Review
Plant Sciences
H. K. Lichtenthaler
Summary: Research has shown that fluorescence imaging of plant leaves can rapidly and accurately assess the photosynthetic activity of plants as well as the impact of various strains or stressors. This technique can detect physiological parameters in the early stages before visible damage to plants occurs and analyze plant health status through different fluorescence ratios, which is of significant importance.
Article
Chemistry, Analytical
Gerardo Grasso, Giulia Cocco, Daniela Zane, Chiara Frazzoli, Roberto Dragone
Summary: Using microalgae-based fluorimetric bioassays, the study investigated the impact of the phenylurea herbicide Diuron on the photosynthesis of a freshwater and soil model microalga. The results showed that Diuron had inhibitory effects on the photosynthetic process of the microalga.
Article
Biochemistry & Molecular Biology
Qing-Qing Zou, Dong-Huan Liu, Min Sang, Chuang-Dao Jiang
Summary: The study analyzed the leaf structure and chlorophyll a fluorescence induction kinetics (CFI) curves of sunflower and sorghum seedlings, revealing significant differences in sunflower leaf structures which may affect the shape of CFI curves. Differences in CFI curves between adaxial and abaxial sides of sunflower leaves decreased under weak light conditions.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Environmental Sciences
Tingting Gan, Gaofang Yin, Nanjing Zhao, Xiaoxuan Tan, Ying Wang
Summary: Heavy metals as toxic pollutants have significant impacts on microalgae photosynthesis, posing a serious threat to the aquatic ecosystem. This study investigated the effects of four typical toxic heavy metals on various photosynthetic fluorescence parameters of microalga Chlorella pyrenoidosa and identified the most suitable response index for sensitive detection of heavy metal toxicity.
Article
Biochemistry & Molecular Biology
Hikaru Endo, Hikari Moriyama, Yutaka Okumura
Summary: Plants and brown algae have photoprotective mechanisms to avoid photoinhibition caused by excess light and oxidative stress. This study found that NPQ increased under high light and nutrient-deficient conditions. However, nutrient deficiency had limited effects on photoprotective substances.
Article
Plant Sciences
Takako Ogawa, Kenta Suzuki, Kintake Sonoike
Summary: This study demonstrates the significant impact of NADPH redox state on chlorophyll fluorescence induction in cyanobacteria. The interaction between photosynthesis and respiration through NADPH provides a simple method for monitoring chlorophyll fluorescence induction in cyanobacteria.
FRONTIERS IN PLANT SCIENCE
(2021)
Article
Plant Sciences
Pavel Pashkovskiy, Vladimir Kreslavski, Alexandra Khudyakova, Aleksandr Ashikhmin, Maksim Bolshakov, Anna Kozhevnikova, Anatoly Kosobryukhov, Vladimir V. Kuznetsov, Suleyman Allakhverdiev
Summary: The study shows that tomato photomorphogenetic mutants exhibit different photosynthetic rates and pigment accumulations under conditions of high-intensity light, with hp-2 and hp-1.2 mutants showing a higher adaptation to high light environments.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2021)
Article
Agronomy
Paulina A. Rajewicz, Chao Zhang, Jon Atherton, Shari Van Wittenberghe, Anu Riikonen, Troy Magney, Beatriz Fernandez-Marin, Jose Ignacio Garcia Plazaola, Albert Porcar-Castell
Summary: Chlorophyll fluorescence can be used as a proxy for photosynthesis in boreal forests. This study measured the spectral chlorophyll fluorescence in leaves of three dominant evergreen species in the boreal ecosystem and analyzed the correlations with other traits to understand the spatial and temporal variation in chlorophyll fluorescence. The findings suggest that the diversity of species and light environments within an ecosystem generate baseline variation in leaf spectral chlorophyll fluorescence and contrasting seasonal photosynthetic acclimation patterns.
AGRICULTURAL AND FOREST METEOROLOGY
(2023)
Article
Biochemistry & Molecular Biology
Qi-Shi, Shi-Bao Zhang, Ji-Hua Wang, Wei Huang
Summary: The study showed that pre-illumination under high light conditions accelerates the activation rate of cyclic electron flow (CEF) and reduces the over-reduction of Photosystem I (PSI) under fluctuating light, by facilitating the electron sink downstream of PSI.
