynthesis will be held August 11-16, 2013 in St. Louis, Missouri, USA. The congress will include 15 plenary lectures, 21 scientific symposia, poster sessions, exhibitors, opening reception, final banquet, excursions and accompanying persons program. The congress is organized as ...

    journal_title:Photosynthesis research



    authors: Blankenship RE,Musick J,Cooley J,Dutcher S,Govindjee

    更新日期:2013-07-01 00:00:00

  • Modified molecular interactions of the pheophytin and plastoquinone electron acceptors in photosystem II of chlorophyll D-containing Acaryochloris marina as revealed by FTIR spectroscopy.

    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


    authors: Sano Y,Endo K,Tomo T,Noguchi T

    更新日期:2015-08-01 00:00:00

  • Alternative photosystem I-driven electron transport routes: mechanisms and functions.

    abstract::In addition to the linear electron transport, several alternative Photosystem I-driven (PS I) electron pathways recycle the electrons to the intersystem electron carriers mediated by either ferredoxin:NADPH reductase, NAD(P)H dehydrogenase, or putative ferredoxin:plastoquinone reductase. The following functions have b...

    journal_title:Photosynthesis research

    pub_type: 杂志文章


    authors: Bukhov N,Carpentier R

    更新日期:2004-01-01 00:00:00

  • Rapid evolutionary divergence of Photosystem I core subunits PsaA and PsaB in the marine prokaryote Prochlorococcus.

    abstract::The nucleotide sequences of the genes coding for the subunits of the Photosystem I (PS I) core, PsaA and PsaB were determined for the marine prokaryotic oxyphototrophs Prochlorococcus sp. MED4 (CCMP1378), P. marinus SS120 (CCMP1375) and Synechococcus sp. WH7803. Divergence of these sequences from those of both freshwa...

    journal_title:Photosynthesis research

    pub_type: 杂志文章


    authors: van der Staay GW,Moon-van der Staay SY,Garczarek L,Partensky F

    更新日期:2000-01-01 00:00:00

  • Investigating UV screening in leaves by two different types of portable UV fluorimeter reveals in vivo screening by anthocyanins and carotenoids.

    abstract::Two portable instruments, designed to evaluate epidermal UV screening in leaves, were compared: the Dualex and the UV-A-PAM fluorimeter. Both instruments excite chlorophyll fluorescence at the same UV wavelengths but reference excitation is in the red and the blue spectral range in the former and the latter fluorimete...

    journal_title:Photosynthesis research

    pub_type: 杂志文章


    authors: Pfündel EE,Ben Ghozlen N,Meyer S,Cerovic ZG

    更新日期:2007-07-01 00:00:00

  • Making proteins green; biosynthesis of chlorophyll-binding proteins in cyanobacteria.

    abstract::Chlorophyll (Chl) is an essential component of the photosynthetic apparatus. Embedded into Chl-binding proteins, Chl molecules play a central role in light harvesting and charge separation within the photosystems. It is critical for the photosynthetic cell to not only ensure the synthesis of a sufficient amount of new...

    journal_title:Photosynthesis research

    pub_type: 杂志文章,评审


    authors: Sobotka R

    更新日期:2014-02-01 00:00:00

  • A robust protocol for site-directed mutagenesis of the D1 protein inChlamydomonas reinhardtii: A PCR-splicedpsbA gene in a plasmid conferring spectinomycin resistance was introduced into apsbA deletion strain.

    abstract::In this paper, we describe a protocol to obtain a site-directed mutants in thepsbA gene ofChlamydomonas reinhardtii, which overcomes several drawbacks of previous protocols, and makes it possible to generate a mutant within a month. Since the large size of the gene, and the presence of four large introns has made mole...

    journal_title:Photosynthesis research

    pub_type: 杂志文章


    authors: Minagawa J,Crofts AR

    更新日期:1994-11-01 00:00:00

  • Perturbations at the chloride site during the photosynthetic oxygen-evolving cycle.

    abstract::Photosystem II (PSII) catalyzes the oxidation of water to O2 at the manganese-containing, oxygen-evolving complex (OEC). Photoexcitation of PSII results in the oxidation of the OEC; four sequential oxidation reactions are required for the generation and release of molecular oxygen. Therefore, with flash illumination, ...

    journal_title:Photosynthesis research

    pub_type: 杂志文章


    authors: Cooper IB,Barry BA

    更新日期:2007-06-01 00:00:00

  • Thomas John Wydrzynski (8 July 1947-16 March 2018).

    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


    authors: Conlan B,Govindjee,Messinger J

    更新日期:2019-06-01 00:00:00

  • In vitro demethoxycarbonylation of various chlorophyll analogs by a BciC enzyme.

    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


    authors: Teramura M,Harada J,Tamiaki H

    更新日期:2019-03-01 00:00:00

  • Molecular biology of the C3 photosynthetic carbon reduction cycle.

    abstract::In recent years the enzymes of the C3 photosynthetic carbon reduction (PCR) cycle have been studied using the techniques of molecular biology. In this review we discuss the primary protein sequences and structural predictions that have been made for a number of these enzymes, which, with the input of crystallographic ...

    journal_title:Photosynthesis research

    pub_type: 杂志文章


    authors: Raines CA,Lloyd JC,Dyer TA

    更新日期:1991-01-01 00:00:00

  • An immunological method for quantitative determination of photosynthetic fructose-1,6-bisphosphatase in leaf crude extracts.

    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

    pub_type: 杂志文章


    authors: Hermoso R,Chueca A,Lazaro JJ,Lopez-Gorge J

    更新日期:1987-01-01 00:00:00

  • Linear and nonlinear optical responses in bacteriochlorophyll a.

    abstract::Nonlinear optical responses of bacteriochlorophyll a (BChl a) were investigated by means of the three-pulse four-wave mixing (FWM) technique under the resonant excitation into the Q ( y ) band. The experimental results are explained by a theoretical model calculation including the Brownian oscillation mode of the solv...

    journal_title:Photosynthesis research

    pub_type: 杂志文章


    authors: Sugisaki M,Fujii R,Cogdell RJ,Hashimoto H

    更新日期:2008-02-01 00:00:00

  • Wolfgang Haehnel 20.1.1944-13.5.2013.

    abstract::Almost 1 year has passed since the death of Wolfgang Haehnel on 13.5.2013, after a long fight against cancer. With his death, the photosynthesis community has lost an excellent scientist, a critical peer, and a stimulating sparring partner in discussions: I also lost a good friend. ...

    journal_title:Photosynthesis research

    pub_type: 传,历史文章


    authors: Scheer H

    更新日期:2014-06-01 00:00:00