Article
Multidisciplinary Sciences
Aditya Kumar, Ankush Prasad, Michaele Sedlarova, Ravindra Kale, Laurie K. Frankel, Larry Sallans, Terry M. Bricker, Pavel Pospisil
Summary: This study investigates the oxidative modifications of D1 and D2 proteins in PSII by superoxide anion and hydroxyl radicals, revealing that the presence of alpha-tocopherol helps prevent oxidative damage to PSII.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Engineering, Environmental
Yuqin Lu, Hua Deng, Tingting Pan, Xu Liao, Changbin Zhang, Hong He
Summary: A simple strategy was provided to regulate the morphology and microstructure of (5-MnO2 via the hydrothermal reaction temperature, which improved the reactivity and lifetime of catalysts in the catalytic ozonation of toluene. The optimized MnO2-260 catalyst showed high catalytic activity and excellent stability at the approximately ambient temperature of 40 degrees C. Surface oxygen vacancy clusters, especially surface oxygen dimer vacancies, were found to be critical in ozone activation.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Analytical
Eva Perez, Luis Vazquez, Carmen Quintana, Maria Dolores Petit-Dominguez, Elena Casero, Elias Blanco
Summary: In this study, we investigated the use of manganese (II) phosphate (MnP) as a catalyst for the determination of reactive oxygen species (ROS) in seminal plasma. The modification of a glassy carbon electrode with MnP showed an enhanced electrochemical response after the addition of superoxide. The combination of MnP and diamond nanoparticles yielded the best improvement in sensor response.
ANALYTICA CHIMICA ACTA
(2023)
Article
Plant Sciences
B. K. Semin, L. N. Davletshina, S. N. Goryachev, M. Seibert
Summary: The study demonstrates that Fe(II) cations efficiently bind to the high-affinity, Mn-binding site in PSII membranes, affecting the charge recombination rate. Calcium depletion or rebinding significantly influences the location and ligand composition of one Mn cation in the Mn4CaO5 cluster.
PHOTOSYNTHESIS RESEARCH
(2021)
Article
Engineering, Environmental
Yang Guo, Jingfei Long, Jun Huang, Gang Yu, Yujue Wang
Summary: The commonly used quenching method may not be suitable for investigating the role of ROS in pollutant abatement during catalytic ozonation, as the quenchers can interfere with the reaction mechanism.
Article
Chemistry, Multidisciplinary
Qiyu Liu, Liyin Shi, Ying Liao, Xianshuo Cao, Xiaoqing Liu, Yanxia Yu, Zifan Wang, Xihong Lu, Jianwei Wang
Summary: This study designs ultrathin-FeOOH-coated MnO2 nanospheres as sonosensitizers to enhance the anticancer efficacy of sonodynamic therapy. The nanospheres facilitate ultrasound-triggered reactive oxygen species (ROS) production and modulate the tumor microenvironment. The results show that MO@FHO exhibits high tumor suppression efficacy without obvious toxicity to normal tissues.
Review
Plant Sciences
Nicholas Oliver, Anton P. Avramov, Dennis J. Nuernberg, Holger Dau, Robert L. Burnap
Summary: This review discusses the structure and formation of the manganese cluster of photosystem II and its relationship with different Mn oxides. It also considers the evolutionary origin of Mn4CaO5 and the functional role of Ca2+ in the process.
PHOTOSYNTHESIS RESEARCH
(2022)
Article
Chemistry, Physical
Feng Wang, Qinghe Wu, Chunfu Zhang, Lingchi Kong, Rongtai Zuo, Kai Feng, Guoping Jia, Mengfei Hou, Jianhua Zou, Yimin Chai, Jia Xu, Xiaoyuan Chen, Qinglin Kang
Summary: The management of diabetic wounds is challenging due to bacterial infections and chronic inflammation. This study proposes a two-phase treatment strategy using reactive oxygen species (ROS) to combat infection and promote wound regeneration. The strategy effectively eliminates bacteria and stimulates wound healing.
