Article
Multidisciplinary Sciences
Giorgio Perin, Alessandra Bellan, Tim Michelberger, Dagmar Lyska, Setsuko Wakao, Krishna K. Niyogi, Tomas Morosinotto
Summary: Life on earth relies on photosynthetic primary producers, including microalgae, to convert sunlight and CO2 into biomass. Microalgae have the potential to be a valuable biomass source and contribute to a sustainable bioeconomy. This study investigates the role of the xanthophyll cycle in protecting microalgae from excess light and optimizing biomass productivity.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Plant Sciences
Norma Valeria Ahumada-Fierro, Ernesto Garcia-Mendoza, Jose Miguel Sandoval-Gil, Christine Johanna Band-Schmidt
Summary: The study found that the toxic potential of Chattonella is associated with high ROS production, possibly due to a lack of effective photoprotection mechanisms. The three strains of Chattonella exhibited different NPQ and XC characteristics under light conditions, with ROS production related to XC-related thermal dissipation.
JOURNAL OF PHYCOLOGY
(2021)
Review
Plant Sciences
Andrew J. Simkin, Leepica Kapoor, C. George Priya Doss, Tanja A. Hofmann, Tracy Lawson, Siva Ramamoorthy
Summary: Photosynthetic pigments, including chlorophyll, carotenoids, and phycobilins, are essential for efficient light absorption and adaptation to different environments in photosynthetic organisms. They play crucial roles in light harvesting, photoprotection, and deep water colonization.
PHOTOSYNTHESIS RESEARCH
(2022)
Article
Engineering, Environmental
Xiaofeng Liu, Aris P. Georgakakos
Summary: This study found that developing a bias correction method can lead to more accurate measurements of Chl-a concentration in freshwater lakes and reservoirs, improving the overall accuracy of current methods.
Review
Plant Sciences
Xiuxiu Li, Gongxian Yang, Xinyi Yuan, Fenghua Wu, Wenda Wang, Jian-Ren Shen, Tingyun Kuang, Xiaochun Qin
Summary: PSI plays a crucial role in photosynthesis with its high quantum efficiency and fast energy transfer speed. The study of its structure and function over the past decades has shed light on how energy is transferred in vascular plants, providing important insights for future research.
FUNCTIONAL PLANT BIOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Guenter G. Lehretz, Anja Schneider, Dario Leister, Uwe Sonnewald
Summary: Expression of VPZ genes in potato plants accelerates the induction and relaxation of photoprotection under various light conditions but does not improve photosynthetic rate or plant growth. Instead, tuber yield decreases under fluctuating light conditions. The negative effect may be due to reduced radiation use efficiency caused by strong NPQ induction under high light conditions.
JOURNAL OF INTEGRATIVE PLANT BIOLOGY
(2022)
Article
Plant Sciences
Jochen M. Buck, Peter G. Kroth, Bernard Lepetit
Summary: Photosynthetic organisms have evolved various photoprotective mechanisms to prevent high light-induced photodamage, among which energy-dependent fluorescence quenching (qE) serves as a rapid way to dissipate excess absorbed energy. Diatoms, as important primary producers, utilize Lhcx proteins and the xanthophyll cycle pigment diatoxanthin to provide qE. By studying the mechanisms of qE in diatoms, it was found that specific amino acids and peptide motifs play crucial roles in conferring qE, with a tryptophan residue identified as having a major influence on qE establishment. This structural explanation sheds light on the intimate link between Lhcx proteins and diatoxanthin in providing qE in diatoms.
Article
Biochemistry & Molecular Biology
R. Torres, J. M. Romero, M. G. Lagorio
Summary: The research examines the effects of sub-optimal illumination on three plant species by studying chlorophyll fluorescence. The findings show that low light treatment increases pigment content and maintains fluorescence ratios, suggesting conservation of photosystems stoichiometry. Different plant species respond differently to low light, with L. sativa adapting, A. hybridus not significantly stressed, and S. dendroideum decreasing antenna size but increasing quantum yield of primary photochemistry.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
(2021)
Article
Plant Sciences
Collin J. Steen, Adrien Burlacot, Audrey H. Short, Krishna K. Niyogi, Graham R. Fleming
Summary: This study monitored non-photochemical quenching (NPQ) in intact cells throughout high light/dark cycles of various illumination periods and found that the dynamics of NPQ depend on the timescales of light fluctuations. LHCSR proteins play a major role during the light phases, while state transition activation contributes to NPQ response during dark phases.
