Search results for: Suleyman I. Allakhverdiev

Items from 1 to 20 out of 133 results

article

Influence of osmolytes on the stability of thylakoid‐based dye‐sensitized solar cells

Roman A. Voloshin, Nathan G. Brady, Sergey K. Zharmukhamedov, Yashar M. Feyziyev, more

International Journal of Energy Research > 43 > 14 > 8878 - 8889

In recent years, there has been considerable interest in incorporating naturally occurring components of the photosynthetic apparatus into man‐made solar cells, because of the high quantum efficiency of photosynthetic reaction centers. One hurdle to overcome regarding the use of native membranes in these devices is their limited lifespans. In this study, we used stabilizers to increase the long‐term...

article

International Conference on “Photosynthesis and Hydrogen Energy Research for Sustainability-2017”

Suleyman I. Allakhverdiev, Rajagopal Subramanyam, Tatsuya Tomo

Photosynthesis Research > 2019 > 139 > 1-3 > 1-8

article

Electrogenic reactions in Mn-depleted photosystem II core particles in the presence of synthetic binuclear Mn complexes

Liya A. Vitukhnovskaya, Sergey K. Zharmukhamedov, Mahdi M. Najafpour, Suleyman I. Allakhverdiev, more

Biochemical and Biophysical Research Communications > 2018 > 503 > 1 > 222-227

An electrometrical technique was used to investigate electron transfer between synthetic binuclear manganese (Mn) complexes, designated M − 2 and M − 3, and the redox-active neutral tyrosine radical (Y_Z^•) in proteoliposomes containing Mn-depleted photosystem II (PS II) core particles in response to single laser flashes. In the absence of Mn-containing compounds, the observed flash-induced membrane...

article

Photosynthesis supported by a chlorophyll f-dependent, entropy-driven uphill energy transfer in Halomicronema hongdechloris cells adapted to far-red light

Franz-Josef Schmitt, Züleyha Yenice Campbell, Mai Vi Bui, Anne Hüls, more

Photosynthesis Research > 2019 > 139 > 1-3 > 185-201

The phototrophic cyanobacterium Halomicronema hongdechloris shows far-red light-induced accumulation of chlorophyll (Chl) f, but the involvement of the pigment in photosynthetic energy harvesting by photosystem (PS) II is controversially discussed. While H. hongdechloris contains negligible amounts of Chl f in white-light culture conditions, the ratio of Chl f to Chl a is reversibly changed up to...

article

Phenotyping of isogenic chlorophyll-less bread and durum wheat mutant lines in relation to photoprotection and photosynthetic capacity

Marek Zivcak, Marian Brestic, Lenka Botyanszka, Yang-Er Chen, more

Photosynthesis Research > 2019 > 139 > 1-3 > 239-251

In our experiments, we examined high light responses and photosynthetic capacity of chlorophyll-less isogenic mutant lines of hexaploid bread wheat (Triticum aestivum L.) and tetraploid durum wheat (Triticum durum L.) in comparison to parental lines representing the wild type (WT), in two growth phases and two environments. In young plants, we observed a typical yellow-green phenotype with low chlorophyll...

article

Honoring eight senior distinguished plant biologists from India

Rajagopal Subramanyam, Suleyman I. Allakhverdiev, Govindjee

Photosynthesis Research > 2019 > 139 > 1-3 > 45-52

We summarize here research contributions of eight stalwarts in photosynthesis research from India. These distinguished scientists (Shree Kumar Apte, Basanti Biswal, Udaya C. Biswal, Agepati S. Raghavendra, Attipalli Ramachandra Reddy, Prafullachandra Vishnu (Raj) Sane, Baishnab Charan Tripathy, and Dinesh C. Uprety) were honored on November 2, 2017, at the School of Life Sciences, University of Hyderabad...

article

Toward Escherichia coli bacteria machine for water oxidation

Mohammad Mahdi Najafpour, Navid Jameei Moghaddam, Leila Hassani, Robabeh Bagheri, more

Photosynthesis Research > 2018 > 136 > 2 > 257-267

Nature uses a Mn oxide-based catalyst for water oxidation in plants, algae, and cyanobacteria. Mn oxides are among major candidates to be used as water-oxidizing catalysts. Herein, we used two straightforward and promising methods to form Escherichia coli bacteria/Mn oxide compounds. In one of the methods, the bacteria template was intact after the reaction. The catalysts were characterized by X-ray...

article

Wheat plant selection for high yields entailed improvement of leaf anatomical and biochemical traits including tolerance to non-optimal temperature conditions

Marian Brestic, Marek Zivcak, Pavol Hauptvogel, Svetlana Misheva, more

Photosynthesis Research > 2018 > 136 > 2 > 245-255

Assessment of photosynthetic traits and temperature tolerance was performed on field-grown modern genotype (MG), and the local landrace (LR) of wheat (Triticum aestivum L.) as well as the wild relative species (Aegilops cylindrica Host.). The comparison was based on measurements of the gas exchange (A/c_i, light and temperature response curves), slow and fast chlorophyll fluorescence kinetics, and...

