Article
Plant Sciences
Beat Keller, Lars Zimmermann, Uwe Rascher, Shizue Matsubara, Angelina Steier, Onno Muller
Summary: Photosynthesis rapidly adapts to fluctuating environments to optimize sunlight energy absorption, with high-efficiency genotypes successfully converting photochemical energy uptake into biomass production. Monitoring photochemical energy uptake allows for estimating biomass production and identifying energy-efficient genotypes for improved crop growth models and ecosystem productivity estimates.
Article
Plant Sciences
Jared T. Broddrick, Maxwell A. Ware, Denis Jallet, Bernhard O. Palsson, Graham Peers
Summary: Characterizing photosynthetic productivity is crucial for understanding the ecological contributions and biotechnology potential of plants, algae, and cyanobacteria. This study combines chlorophyll fluorescence parameters with a metabolic model to improve predictive accuracy and explore engineering strategies for rerouting cellular resources and excess light energy. The research reveals the rapid photoacclimation strategy of the diatom Phaeodactylum tricornutum and its potential applications in engineering light-driven metabolism.
Article
Multidisciplinary Sciences
Piotr Dabrowski, Anna Jadwiga Keutgen, Norbert Keutgen, Edyta Sierka, Aneta Helena Baczewska-Dabrowska, Jacek Mojski, Bogumila Pawluskiewicz, Leszek Sieczko, Hazem M. Kalaji
Summary: The objective of this study was to analyze the photosynthetic efficiency of perennial ryegrass seedlings under stress from cadmium and nickel. The activity of photosystem II and photosystem I decreased, likely due to increased nonradiative dissipation, decreased antenna size, or decreased number of photosynthetic complexes. Electron transport efficiency was also reduced. The modulated reflectance signal suggested a restriction in electron flow. The correlation between photosynthetic efficiency parameters and growth parameters indicated that some parameters could be used to detect heavy metal effects early on.
SCIENTIFIC REPORTS
(2023)
Article
Plant Sciences
Nicolas Zendonadi dos Santos, Hans-Peter Piepho, Giuseppe Emanuele Condorelli, Eder Licieri Groli, Maria Newcomb, Richard Ward, Roberto Tuberosa, Marco Maccaferri, Fabio Fiorani, Uwe Rascher, Onno Muller
Summary: The study utilized the LIFT sensor to quantify photosynthesis traits in durum wheat genotypes under progressive drought conditions, revealing that ChlF traits undergo short- and long-term changes in response to soil water availability and weather fluctuations.
PLANT CELL AND ENVIRONMENT
(2021)
Article
Engineering, Environmental
Lecheng Liu, Guangfei Liu, Jiti Zhou, Ruofei Jin
Summary: This study found that electroactive bacteria with higher Fe(III) reduction abilities demonstrate greater retention in ferrihydrite-coated sand in porous media. Increasing the concentrations of electron donor, shuttle, and acceptor significantly reduced the mobility of Shewanella oneidensis MR-1 through redox-active porous media.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Suhailar Sma-Air, Raymond J. Ritchie
Summary: The study compares in vivo absorbance information of various photosynthetic organisms and finds that some organisms, particularly cyanobacteria, cannot be measured for Photosynthetic Electron Transport Rate using PAM technology. By comparing fluorescence data and primary photosynthetic pigments of different oxygenic and nonoxygenic photo-organisms, the study aims to explain why PAM technology fails on certain organisms.
PHOTOCHEMISTRY AND PHOTOBIOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Martin A. Stefanov, Georgi D. Rashkov, Ekaterina K. Yotsova, Anelia G. Dobrikova, Emilia L. Apostolova
Summary: The present study demonstrates the impact of salinity on the functions of thylakoid membranes in two hybrid lines of Paulownia. Short-term treatment with higher NaCl concentration inhibits the photochemical activities of both photosystems. The experimental results also indicate that Paulownia tomentosa x fortunei can adapt to a higher concentration of NaCl, while it is lethal for Paulownia elongate x elongata.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Physical
Kangwei Wang, Huaxi Huang, Ke Xu, Shaoqian Peng, Xiaoxiao You, Xingyu Chen, Jingwen Xu, Di Wu, Jianlong Xia
Summary: Bay-annulated indigo (BAI) is a new potential building block for highly stable singlet fission materials. A new design strategy using charge transfer interaction was developed to tune the exciton dynamics of BAI derivatives. Experimental results show that strong donor-acceptor interactions lead to low-lying CT states that act as trap states and inhibit the singlet fission process.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Plant Sciences
Srinivasa R. Pinnamaneni, Saseendran S. Anapalli, Krishna N. Reddy
Summary: This study examines the gas exchange and chlorophyll fluorescence parameters of cotton and soybean under different irrigation levels and planting geometries. The results show that under moisture deficit conditions, soybean preferentially uses non-photochemical energy dissipation while cotton uses both photochemical and non-photochemical energy dissipation to protect the photosynthetic centers.