Article
Engineering, Environmental
Xiao-Na Zhao, Zhuang-Song Huang, Gui-Jing Wang, Yu-Lei Liu, Wei-Wei Song, Jun Ma, Lu Wang
Summary: Manganese ion (Mn(II)) in groundwater, caused by the contamination of molybdenum mining, inhibited the oxidation of organic pollutants by Fe(VI). However, it was found that the Fe(VI)/Mn(II) system significantly improved the oxidation efficiency of bisphenol compounds (BPA, BPF, AAP, and 4-tBP) at pH 7.0.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Plant Sciences
Pornpan Napaumpaiporn, Takako Ogawa, Kintake Sonoike, Yoshitaka Nishiyama
Summary: This study demonstrates that overexpression of superoxide dismutase and catalase in cyanobacteria can reduce ROS accumulation and enhance the repair of photosystem II (PSII), enabling photosynthesis and cell proliferation to adapt to strong light conditions.
Article
Engineering, Environmental
Yang Zong, Hua Zhang, Hao Liu, Jun Xu, Zhengwei Zhou, Xiaomeng Zhang, Ting Zhang, Deli Wu
Summary: The performance of the Mn(II)/PI process in the selective degradation of organic contaminants can be enhanced by the complexation of Mn(II) by EDTA, leading to the generation of high-valent manganese-oxo (MnV-oxo) as the dominant reactive species. Ligands analogous to EDTA can also enhance the process and favor MnV-oxo as the dominant species.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Plant Sciences
Ravindra S. Kale, Jacob L. Seep, Larry Sallans, Laurie K. Frankel, Terry M. Bricker
Summary: Under aerobic conditions, both photosystems and cytochrome complexes in photosynthetic organisms generate Reactive Oxygen Species (ROS). This study identifies the distribution of oxidatively modified amino acid residues in chlorophyll light-harvesting complexes and highlights differences between complexes from different sources.
PHOTOSYNTHESIS RESEARCH
(2022)
Article
Biochemistry & Molecular Biology
Boris K. Semin, Lira N. Davletshina
Summary: Ca-depleted photosystem II membranes obtained by treatment with acidic buffer lack Ca2+ in the Mn4CaO5 cluster, but contain all extrinsic proteins protecting this cluster (PSII(-Ca/low pH)). Unlike native photosystem II, the Mn cluster in PSII(-Ca/low pH) samples can be reduced by small-sized reductants. By substituting Mn cation(s) with Fe cation(s) at pH 6.5, a chimeric cluster (3Mn1Fe) was obtained in PSII(-Ca/low pH) membranes containing extrinsic proteins. The resulting membranes exhibited high intensity O-2 evolution in the presence of exogenous Ca2+, reaching about 80% of the rate in PSII(-Ca/low pH) membranes.
JOURNAL OF BIOLOGICAL INORGANIC CHEMISTRY
(2023)
Article
Plant Sciences
Aditya Kumar, Ankush Prasad, Michaela Sedlarova, Pavel Pospisil
Summary: Lipid peroxidation produces malondialdehyde (MDA) which binds to proteins and affects plant survival under stress. This study reveals the interaction between MDA and PsbP, an outer subunit of photosystem II, weakening its electrostatic interaction with core proteins.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Sikha Gupta, Pragya Arora, Rakesh Kumar, Ayushi Awasthi, Bittu Chandra, Raju Eerlapally, Jin Xiong, Yisong Guo, Lawrence Que, Apparao Draksharapu
Summary: Lewis acid-bound high valent Mn-oxo species, relevant to photosystem II, were synthesized and characterized. The unique [(BnTPEN)Mn(III)-O-Ce(IV)(NO3)4]+ adduct was obtained and analyzed using various spectroscopic techniques. The Mn(III)-O-Ce(IV) species exhibited O-atom and H-atom transfer reactions, as well as enhanced electron transfer efficiency towards ferrocenes.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Plant Sciences
Olli Virtanen, Sergey Khorobrykh, Esa Tyystjarvi
Summary: The study demonstrates that algae adapted to extreme high light can grow and thrive in such conditions, potentially involving genetic or epigenetic variations. In addition, extreme light acclimation is associated with a high carotenoid-to-chlorophyll ratio, slowed down PSII charge recombination reactions, and reduced levels of O-1(2).