PLANT CELL AND ENVIRONMENT
(2022)
Article
Environmental Sciences
Guo-Ning Nan, Xiao-Qun Zhou, Xiu-Mei Zhang, Quan-Sheng Zhang, Zi-Min Hu, Rui-Ping Huang, Di Zhang
Summary: This study demonstrates that xanthophyll cycle-induced non-photochemical quenching (NPQ) can effectively protect Sargassum thunbergii from light fluctuations in the intertidal zone.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Plant Sciences
L. H. Tran, D. G. Lee, S. Jung
Summary: Our study reveals that specific wavelengths of different LEDs have differential effects on photosynthetic performance, photoprotection, and antioxidant properties, possibly by regulating the expression of phytochrome and cryptochrome genes in a light-quality-dependent manner.
Article
Plant Sciences
Anirban Guha, Talent Vharachumu, Muhammad F. Khalid, Mark Keeley, Thomas J. Avenson, Christopher Vincent
Summary: This study using citrus as a model plant sheds light on the basic mechanisms of photosynthetic adaptation in tropical evergreen species, revealing significant genotypic differences in photosynthetic thermotolerance and different responses to short-term warming and postwarming events.
PLANT CELL AND ENVIRONMENT
(2022)
Article
Plant Sciences
Marguerite Cinq-Mars, Guy Samson
Summary: This study revealed that the decline in CO2 assimilation at frequencies of 10 Hz and lower was associated with the formation of nonphotochemical quenching (NPQ) and a restriction of electron flows toward PSI. The results suggest that under these conditions, there is a favoring of accumulation of harmless P-700(+) at the expense of decreased quantum yield of photochemistry for PSII.
Article
Plant Sciences
Manu Khajuria, Sumit Jamwal, Villayat Ali, Aatif Rashid, Sheenam Faiz, Dhiraj Vyas
Summary: Plants growing in high altitude Ladakh Himalayas exhibit significant physiological adaptations to short term temperature fluctuations, including modulation of photosynthesis, stomatal opening, energy fluxes, and non-photochemical quenching. These mechanisms enhance plant tolerance to high temperatures and mitigate the harmful effects on photosynthesis.
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
(2021)
Article
Biochemistry & Molecular Biology
Setareh Jamali Jaghdani, Peter Jahns, Merle Traenkner
Summary: This study investigated the impact of varying magnesium concentrations on barley photosynthetic efficiency and photoprotective responses, revealing that CO2 assimilation is more sensitive to reduction of tissue magnesium concentrations, while supply with lower magnesium concentrations induced photo oxidative stress.
Article
Plant Sciences
Hristina Staleva-Musto, Valentyna Kuznetsova, David Bina, Radek Litvin, Tomas Polivka
PHOTOSYNTHESIS RESEARCH
(2020)
Article
Multidisciplinary Sciences
Francesco Saccon, Milan Durchan, David Bina, Christopher D. P. Duffy, Alexander Ruban, Tomas Polivka
Article
Chemistry, Physical
Tuhin Khan, Radek Litvin, Vaclav Sebelik, Tomas Polivka
Summary: The study found that after excess energy excitation, there is a clear increase in the S* signal of carotenoids, accompanied by an extended S* lifetime. This suggests that excess energy excitation increases the energy stored in molecular vibrations, potentially bypassing certain excited states pathways.
Article
Biochemistry & Molecular Biology
Michal Koblizek, Marko Dachev, David Bina, Nupur, Kasia Piwosz, David Kaftan
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
(2020)
Article
Microbiology
Karel Kopejtka, Juergen Tomasch, Yonghui Zeng, Vadim Selyanin, Marko Dachev, Kasia Piwosz, Martin Tichy, David Bina, Zdenko Gardian, Boyke Bunk, Henner Brinkmann, Robert Geffers, Ruben Sommaruga, Michal Koblizek
Article
Microbiology
Eva Binova, David Bina, Eva Nohynkova
Summary: Under environmental stress, vegetative cells of facultative pathogenic amoeba Acanthamoeba castellanii can differentiate into dormant stages, cysts or pseudocysts, with differentiation linked to cell cycle progression and DNA content. Flow cytometry analysis showed that encystation begins from G2 phase, while differentiation into pseudocysts can start in G1 and G2 phases, accompanied by the presence of key cell cycle regulators in the genome of A. castellanii.