FRONTIERS IN PLANT SCIENCE
(2022)
Article
Plant Sciences
Andrew J. Simkin, Mohammed Alqurashi, Patricia E. Lopez-Calcagno, Lauren R. Headland, Christine A. Raines
Summary: In plants, glyceraldehyde-3-phosphate dehydrogenase (GAPDH) plays an important role in photosynthesis, and it is assembled into a homotetramer (A4) or a heterotetramer (A2B2) from GAPA and GAPB subunits. By reducing the levels of GAPA and GAPB proteins, it was found that the GAPA homotetramer can compensate for the loss of GAPB, but GAPB alone cannot fully compensate for the loss of the GAPA subunit.
Article
Chemistry, Multidisciplinary
Mariam Bayoumi, Stefanos K. Nomidis, Kherim Willems, Enrico Carlon, Giovanni Maglia
Summary: The synthetic nanoscale piston presented in the study uses chemical energy to transport molecules against applied bias, allowing for selected DNA molecules to be transported across a nanopore through hybridization and strand displacement reactions. The device demonstrates multiple automated and reciprocating cycles without the need for external bias force, exhibiting characteristics of biological transporters.
Article
Plant Sciences
Nima P. Saadat, Tim Nies, Marvin van Aalst, Brandon Hank, Busra Demirtas, Oliver Ebenhoeh, Anna Matuszynska
Summary: This study focuses on the central role of Photosystem I (PSI) in supplying energy and regulating reactive oxygen species (ROS) production in the course of photosynthesis. Through computational modeling, the researchers predict flux distributions through alternative electron pathways under various environmental stress conditions and investigate the impact of these stressors on PSI activity and metabolic productivity.
FRONTIERS IN PLANT SCIENCE
(2021)
Review
Plant Sciences
Ginga Shimakawa
Summary: This review summarizes the molecular mechanisms of electron transport in cyanobacterial thylakoid membranes to enhance our understanding of the complexity of cyanobacterial electron transport. Cyanobacteria are the simplest oxygenic phototrophs structurally, but the regulation of their photosynthesis is challenging due to the shared thylakoid membranes and cytosolic space for photosynthetic and respiratory processes. The review aims to summarize the molecular mechanisms and in vivo activities of electron transport in cyanobacterial thylakoid membranes based on the latest research progress in photosynthesis.
JOURNAL OF EXPERIMENTAL BOTANY
(2023)
Article
Plant Sciences
Shugao Fan, Erick Amombo, Sheila Avoga, Yating Li, Yanling Yin
Summary: In this study, the authors used RNA sequencing to analyze miRNAs in bermudagrass genotypes with contrasting salt tolerance. They found that 536 miRNA variants were salt-inducible, with the majority being downregulated in salt-tolerant varieties. They also discovered that miRNA171f targeted genes involved in photosynthesis and improved photosynthetic performance and dry matter accumulation under saline conditions. This study has important implications for breeding crops with enhanced salt tolerance and photosynthetic capacity.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Chemistry, Physical
Qixin Zhuang, Huaxin Wang, Cong Zhang, Cheng Gong, Haiyun Li, Jiangzhao Chen, Zhigang Zang
Summary: In this study, an ion diffusion-induced double layer doping strategy was reported to improve the electric properties and stability of PSCs, leading to a higher power conversion efficiency of 21.31% and improved ambient stability compared to control devices. This work demonstrates a simple and effective method to advance the development of perovskite photovoltaics.
Article
Plant Sciences
Eduardo Caffagni Camargo, Raquel Andrade Rossi, Jaqueline Carmo Silva, Adriana Cristina Poli Miwa, Ondrej Prasil, Maria do Carmo Calijuri, Ana Teresa Lombardi
Summary: This study compared PAM fluorometry and C-14 uptake techniques to estimate carbon fixation in Chlorella vulgaris, finding a high correlation between key parameters from both methods.