PHOTOSYNTHESIS RESEARCH
(2021)
Article
Plant Sciences
Vesa Havurinne, Maria Handrich, Mikko Antinluoma, Sergey Khorobrykh, Sven B. Gould, Esa Tyystjarvi
Summary: The study reveals that the kleptoplastic sea slug Elysia chlorotica consumes plastids from Vaucheria litorea for photosynthesis, with specific genes showing slow transcription decrease in the isolated plastids. Higher levels of FtsH are observed in cycloheximide-treated cells during recovery from photoinhibition, and charge recombination in PSII of V. litorea produces only small quantities of singlet oxygen. These findings suggest that the genetic characteristics of the plastids are crucial in creating a photosynthetic sea slug with enhanced autonomous repair machinery.
JOURNAL OF EXPERIMENTAL BOTANY
(2021)
Article
Chemistry, Physical
Dmitry E. Burmistrov, Denis Yanykin, Mark O. Paskhin, Egor Nagaev, Alexey D. Efimov, Andrey Kaziev, Dmitry G. Ageychenkov, Sergey Gudkov
Summary: A technology has been developed for producing nanoscale-oriented nanorods from zinc oxide on an acrylic polymer, allowing different surface filling with nanorods, which are closely fused into the polymer and emit a wavelength suitable for photosynthesis. Potential applications include photonics, antibacterial coatings, and materials for plant growth.
Article
Agronomy
Denis V. Yanykin, Dmitriy E. Burmistrov, Alexander V. Simakin, Julia A. Ermakova, Sergey V. Gudkov
Summary: The study found that using glasses coated with up-converting luminescent nanoparticles for tomato cultivation can promote plant adaptation to ultraviolet radiation and accelerate the recovery time of photosynthesis. It also increases the leaf number, total leaf area, stem length, and chlorophyll content in plants.
Article
Chemistry, Multidisciplinary
Natalya A. Semenova, Alexandr A. Smirnov, Alina S. Ivanitskikh, Andrey Yu Izmailov, Alexey S. Dorokhov, Yuri A. Proshkin, Denis Yanykin, Ruslan R. Sarimov, Sergey Gudkov, Narek O. Chilingaryan
Summary: This study investigated the effects of additional UV radiation on sweet basil in terms of growth, pigment content, and essential oil accumulation. The results showed that additional UV-A and UV-B can enhance plant growth and increase leaf area, while UV-C mainly affects anthocyanin content. Furthermore, UV radiation also alters the composition of essential oil.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Multidisciplinary
Denis Yanykin, Mark O. Paskhin, Alexander Simakin, Dmitriy E. Burmistrov, Roman Pobedonostsev, Alexey A. Vyatchinov, Maria V. Vedunova, Sergey Kuznetsov, Julia A. Ermakova, Alexander A. Alexandrov, Alexey P. Glinushkin, Valery P. Kalinitchenko, Mars Khayrullin, Elena Kuznetsova, Mikhail Dubinin, Valery A. Kozlov, Nikolai F. Bunkin, Alexey Sibirev, Alexander G. Aksenov, Sergey Gudkov
Summary: This study examined the effect of upconversion nanopowders on the photochemistry of Solanum lycopersicum. It was found that glasses coated with upconversion luminophores can enhance the efficiency of plant photosynthesis and protect against ultraviolet radiation. Cultivating Solanum lycopersicum under photoconversion glasses showed better growth under stress conditions.
APPLIED SCIENCES-BASEL
(2022)
Article
Energy & Fuels
Natalya A. Semenova, Alexandr A. Smirnov, Alexey S. Dorokhov, Yuri A. Proshkin, Alina S. Ivanitskikh, Narek O. Chilingaryan, Artem A. Dorokhov, Denis V. Yanykin, Sergey V. Gudkov, Andrey Yu. Izmailov
Summary: This study aims to optimize the light spectrum and intensity used for red mustard growing. The results showed that the blue-red spectrum is the most effective lighting option for growing red mustard, as it has the highest efficiency in converting electricity into biomass. However, the presence of green and far red radiation has a negative effect on plant growth and photosynthetic activity.