Article
Plant Sciences
Chung-I. Chen, Kuan-Hung Lin, Meng-Yuan Huang, Kuei-Yu Yao, Chau-Ching Huang, Tzu-Chao Lin, En-Liang Chu, Jia-Dong Yang, Ching-Wen Wang
Summary: The study aimed to measure the chlorophyll fluorescence (ChlF) parameters of Barbula indica and Conocephalum conicum under different light intensities (LI) to understand their adaptability to their habitats. The results showed that the electron transport rate (ETR) of all plants was highest under 500 PPFD conditions, indicating their optimal growth under specific light intensity. As LI increased, non-photochemical quenching (NPQ) and photo-inhibitory quenching (q(I)) increased, while photosystem II efficiency (phi PSII) and potential quantum efficiency of PSII (F-v/F-m) decreased in all plants. Energy-dependent quenching (q(E)), the light protection system (q(E) + q(Z) + q(T)), and q(I) increased under higher LI, suggesting higher photo-protective ability in these plants. Barbula indica remained photochemically active, while Conocephalum conicum exhibited higher photo-protection under certain LI conditions. These ChlF parameters can be used to predict photosynthetic responses in different bryophytes and contribute to ecological monitoring.
PHOTOSYNTHESIS RESEARCH
(2023)
Article
Plant Sciences
Zhu Cun, Xiang-Zeng Xu, Jin-Yan Zhang, Sheng-Pu Shuang, Hong-Min Wu, Tong-Xin An, Jun-Wen Chen
Summary: Photosynthetic adaptive strategies of shade-tolerant species Panax notoginseng to high and low light conditions were investigated. Growth irradiance affected the thickness of leaf tissues and the performance of photosynthesis-related pigments and antioxidant enzymes. The results suggest that PSI photoinhibition and photodamage to PSII acceptor side are key factors influencing the adaptability of P. notoginseng to different light regimes.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Chemistry, Analytical
Krzysztof Kutt, Dominika Drazyk, Szymon Bobek, Grzegorz J. Nalepa
Summary: This article proposes using personality assessment to adapt affective intelligent systems and verifies the potential of this adaptation mechanism through experiments linking personality traits to psychophysiological signals and reactions to complex stimulus environments.
Article
Agronomy
Zorana Katanic, Selma Mlinaric, Natasa Katanic, Josipa Cosic, Valentina Spanic
Summary: Research evaluated the photosynthetic efficiency of wheat during different stages of Fusarium head blight (FHB) infection, revealing that FHB infection leads to adjustments in photosynthetic efficiency. Variability in photosynthetic adjustments was observed in flag leaves and ears, showing some variety-specific responses, with location playing a more significant role in modulating wheat's response to FHB infection.
Article
Agronomy
Valentina Spanic, Selma Mlinaric, Zvonimir Zdunic, Zorana Katanic
Summary: This study aimed to evaluate the agronomical performance of three winter wheat varieties and test photosynthetic efficiency at two different locations. The results showed significant differences in grain yield of different varieties at different locations, with environmental factors such as precipitation and disease intensity affecting early senescence and reduced grain fill duration.
Article
Biochemistry & Molecular Biology
Bin Zheng, Wei Zhao, Tinghu Ren, Xinghui Zhang, Tangyuan Ning, Peng Liu, Geng Li
Summary: Densely planted maize improves light utilization under low light by increasing electron transport efficiency, promoting coordination between photosystem II and photosystem I.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Materials Science, Multidisciplinary
Sandor Lenk, Tamas Majoros, Szabolcs Beleznai, Ferenc Ujhelyi, Imre Peczeli, Zsolt Karda, Attila Barocsi
MATERIALS RESEARCH EXPRESS
(2018)
Article
Optics
O. C. Boros, A. C. Horvath, S. Beleznai, O. Sepsi, S. Lenk, Z. Fekete, P. Koppa
Article
Nanoscience & Nanotechnology
Zoltan Geczi, Peter Hermann, Laszlo Kohidai, Orsolya Lang, Zsofia Kohidai, Tamas Meszaros, Attila Barocsi, Sandor Lenk, Tivadar Zelles
JOURNAL OF NANOMATERIALS
(2018)
Article
Chemistry, Physical
David Beke, Anna Fucikova, Tibor Z. Janosi, Gyula Karolyhazy, Balint Somogyi, Sandor Lenk, Olga Krafcsik, Zsolt Czigany, Janos Erostyak, Katalin Kamaras, Jan Valenta, Adam Gali
JOURNAL OF PHYSICAL CHEMISTRY C
(2018)
Article
Chemistry, Physical
David Beke, Jan Valenta, Gyula Karolyhazy, Sandor Lenk, Zsolt Czigany, Bence Gabor Markus, Katalin Kamaras, Ferenc Simon, Adam Gali
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2020)
Article
Plant Sciences
S. Lenk, J. A. Dieleman, V. Lefebvre, E. Heuvelink, J. J. Magan, A. Palloix, F. A. Van Eeuwijk, A. Barocsi
Article
Chemistry, Multidisciplinary
Gyula Karolyhazy, David Beke, Dora Zalka, Sandor Lenk, Olga Krafcsik, Katalin Kamaras, Adam Gali
Article
Materials Science, Characterization & Testing
J. Molnar, Z. Zuba, O. Sepsi, F. Ujhelyi, G. Erdei, S. Lenk, A. Menyhard
Summary: This work compared and discussed various characterization methods and techniques for the supermolecular and lamellar structure of semicrystalline polymers, highlighting the advantages and drawbacks of different sample preparation and investigation methods. The results demonstrate how the introduced techniques can provide diverse information and emphasize the importance of matching experimental techniques with the structural study goals.