article

An aluminum/cobalt/iron/nickel alloy as a precatalyst for water oxidation

Mohammad Mahdi Najafpour, Somayeh Mehrabani, Robabeh Bagheri, Zhenlun Song, more

International Journal of Hydrogen Energy > 2018 > 43 > 4 > 2083-2090

Among different strategies, water splitting toward hydrogen production is a promising process to store energy from intermittent sources. However, the anodic water oxidation is a bottleneck for water splitting. In this paper, we report an aluminum/cobalt/iron/nickel alloy as a precatalyst for the electrochemical water oxidation. The alloy electrode contains different metal ions including cobalt, iron,...

article

Vyacheslav (Slava) Klimov (1945–2017): A scientist par excellence, a great human being, a friend, and a Renaissance man

Suleyman I. Allakhverdiev, Sergey K. Zharmukhamedov, Margarita V. Rodionova, Vladimir A. Shuvalov, more

Photosynthesis Research > 2018 > 136 > 1 > 1-16

Vyacheslav Vasilevich (V.V.) Klimov (or Slava, as most of us called him) was born on January 12, 1945 and passed away on May 9, 2017. He began his scientific career at the Bach Institute of Biochemistry of the USSR Academy of Sciences (Akademy Nauk (AN) SSSR), Moscow, Russia, and then, he was associated with the Institute of Photosynthesis, Pushchino, Moscow Region, for about 50 years. He worked in...

article

Evaluation of new Cu(II) complexes as a novel class of inhibitors against plant carbonic anhydrase, glutathione reductase, and photosynthetic activity in photosystem II

Margarita V. Rodionova, Sergei K. Zharmukhamedov, Mehmet Sayım Karacan, Kubra Begum Venedik, more

Photosynthesis Research > 2017 > 133 > 1-3 > 139-153

Increasing inefficiency of production of important agricultural plants raises one of the biggest problems in the modern world. Herbicide application is still the best method of weed management. Traditional herbicides blocking only one of the plant metabolic pathways is ineffective due to the rapid growth of herbicide-resistant weeds. The synthesis of novel compounds effectively suppressing several...

article

Preface: photosynthesis and hydrogen energy research for sustainability

Tatsuya Tomo, Suleyman I. Allakhverdiev

Photosynthesis Research > 2017 > 133 > 1-3 > 1-3

Energy supply, climate change, and global food security are among the main chalenges facing humanity in the twenty-first century. Despite global energy demand is continuing to increase, the availability of low cost energy is decreasing. Together with the urgent problem of climate change due to CO₂ release from the combustion of fossil fuels, there is a strong requirement of developing the clean and...

article

Heat stress-induced effects of photosystem I: an overview of structural and functional responses

Alexander G. Ivanov, Maya Y. Velitchkova, Suleyman I. Allakhverdiev, Norman P. A. Huner

Photosynthesis Research > 2017 > 133 > 1-3 > 17-30

Temperature is one of the main factors controlling the formation, development, and functional performance of the photosynthetic apparatus in all photoautotrophs (green plants, algae, and cyanobacteria) on Earth. The projected climate change scenarios predict increases in air temperature across Earth’s biomes ranging from moderate (3–4 °C) to extreme (6–8 °C) by the year 2100 (IPCC in Climate change...

article

Resistance of Arabidopsis thaliana L. photosynthetic apparatus to UV-B is reduced by deficit of phytochromes B and A

Aleksandra Yu. Khudyakova, Vladimir D. Kreslavski, Galina N. Shirshikova, Sergey K. Zharmukhamedov, more

Journal of Photochemistry and Photobiology B: Biology > 2017 > 169 > C > 41-46

The photosynthetic responses of 25-day-old Arabidopsis phyA phyB double mutant (DM) compared with the wild type (WT) to UV-B radiation (1Wm⁻², 30min) were investigated. UV-B irradiation led to reduction of photosystem 2 (PS-2) activity and the photosynthetic rate. In plants grown under both white and red light (λ_m - 660nm) the reduction was greater in DM plants compared to the WT. Without UV-B irradiation...

article

Preface to the special issue section on “The 7th International Conference on Photosynthesis and Hydrogen Energy Research for Sustainability in Honor of Nathan Nelson and T. Nejat Veziroglu, 19–25 June 2016, Pushchino, Russia”

Harvey J.M. Hou, Suleyman I. Allakhverdiev

International Journal of Hydrogen Energy > 2017 > 42 > 12 > 8408-8409

article

An introduction to the special issue section on “The 7th International Conference on Photosynthesis and Hydrogen Energy Production in Honor of Nathan Nelson and T. Nejat Veziroğlu, 19–25 June 2016, Pushchino, Russia”