Article
Materials Science, Composites
Alexander Simakin, Ruslan M. Sarimov, Veronika V. Smirnova, Maxim E. Astashev, Dmitriy A. Serov, Denis Yanykin, Denis N. Chausov, Alexey Shkirin, Oleg Uvarov, Evgeny Rotanov, Andrey Shakhovskoy, Vadim Bruskov, Vladimir E. Ivanov, Alexey S. Dorokhov, Andrey Y. Izmailov
Summary: The development of eco-friendly and biodegradable package materials is crucial in modern science and international industry. A new nanocomposite material based on PLGA and aluminum oxide (Al2O3) nanoparticles has been developed, which exhibits pronounced antibacterial properties and high biocompatibility. This material shows potential for use in building, food packaging, and agriculture.
JOURNAL OF COMPOSITES SCIENCE
(2022)
Article
Polymer Science
Dmitriy A. Serov, Ilya Baimler, Dmitriy E. Burmistrov, Alexey S. Baryshev, Denis Yanykin, Maxim E. Astashev, Alexander Simakin, Sergey Gudkov
Summary: Bacterial contamination in the meat processing industry, especially on cutting boards and equipment, is a major factor causing product deterioration and loss of consumer properties. To tackle this issue, two approaches can be adopted: creating coatings with increased strength to prevent the formation of favorable conditions for bacterial growth, or developing materials with antimicrobial properties. In this study, a new coating made of polytetrafluoroethylene (PTFE) and Fe2O3 nanoparticles was developed. The coating showed bacteriostatic effects and increased the generation of reactive oxygen species (ROS). The composite material has potential applications for covering cutting boards and polymeric surfaces in the meat processing industry.
Article
Materials Science, Multidisciplinary
Ruslan M. M. Sarimov, Alexey P. P. Glinushkin, Mikhail A. A. Sevostyanov, Sergey V. V. Konushkin, Dmitry A. A. Serov, Maxim E. E. Astashev, Vasily N. N. Lednev, Denis V. V. Yanykin, Alexey V. V. Sibirev, Alexander A. A. Smirnov, Ilya V. V. Baimler, Alexandr V. V. Simakin, Nikolay F. F. Bunkin, Sergey V. V. Gudkov
Summary: The research on the new alloy Ti-20Nb-10Ta-5Zr shows its potential as a construction material for environmentally neutral greenhouses, based on its high strength and biocompatibility.
Article
Chemistry, Multidisciplinary
Rostislav A. Filippov, Alexei Solovchenko, Dmitry Khort, Igor G. Smirnov, Alexey I. Kutyrev, Roman V. Pobedonostsev, Denis V. Yanykin
Summary: Electroimpedance spectroscopy technology can accelerate the healing of trees and assess plant condition after grafting. This study introduces a compact device that overcomes limitations of equipment complexity and measurement conditions. Cold atmospheric plasma (CAP) and plasma-treated solution (PTS) were used to treat pear grafts, promoting graft fusion and improving healing process. Impedance values showed better healing in plants treated with CAP and PTS compared to the control, indicating higher quality planting material can be obtained earlier than conventional methods.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Chemical
Mukhsindjan Kh. Ashurov, Erkindjan M. Ashurov, Maxim E. Astashev, Ilya V. Baimler, Sergey V. Gudkov, Evgeny M. Konchekov, Vasily N. Lednev, Natalya A. Lukina, Tatyana A. Matveeva, Anatoly G. Markendudis, Andrey V. Onegov, Dilbar K. Rashidova, Ruslan M. Sarimov, Konstantin F. Sergeichev, Shukhrat T. Sharipov, Alexander V. Simakin, Igor G. Smirnov, Sergey Y. Smolentsev, Muzzafar M. Yakubov, Denis V. Yanykin, Ivan A. Shcherbakov
Summary: A microwave setup for obtaining plasma-activated water (PAW) has been developed. PAW has specific chemical properties that depend on treatment time and can enhance seed germination and plant growth. The use of PAW provides more benefits compared to chemical preparations.