EUROPEAN JOURNAL OF PROTISTOLOGY
(2021)
Article
Multidisciplinary Sciences
Tomas Malina, Rob Koehorst, David Bina, Jakub Psencik, Herbert van Amerongen
Summary: Chlorosomes, the main light-harvesting complexes of green photosynthetic bacteria adapted to low-light conditions, exhibit excitonic interactions and superradiance, enhancing the probability of excitation energy transfer.
SCIENTIFIC REPORTS
(2021)
Correction
Multidisciplinary Sciences
Tomas Malina, Rob Koehorst, David Bina, Jakub Psencik, Herbert van Amerongen
SCIENTIFIC REPORTS
(2021)
Article
Biochemistry & Molecular Biology
Noelia Jaime-Perez, David Bina, David Kaftan, Syed Nadeem Hussain Bokhari, Hendrik Kupper
Summary: This study investigated the mechanisms of copper toxicity on the photosynthetic apparatus of Acidiphilium rubrum and compared it with a common bacterium, revealing that A. rubrum is more resistant to copper toxicity. The research highlights the protective role of [Zn]-BChl in safeguarding the photosynthetic apparatus from detrimental impacts of copper.
BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS
(2021)
Article
Chemistry, Physical
Mindaugas Macernis, Simona Streckaite, Radek Litvin, Andrew A. Pascal, Manuel J. Llansola-Portoles, Bruno Robert, Leonas Valkunas
Summary: In this study, the absorption and vibrational properties of allene-containing carotenoids were experimentally investigated. The electronic properties of vaucheriaxanthin were successfully explained by calculations, while fucoxanthin and butanoyloxyfucoxanthin required long-range corrections to accurately determine their absorption position. Resonance Raman spectra of these carotenoids were perturbed by the presence of the allene group, which could be attributed to the increased Raman intensity of the C=C antisymmetric stretching mode in the carotenoid chain.
JOURNAL OF PHYSICAL CHEMISTRY A
(2022)
Article
Multidisciplinary Sciences
Petra Skotnicova, Hristina Staleva-Musto, Valentyna Kuznetsova, David Bina, Minna M. Konert, Shan Lu, Tomas Polivka, Roman Sobotka
Summary: Plant LHC-like proteins can quench chlorophyll fluorescence by direct energy transfer to zeaxanthin, and they are stabilized by associated pigments, playing a photoprotective role in photosynthesis.
NATURE COMMUNICATIONS
(2021)
Article
Plant Sciences
Jana Knoppova, Roman Sobotka, Jianfeng Yu, Martina Beckova, Jan Pilny, Joko P. Trinugroho, Ladislav Csefalvay, David Bina, Peter J. Nixon, Josef Komenda
Summary: Analysis of isolated assembly complexes provides new insights into the early stages of photosystem II biogenesis. These complexes contain information about the PSII subunits and proteins and assembly factors associated with its assembly process.
Correction
Multidisciplinary Sciences
Petra Skotnicova, Hristina Staleva-Musto, Valentyna Kuznetsova, David Bina, Minna M. Konert, Shan Lu, Tomas Polivka, Roman Sobotka
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Maria Agustina Dominguez-Martin, Paul Sauer, Henning Kirst, Markus Sutter, David Bina, Basil J. Greber, Eva Nogales, Tomas Polivka, Cheryl A. Kerfeld
Summary: In this study, the structures of Phycobilisome (PBS) in cyanobacteria were solved using cryogenic electron microscopy. The researchers discovered a previously unknown linker protein and revealed different conformational states of the antenna. Moreover, they elucidated the energy transfer pathways within PBS and provided insights into the control of cyanobacterial light harvesting, which has implications for bioengineering light-harvesting systems.
Article
Biochemistry & Molecular Biology
Frantisek Adamec, Domenica Farci, David Bina, Radek Litvin, Tuhin Khan, Marcel Fuciman, Dario Piano, Tomas Polivka
PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES
(2020)