EUROPEAN JOURNAL OF PHYCOLOGY
(2022)
Article
Plant Sciences
Todd C. LaJeunesse, Joerg Wiedenmann, Pilar Casado-Amezua, Isabella D'Ambra, Kira E. Turnham, Matthew R. Nitschke, Clinton A. Oakley, Stefano Goffredo, Carlos A. Spano, Victor M. Cubillos, Simon K. Davy, David J. Suggett
Summary: The genus Philozoon, characterized by a symbiotic relationship with temperate invertebrates, has been identified and named using a term discarded from the golden age of Natural Historians. This lineage, closely related to Symbiodinium, thrives in shallow temperate marine habitats in the northern and southern hemispheres. Each symbiont species in the genus displays high host fidelity for specific species of sea anemone, soft coral, stony coral, and rhizostome jellyfish.
EUROPEAN JOURNAL OF PHYCOLOGY
(2022)
Article
Biodiversity Conservation
Kate M. Quigley, Margaux Hein, David J. Suggett
Summary: Efforts to protect and restore ecosystems globally are increasing, but there is a lack of clear framework for restoring coral reefs. This article proposes adopting lessons from terrestrial ecosystem restoration to accelerate coral reef restoration and summarizes the specific steps for reef restoration as a management strategy.
CONSERVATION BIOLOGY
(2022)
Article
Environmental Sciences
William Leggat, Scott F. Heron, Alexander Fordyce, David J. Suggett, Tracy D. Ainsworth
Summary: Despite decades of research into coral bleaching, a standardized metric for comparing ecological observations and experimental simulations is still lacking. The introduction of the experimental Degree Heating Week (eDHW) metric aims to standardize the variable thermal conditions employed in experimental studies of coral bleaching.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Multidisciplinary Sciences
Emma F. Camp, Tim Kahlke, Brandon Signal, Clinton A. Oakley, Adrian Lutz, Simon K. Davy, David J. Suggett, William P. Leggat
Summary: The Symbiodiniaceae are a diverse family of marine dinoflagellates that have a symbiotic relationship with invertebrates. They are sensitive to thermal stress, and research shows that this sensitivity is influenced by both phylogenetic dependent and independent traits. To understand the drivers of Symbiodiniaceae heat stress tolerance, researchers have provided a dataset that includes transcriptome, metabolome, and proteome data.
Article
Geography, Physical
Mortimer Werther, Daniel Odermatt, Stefan G. H. Simis, Daniela Gurlin, Daniel S. F. Jorge, Hubert Loisel, Peter D. Hunter, Andrew N. Tyler, Evangelos Spyrakos
Summary: This study characterized the uncertainties of remote sensing products for phytoplankton chlorophyll-a (chla) concentration in oligotrophic and mesotrophic lakes and reservoirs using 13 existing algorithms. The results showed substantial retrieval inaccuracies, but improvements in accuracy were observed with specific sensor configurations and machine learning models.
ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING
(2022)
Article
Limnology
Andrew J. Bramburger, Ted Ozersky, Greg M. Silsbe, Christopher J. Crawford, Leif G. Olmanson, Kirill Shchapov
Summary: As surface temperatures rise due to climate change, the effects on temperate lakes are expected to be more significant. However, the impact of changing snow and ice cover on lake communities is not well understood. This study investigated the underwater light climate and primary productivity patterns in six inland lakes in Minnesota, USA, under different water column properties. The results showed that snow cover not only affected the intensity but also the spectral signature of light in the lakes. The findings suggest that climate change-induced changes in snow and ice cover could impact phytoplankton primary productivity in sensitive aquatic ecosystems.
Article
Biodiversity Conservation
Gary Free, Mariano Bresciani, Monica Pinardi, Stefan Simis, Xiaohan Liu, Clement Albergel, Claudia Giardino
Summary: Compounded weather events such as sequential heatwaves are likely to have an increasing impact on freshwater ecosystems, especially lakes. During a double heatwave event in 2019, deep and medium depth lakes in higher latitudes showed a synchronous increase in chlorophyll-a concentration with temperature, while shallow lakes displayed a less synchronous response.
