Article
Chemistry, Analytical
Lu Han, Pei-Feng Li, Chun-Ying Liu, Gui-Peng Yang
Summary: Blooms of Ulva prolifera have been recurring annually in the Yellow Sea since 2007, causing significant economic losses and severe ecological problems. Laboratory experiments showed that increased temperature and nutrient concentrations promoted the decay of U. prolifera, resulting in changes to the emission of biogenic sulfur compounds. These findings provide insights into the environmental impact of green tide and the potential consequences of sulfur compounds on the ecosystem.
ENVIRONMENTAL CHEMISTRY
(2021)
Article
Environmental Sciences
Kitack Lee, Jun-Seok Kim, Ki-Tae Park, Min-Ji Park, Eunho Jang, Kristinn Gudmundsson, Solveig R. Olafsdottir, Jon Olafsson, Young Jun Yoon, Bang -Yong Lee, Sae Yun Kwon, Jonghun Kam
Summary: In two spring blooms in the Icelandic Sea, the concentrations of chlorophyll-a and DMSP, as well as the DMSP lyase activity, were measured. The distribution of ocean parameters related to biology showed associations, but the statistical significance of the association varied between different ocean domains and years. The dominance of DMSP-rich phytoplankton indicated that variations in these organisms were likely a main factor influencing the statistical significance. The study also demonstrated the consistency between DMS production capacity and in situ ocean S data.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Lei Xue, David J. Kieber
Summary: Research has identified a new source of acrylate in seawater as a product of the photolysis of dissolved organic matter (DOM). Photochemical production rates are positively correlated with seawater absorption coefficient and are mainly initiated by UV radiation, with UV-B and UV-A contributing to the total production.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Environmental Sciences
Marta Masdeu-Navarro, Jean-Francois Mangot, Lei Xue, Miguel Cabrera-Brufau, Stephanie G. Gardner, David J. Kieber, Jose M. Gonzalez, Rafel Simo
Summary: Volatile organic compounds (VOCs) are found in marine ecosystems, including coral reefs, but their light-driven dynamics are poorly understood. A study in French Polynesia found that VOC and DMSPC concentrations varied with microbial abundances in coral reefs.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Bhagyashri R. Naik, Mangesh U. Gauns, Damodar M. Shenoy
Summary: The study reveals that the marine phytoplankton produces a dominant biogenic sulphur anti-greenhouse gas known as dimethylsulphide (DMSP). It shows that DMSP concentration increases during different growth stages and reaches its maximum during the stationary phase. Exposure to first light after a dark phase or early mornings leads to elevated levels of DMS.
MARINE POLLUTION BULLETIN
(2023)
Article
Microbiology
Zhao-Jie Teng, Qi-Long Qin, Weipeng Zhang, Jian Li, Hui-Hui Fu, Peng Wang, Musheng Lan, Guangfu Lu, Jianfeng He, Andrew McMinn, Min Wang, Xiu-Lan Chen, Yu-Zhong Zhang, Yin Chen, Chun-Yang Li
Summary: This study provides a global overview of the biogeographic traits of known bacterial genes involved in DMS/DMSP cycling in the Arctic and Antarctic oceans. It reveals that intense DMS/DMSP cycling occurs in polar oceans, with specific microbial enzymes playing key roles. The microbial assemblages in polar oceans are shaped more by water depth than geographic distance, suggesting habitat differences are crucial factors in shaping microbial communities involved in DMS/DMSP cycling.
Article
Environmental Sciences
Jinmei Li, Jonathan Todd, Zhisheng Yu
Summary: This study investigated the ability of four bacterial strains to produce and degrade DMSP, and found that under certain conditions, DMSP production reached its peak. Furthermore, these bacterial strains were also involved in the production of DMS. This research contributes to the understanding of the genes involved in DMSP biosynthesis in bacteria that produce DMSP.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Plant Sciences
Petra D'Odorico, Leonie Schoenbeck, Valentina Vitali, Katrin Meusburger, Marcus Schaub, Christian Ginzler, Roman Zweifel, Vera Marjorie Elauria Velasco, Jonas Gisler, Arthur Gessler, Ingo Ensminger
Summary: Monitoring tree physiological responses to drought using drone-based remote sensing and PRI revealed that non-irrigated trees showed higher stress levels compared to irrigated trees. Long-term acclimation influenced the seasonal relationship between PRI and soil water availability. This study demonstrates the importance of remote sensing techniques in scaling tree responses to drought stress and the persistence of legacy effects even after irrigation cessation.