Harvey J.M. Hou, Tatsuya Tomo, Suleyman I. Allakhverdiev

International Journal of Hydrogen Energy > 2017 > 42 > 12 > 8410-8417

The research in photosynthesis and hydrogen energy production provides a unique opportunity for transforming sustainable solar energy into our energy system. This special issue presented the selected and invited papers from the International Conference on Photosynthesis Research for Sustainability in honor of Nathan Nelson and T. Nejat Veziroğlu which was held on June 19–25, 2016, in Pushchino, Russia...

article

Lettuce flavonoids screening and phenotyping by chlorophyll fluorescence excitation ratio

Marek Zivcak, Klaudia Brückova, Oksana Sytar, Marian Brestic, more

Planta > 2017 > 245 > 6 > 1215-1229

Main conclusionEnvironmentally induced variation and the genotypic differences in flavonoid and phenolic content in lettuce can be reliably detected using the appropriate parameters derived from the records of rapid non-invasive fluorescence technique.The chlorophyll fluorescence excitation ratio method was designed as a rapid and non-invasive tool to estimate the content of UV-absorbing phenolic...

article

Fluorescent Labeling Preserving OCP Photoactivity Reveals Its Reorganization during the Photocycle

Eugene G. Maksimov, Nikolai N. Sluchanko, Kirill S. Mironov, Evgeny A. Shirshin, more

Biophysical Journal > 2017 > 112 > 4 > 827

article

Proposed mechanisms for water oxidation by Photosystem II and nanosized manganese oxides

Mohamad Mahdi Najafpour, Sima Heidari, S. Esmael Balaghi, Małgorzata Hołyńska, more

Biochimica et Biophysica Acta (BBA) - Bioenergetics > 2017 > 1858 > 2 > 156-174

Plants, algae and cyanobacteria capture sunlight, extracting electrons from H₂O to reduce CO₂ into sugars while releasing O₂ in the oxygenic photosynthetic process. Because of the important role of water oxidation in artificial photosynthesis and many solar fuel systems, understanding the structure and function of this unique biological catalyst forms a requisite research field. Herein the structure...

article

Fluorescent Labeling Preserving OCP Photoactivity Reveals Its Reorganization during the Photocycle

Eugene G. Maksimov, Nikolai N. Sluchanko, Kirill S. Mironov, Evgeny A. Shirshin, more

Biophysical Journal > 2017 > 112 > 1 > 46-56

Orange carotenoid protein (OCP), responsible for the photoprotection of the cyanobacterial photosynthetic apparatus under excessive light conditions, undergoes significant rearrangements upon photoconversion and transits from the stable orange to the signaling red state. This is thought to involve a 12-Å translocation of the carotenoid cofactor and separation of the N- and C-terminal protein domains...

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Search results for: Suleyman I. Allakhverdiev

Influence of osmolytes on the stability of thylakoid‐based dye‐sensitized solar cells

International Conference on “Photosynthesis and Hydrogen Energy Research for Sustainability-2017”

Electrogenic reactions in Mn-depleted photosystem II core particles in the presence of synthetic binuclear Mn complexes

Photosynthesis supported by a chlorophyll f-dependent, entropy-driven uphill energy transfer in Halomicronema hongdechloris cells adapted to far-red light

Phenotyping of isogenic chlorophyll-less bread and durum wheat mutant lines in relation to photoprotection and photosynthetic capacity

Honoring eight senior distinguished plant biologists from India

Toward Escherichia coli bacteria machine for water oxidation

Wheat plant selection for high yields entailed improvement of leaf anatomical and biochemical traits including tolerance to non-optimal temperature conditions

An aluminum/cobalt/iron/nickel alloy as a precatalyst for water oxidation

Vyacheslav (Slava) Klimov (1945–2017): A scientist par excellence, a great human being, a friend, and a Renaissance man

Evaluation of new Cu(II) complexes as a novel class of inhibitors against plant carbonic anhydrase, glutathione reductase, and photosynthetic activity in photosystem II

Preface: photosynthesis and hydrogen energy research for sustainability

Heat stress-induced effects of photosystem I: an overview of structural and functional responses

Resistance of Arabidopsis thaliana L. photosynthetic apparatus to UV-B is reduced by deficit of phytochromes B and A

Preface to the special issue section on “The 7th International Conference on Photosynthesis and Hydrogen Energy Research for Sustainability in Honor of Nathan Nelson and T. Nejat Veziroglu, 19–25 June 2016, Pushchino, Russia”

An introduction to the special issue section on “The 7th International Conference on Photosynthesis and Hydrogen Energy Production in Honor of Nathan Nelson and T. Nejat Veziroğlu, 19–25 June 2016, Pushchino, Russia”

Lettuce flavonoids screening and phenotyping by chlorophyll fluorescence excitation ratio

Fluorescent Labeling Preserving OCP Photoactivity Reveals Its Reorganization during the Photocycle

Proposed mechanisms for water oxidation by Photosystem II and nanosized manganese oxides

Fluorescent Labeling Preserving OCP Photoactivity Reveals Its Reorganization during the Photocycle

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