Article
Horticulture
Mark O. Paskhin, Denis V. Yanykin, Alexander V. Popov, Roman V. Pobedonostsev, Dina V. Kazantseva, Alexey S. Dorokhov, Andrey Yu. Izmailov, Alexey A. Vyatchinov, Elena O. Orlovskaya, Artem T. Shaidulin, Yurii V. Orlovskii, Vladimir A. Vodeneev, Sergey V. Gudkov
Summary: The effect of light conversion using europium (Eu(III))-based photoconversion covers on the cultivation of agricultural plants and their resistance to stress conditions was investigated. Two types of europium nanoparticles were used: europium oxide (Eu2O3) and Eu3+:LaF3 nanocrystals. Tomatoes and cucumbers were used as model plants. It was found that plants grown under Eu2O3 cover had higher growth, yield, and faster activation of gas exchange and photosynthesis, while plants grown under Eu3+:LaF3 cover showed slower biomass accumulation and decreased gas exchange activation, but increased resistance to high and low temperatures.
Article
Engineering, Multidisciplinary
Denis V. Yanykin, Maxim E. Astashev, Andrey A. Khorobrykh, Mark O. Paskhin, Dmitriy A. Serov, Sergey V. Gudkov
Summary: This manuscript describes the application of a fixed-length ultrasonic spectrometer to determine the kinetics of heat- and photo-induced damage to biological membranes and protein complexes. The study demonstrates the high sensitivity and accuracy of the modernized fixed-length ultrasonic spectrometer in measuring the phase state of liposomes and the changes in photosystem II core complexes.
Review
Horticulture
Mark O. Paskhin, Denis Yanykin, Sergey Gudkov
Summary: Modern agriculture heavily relies on smart and efficient technologies, including directed regulation of agricultural plant illumination. Farmers adjust the light shade and spectrum reaching the plants based on climatic conditions to enhance crop growth. This review provides an overview of solar light conversion methods and their implementation in agriculture, discussing their advantages and limitations.
Article
Biochemistry & Molecular Biology
Brandon P. Russell, David J. Vinyard
Summary: The Mn4CaO5 oxygen-evolving complex in Photosystem II is crucial for water oxidation. D1 residue R334 participates in proton release and interacts with PsbO. A D1-R334G mutant destabilizes the OEC but stabilizes the S2 intermediate.
BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS
(2024)
Article
Biochemistry & Molecular Biology
Alexander A. Bulychev, Tatiana S. Strelets
Summary: Excitable cells of higher plants and characean algae respond to stressful stimuli by generating action potentials that influence chlorophyll fluorescence and photosynthesis for an extended period of time. While plant leaves exhibit a reversible depression in the efficiency of photosystem II reaction after an individual action potential, characean algae show long-lasting oscillations of photosystem II reaction efficiency after firing an action potential. This study investigates the possible mechanisms behind these oscillations and suggests that they are a result of metabolic rearrangements in chloroplasts and the cyclosis cessation-recovery cycle induced by calcium influx during action potentials. The findings also indicate that fluidic communications between different cell regions play a role in these oscillations, and the inhibition of oscillations occurs when these communications are restricted or eliminated.
BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS
(2024)
Article
Biochemistry & Molecular Biology
Dmitry Zlenko, Elena A. Protasova, Georgy Tsoraev, Nikolai N. Sluchanko, Dmitry A. Cherepanov, Thomas Friedrich, Baosheng Ge, Song Qin, Eugene G. Maksimov, Andrew B. Rubin
Summary: The conformation of chromophores in isolated phycobiliproteins is heterogeneous, but not in the entire phycobilisome (PBS). Under low-energy excitation, there is no significant uphill energy transfer from the core to the peripheral rods of the PBS, while transfer from the terminal emitters to bulk allophycocyanin chromophores is highly probable.
BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS
(2024)
Article
Biochemistry & Molecular Biology
Makio Yokono, Chiyo Noda, Jun Minagawa
Summary: This paper investigates the energy transfer between Photosystem II and Photosystem I in Arabidopsis thaliana, and finds that the fast spillover is reversibly regulated depending on pH.
BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS
(2024)