PLANT CELL AND ENVIRONMENT
(2021)
Article
Microbiology
Jingli Liu, Chun-Xu Xue, Jinyan Wang, Andrew T. Crombie, Ornella Carrion, Andrew W. B. Johnston, J. Colin Murrell, Ji Liu, Yanfen Zheng, Xiao-Hua Zhang, Jonathan D. Todd
Summary: This study used a novel DNA-SIP approach to identify key microorganisms actively utilizing DMSP and DMS as carbon sources in marine environments. The findings highlight the diversity in microbial utilization of DMSP and the complexity of pathways involved, emphasizing the importance of microbial identification in marine environments.
Article
Multidisciplinary Sciences
Yu Bai, Tianjun Cao, Oliver Dautermann, Paul Buschbeck, Michael B. Cantrell, Yinjuan Chen, Christopher D. Lein, Xiaohuo Shi, Maxwell A. Ware, Fenghua Yang, Huan Zhang, Lihan Zhang, Graham Peers, Xiaobo Li, Martin Lohr
Summary: Fucoxanthin is a major light-harvesting pigment in ecologically important algae. The biosynthetic pathway of fucoxanthin has been identified by studying knockout mutants of the diatom Phaeodactylum tricornutum. The pathway is more complex than expected and involves the metabolism of diadinoxanthin as a central regulatory hub. The study also reveals the evolution of genes for xanthophyll cycle enzymes and the alternative pathway in brown algae.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Forestry
Marco A. Molina-Montenegro, Cristian Atala, Fernando Carrasco-Urra
Summary: The study indicated that solar eclipses have a negative impact on the photosynthesis of Chilean tree species, especially for species with lower shade tolerance. Different tree species showed varying responses in photosynthetic performance before and after the eclipse, reflecting distinct patterns of de-epoxidation.
Article
Plant Sciences
Renata Welc, Rafal Luchowski, Dariusz Kluczyk, Monika Zubik-Duda, Wojciech Grudzinski, Magdalena Maksim, Emilia Reszczynska, Karol Sowinski, Radoslaw Mazur, Artur Nosalewicz, Wieslaw I. Gruszecki
Summary: The research conducted with Arabidopsis thaliana revealed the synergistic effect of zeaxanthin and PsbS, showing that PsbS interferes with the formation of densely packed aggregates of thylakoid membrane proteins, thus affecting the incorporation and photophysical properties of xanthophyll cycle pigments. The study highlighted the importance of zeaxanthin in enhancing excitation quenching to protect the system against photo-damage, while violaxanthin led to minimized dissipation of excitation energy within supramolecular structures.
Article
Nutrition & Dietetics
Sanda Jurja, Ticuta Negreanu-Pirjol, Monica Vasile, Mihaela Mehedinti Hincu, Valeria Coviltir, Bogdan-Stefan Negreanu-Pirjol
Summary: This study aimed to evaluate the effect of xanthophyll pigments dietary supplements in preventing and slowing down retinal degenerative damages. The results showed that these dietary supplements can slow down the progression of visual loss and have a positive impact on overall health.
FRONTIERS IN NUTRITION
(2023)
Article
Plant Sciences
Christos Chondrogiannis, Kassiani Kotsi, George Grammatikopoulos, Yiola Petropoulou
Summary: The study aims to examine the photoprotective potential differences between adult and juvenile Mediterranean plants. Two native Mediterranean plants with distinct growth forms, Cercis siliquastrum L. and Nerium oleander L., were monitored for their individual carotenoids, electron transport rate (ETR), and non-photochemical quenching (NPQ) in mature leaves. Juveniles exhibited lower ETR and increased NPQ values compared to adults, especially during summer drought, indicating enhanced photoprotection potential in juveniles.