ECOLOGICAL INDICATORS
(2022)
Article
Environmental Sciences
Mortimer Werther, Daniel Odermatt, Stefan G. H. Simis, Daniela Gurlin, Moritz K. Lehmann, Tiit Kutser, Remika Gupana, Adam Varley, Peter D. Hunter, Andrew N. Tyler, Evangelos Spyrakos
Summary: In this study, Bayesian probabilistic neural networks (BNNs) were developed for estimating chlorophyll-a concentration (chla) in oligotrophic and mesotrophic lakes. The BNNs provided per-pixel uncertainty percentages and were evaluated through various assessments. The results showed that the BNNs achieved higher accuracy in oligotrophic waters, but the accuracy decreased as nutrient levels increased. The study also demonstrated the importance of uncertainty estimation in improving the quality of the chla result.
REMOTE SENSING OF ENVIRONMENT
(2022)
Article
Chemistry, Analytical
Emilie Courtecuisse, Elias Marchetti, Kevin Oxborough, Peter D. D. Hunter, Evangelos Spyrakos, Gavin H. H. Tilstone, Stefan G. H. Simis
Summary: This study evaluates the diagnostic ability of the LabSTAF, a new active fluorometer, to assess the physiology of cyanobacteria in a reservoir with annual blooms. The correlation between relative cyanobacteria abundance and photosynthetic parameters derived from fluorescence light curves (FLCs) using different excitation wavebands and excitation spectra was analyzed. The F-o(730/685) obtained from the GOR excitation wavebands showed a significant correlation with cyanobacteria abundance. It is recommended to measure F-o(GOR, 730/685), PSII excitation spectra, and physiological parameters from FLCs obtained with GOR and B protocols to assess the physiology and predict the growth of cyanobacteria. Increasing the intensity of LEDs (G and O) is suggested to improve the diagnostic sensitivity to cyanobacteria.
Article
Multidisciplinary Sciences
Laura Carrea, Jean-Francois Cretaux, Xiaohan Liu, Yuhao Wu, Beatriz Calmettes, Claude R. Duguay, Christopher J. Merchant, Nick Selmes, Stefan G. H. Simis, Mark Warren, Herve Yesou, Dagmar Mueller, Dalin Jiang, Owen Embury, Muriel Berge-Nguyen, Clement Albergel
Summary: This dataset presents a consistent collection of satellite observations for lake surface water temperature, ice cover, water-leaving reflectance, water level, and extent. The observations span from 1992 to 2020 and cover over 2000 large lakes, representing a significant portion of global freshwater surface. The dataset, validated against in situ measurements, provides the most complete and consistent satellite observations of the Lakes Essential Climate Variable (ECV) available.
Article
Biodiversity Conservation
Lorna Howlett, Emma F. Camp, John Edmondson, Russell Hosp, Ben Taylor, Philip Coulthard, David J. Suggett
Summary: Tourism-led stewardship projects in the Great Barrier Reef have implemented coral propagation and out-planting practices to improve ecosystem function. Benthic surveys conducted over a 24-month period showed significant increases in hard coral cover at some out-planting sites, particularly for commonly out-planted genera. Despite variations in coral community responses, this tourism-led approach has demonstrated potential for increasing hard coral cover through coral propagation.
BIOLOGICAL CONSERVATION
(2023)
Article
Multidisciplinary Sciences
Naaman. M. M. Omar, Katherine Fleury, Brian Beardsall, Ondrej Prasil, Douglas. A. A. Campbell
Summary: Marine phytoplankton produce and scavenge Reactive Oxygen Species (ROS) to support cellular processes, but some prokaryotic picophytoplankton have lost genes encoding ROS scavenging. The allocation of genomic capacity for ROS metabolism varies with cell radius, with larger cells having decreased allocations for hydrogen peroxide production and scavenging. Nitric oxide production and scavenging are not influenced by cell radius, but the presence of these capacities is influenced by flagella and colony formation.
Correction
Biology
Takako Masuda, Keisuke Inomura, Naoto Takahata, Takuhei Shiozaki, Yuji Sano, Curtis Deutsch, Ondrej Prasil, Ken Furuya
COMMUNICATIONS BIOLOGY
(2023)
Article
Remote Sensing
Dalin Jiang, Jorrit Scholze, Xiaohan Liu, Stefan G. H. Simis, Kerstin Stelzer, Dagmar Mueller, Peter Hunter, Andrew Tyler, Evangelos Spyrakos
Summary: This study proposes a new method to identify the effects of land on satellite remote sensing of water quality. The results show that the land-affected signal leads to underestimations of chlorophyll-a concentration and Forel-Ule color indices, and overestimations of turbidity.
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
(2023)