Article
Food Science & Technology
Borbala Gemes, Eszter Takacs, Patrik Gadoros, Attila Barocsi, Laszlo Kocsanyi, Sandor Lenk, Attila Csakanyi, Szabolcs Kautny, Laszlo Domjan, Gabor Szarvas, Nora Adanyi, Alexei Nabok, Maria Mortl, Andras Szekacs
Summary: Project Aquafluosense is focused on developing prototypes for a fluorescence-based instrumentation setup for in situ measurements of various water quality parameters, with a specific emphasis on detecting emerging pollutants like ZON. The ELFIA method developed in this project shows high sensitivity in detecting environmental xenobiotics, with the 96-well microplate-based fluorescence instrument being capable of detecting ZON in a concentration range of 0.09-400 ng/mL. This method demonstrates efficacy in combined in situ applications for determining important water quality parameters through induced fluorimetry.
Article
Biochemistry & Molecular Biology
Eszter Takacs, Borbala Gemes, Fanni Szendrei, Csaba Keszei, Attila Barocsi, Sandor Lenk, Laszlo Domjan, Maria Mortl, Andras Szekacs
Summary: This study developed an enzyme-linked fluorescent immunoassay (ELFIA) method to quantitatively determine the herbicide glyphosate in environmental matrices. The method showed improved sensitivity and a wider dynamic range compared to traditional methods.
Article
Chemistry, Multidisciplinary
Ferenc Koppany, Krisztian Benedek Csomo, Edvard Marton Varmuzsa, Eszter Bognar, Liza Pelyhe, Peter Nagy, Imre Kientzl, Daniel Szabo, Miklos Weszl, Gabor Dobos, Sandor Lenk, Gabor Erdei, Gabor Kiss, Lilien Nagy, Attila Sreter, Andrea Alexandra Belik, Zsuzsanna Toth, Janos Vag, Arpad Joob-Fancsaly, Zsolt Nemeth
Summary: Our research group developed a novel nano-pitted (NP) TiO2 surface on grade 2 titanium that showed good mechanical, osteogenic, and antibacterial properties; however, it showed weak hydrophilicity. To enhance the hydrophilicity without destroying the nano-topography, we investigated the effects of orthophosphoric and nitric acids on wettability. The ccH(3)PO(4) treatment significantly increased the wettability of the NP TiO2 surfaces and could be used in industrial-scale manufacturing of titanium implants.
Article
Environmental Sciences
Diana Lazar, Eszter Takacs, Maria Mortl, Szandra Klatyik, Attila Barocsi, Laszlo Kocsanyi, Sandor Lenk, Laszlo Domjan, Gabor Szarvas, Edina Lengyel, Andras Szekacs
Summary: Project Aquafluosense aimed to develop prototypes for a modular fluorescence-based instrumental setup for in situ measurement of major water quality parameters. A fluorometer was developed for algal density estimation based on the fluorescent excitation of chlorophyll. The experimental results showed strong and positive correlation with conventional methods and demonstrated the applicability of the developed fluorometer in algal toxicity screening.
Article
Chemistry, Multidisciplinary
Szabolcs Czene, Nikoletta Jegenyes, Olga Krafcsik, Sandor Lenk, Zsolt Czigany, Gabor Bortel, Katalin Kamaras, Janos Rohonczy, David Beke, Adam Gali
Summary: Silicon carbide nanoparticles (SiC NPs) are potential inorganic molecular-sized fluorescent biomarkers, and researchers have developed a method to directly introduce amino groups into aqueous SiC NPs. The applicability of amino-terminated SiC NPs is demonstrated by attaching bovine serum albumin, and it is found that the fluorescence intensity is highly sensitive to surface termination, which may have implications for nanometer-sized SiC NPs with optically read electron spins.
Article
Polymer Science
Janos Molnar, Ors Sepsi, Gabor Erdei, Sandor Lenk, Ferenc Ujhelyi, Alfred Menyhard
JOURNAL OF POLYMER SCIENCE
(2020)
Article
Chemistry, Multidisciplinary
Gergely Nemeth, Daniel Datz, Aron Pekker, Takeshi Saito, Oleg Domanov, Hidetsugu Shiozawa, Sandor Lenk, Bela Pecz, Pal Koppa, Katalin Kamaras