Article
Microbiology
James O'Brien, Erin L. McParland, Anna R. Bramucci, Martin Ostrowski, Nachshon Siboni, Timothy Ingleton, Mark V. Brown, Naomi M. Levine, Bonnie Laverock, Katherina Petrou, Justin Seymour
Summary: This study examines the relationship between microbial community dynamics and DMS concentrations in an oceanographic time series conducted on the east Australian coast. The results show that seasonal shifts in microbial community composition affect the net DMSP concentrations, with certain phytoplankton species producing more DMSP than others. Additionally, planktonic bacteria play a significant role in producing DMSP and DMSO in ocean surface waters.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Agricultural Engineering
Claudio Fuentes-Grunewald, Jose Ignacio Gayo-Pelaez, Vanessa Ndovela, Eleanor Wood, Rahul Vijay Kapoore, Carole Anne Llewellyn
Summary: The novel two-phase process successfully validates the concept of implementing a circular economy at an industrial scale using microalgae. Microalgae cultures are able to efficiently uptake and bioremediate nutrients, producing high quality biomass suitable for industrial applications.
BIORESOURCE TECHNOLOGY
(2021)
Article
Microbiology
Bethan Kultschar, Ed Dudley, Steve Wilson, Carole Anne Llewellyn
Summary: UV-A exposure significantly influences metabolite levels in C. fritschii, showing an overall increase within 24 hours. UV-A is more similar to PAR compared to UV-B, indicating the importance of amino acids glutamate, phenylalanine, and leucine in UV stress response. Palmitic and stearic acids exhibit positive log2 fold-change in UV-A and PAR experiments, while showing negative log2 fold-change in UV-B experiments, suggesting the more harmful effect of UV-B on primary metabolism.
Article
Environmental Sciences
Matthew D. Shupe, Markus Rex, Byron Blomquist, P. Ola G. Persson, Julia Schmale, Taneil Uttal, Dietrich Althausen, Helene Angot, Stephen Archer, Ludovic Bariteau, Ivo Beck, John Bilberry, Silvia Bucci, Clifton Buck, Matt Boyer, Zoe Brasseur, Ian M. Brooks, Radiance Calmer, John Cassano, Vagner Castro, David Chu, David Costa, Christopher J. Cox, Jessie Creamean, Susanne Crewell, Sandro Dahlke, Ellen Damm, Gijs de Boer, Holger Deckelmann, Klaus Dethloff, Marina Duetsch, Kerstin Ebell, Andre Ehrlich, Jody Ellis, Ronny Engelmann, Allison A. Fong, Markus M. Frey, Michael R. Gallagher, Laurens Ganzeveld, Rolf Gradinger, Juergen Graeser, Vernon Greenamyer, Hannes Griesche, Steele Griffiths, Jonathan Hamilton, Guenther Heinemann, Detlev Helmig, Andreas Herber, Celine Heuze, Julian Hofer, Todd Houchens, Dean Howard, Jun Inoue, Hans-Werner Jacobi, Ralf Jaiser, Tuija Jokinen, Olivier Jourdan, Gina Jozef, Wessley King, Amelie Kirchgaessner, Marcus Klingebiel, Misha Krassovski, Thomas Krumpen, Astrid Lampert, William Landing, Tiia Laurila, Dale Lawrence, Michael Lonardi, Brice Loose, Christof Luepkes, Maximilian Maahn, Andreas Macke, Wieslaw Maslowski, Christopher Marsay, Marion Maturilli, Mario Mech, Sara Morris, Manuel Moser, Marcel Nicolaus, Paul Ortega, Jackson Osborn, Falk Paetzold, Donald K. Perovich, Tuukka Petaja, Christian Pilz, Roberta Pirazzini, Kevin Posman, Heath Powers, Kerri A. Pratt, Andreas Preusser, Lauriane Quelever, Martin Radenz, Benjamin Rabe, Annette Rinke, Torsten Sachs, Alexander Schulz, Holger Siebert, Tercio Silva, Amy Solomon, Anja Sommerfeld, Gunnar Spreen, Mark Stephens, Andreas Stohl, Gunilla Svensson, Janek Uin, Juarez Viegas, Christiane Voigt, Peter von der Gathen, Birgit Wehner, Jeffrey M. Welker, Manfred Wendisch, Martin Werner, ZhouQing Xie, Fange Yue
Summary: With the Arctic rapidly changing, there is a crucial need to observe, understand, and model these changes. The MOSAiC expedition successfully documented and characterized various aspects of the Arctic atmospheric system through a comprehensive observational program. The observations revealed the significant influence of atmospheric variability and highlighted the higher temperatures and moisture near the sea ice edge during summer. The obtained data will support further research and modeling capabilities in the Arctic.
ELEMENTA-SCIENCE OF THE ANTHROPOCENE
(2022)
Article
Chemistry, Multidisciplinary
Fleuriane Fernandes, Alla Silkina, Jose Ignacio Gayo-Pelaez, Rahul Vijay Kapoore, Denis de la Broise, Carole A. Llewellyn
Summary: This study investigated the influence of pH on the availability of ammonium in microalgal cultures and the effects of different digestates on microalgal growth performance and biomass composition. The results showed that an acidic pH (6-6.5) improved the availability of ammonium and promoted the growth of microalgae. Additionally, digestates from different feedstocks resulted in variations in growth yields and biomass composition.
APPLIED SCIENCES-BASEL
(2022)
Article
Environmental Sciences
Stephen D. Archer, Laura C. Lubelczyk, Moriah Kunes, Kathryn McPhee, Walter Dawydiak, Michael Staiger, Kevin M. Posman, Nicole J. Poulton
Summary: A new saturation approach based on functional response was developed to investigate the predator-prey interactions in planktonic communities. The method used laboratory cultures and surrogate prey to estimate the growth and mortality rates of populations. The results showed that this approach can be used to study coastal and non-coastal waters as well as different size classes of prey.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Nicholas R. Record, Johnathan Evanilla, Kohl Kanwit, Craig Burnell, Carmen Cartisano, Bryant J. Lewis, Jill MacLeod, Benjamin Tupper, David W. Miller, Adrienne T. Tracy, Carol White, Matt Moretti, Ben Hamilton, Cameron Barner, Stephen D. Archer
Summary: This paper discusses the operation of a stakeholder-based PSP forecasting program in the 2021 season and emphasizes the importance of stakeholder input. The forecasts were accurate and well-received by stakeholders, but there are challenges in the system design.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Nuria Benavent, Anoop S. Mahajan, Qinyi Li, Carlos A. Cuevas, Julia Schmale, Helene Angot, Tuija Jokinen, Lauriane L. J. Quelever, Anne-Marlene Blechschmidt, Bianca Zilker, Andreas Richter, Jesus A. Serna, David Garcia-Nieto, Rafael P. Fernandez, Henrik Skov, Adela Dumitrascu, Patric Simoes Pereira, Katarina Abrahamsson, Silvia Bucci, Marina Duetsch, Andreas Stohl, Ivo Beck, Tiia Laurila, Byron Blomquist, Dean Howard, Stephen D. Archer, Ludovic Bariteau, Detlev Helmig, Jacques Hueber, Hans-Werner Jacobi, Kevin Posman, Lubna Dada, Kaspar R. Daellenbach, Alfonso Saiz-Lopez
Summary: The study found that iodine chemistry plays a more important role than bromine chemistry in tropospheric ozone losses in the Arctic. Chemical reactions between iodine and ozone were identified as the second highest contributor to ozone loss over the study period.
Article
Fisheries
Jin-Ho Yun, Stephen D. Archer, Nichole N. Price
REVIEWS IN AQUACULTURE
(2023)
Article
Multidisciplinary Sciences
Helene Angot, Byron Blomquist, Dean Howard, Stephen Archer, Ludovic Bariteau, Ivo Beck, Matthew Boyer, Molly Crotwell, Detlev Helmig, Jacques Hueber, Hans-Werner Jacobi, Tuija Jokinen, Markku Kulmala, Xin Lan, Tiia Laurila, Monica Madronich, Donald Neff, Tuukka Petaja, Kevin Posman, Lauriane Quelever, Matthew D. Shupe, Isaac Vimont, Julia Schmale
Summary: This paper provides an overview of trace gas measurements conducted during the MOSAiC expedition and highlights the high quality of the monitoring activities. Merged datasets are recommended for further use by the scientific community.
Article
Multidisciplinary Sciences
William M. Balch, David T. Drapeau, Nicole Poulton, Stephen D. Archer, Carmen Cartisano, Craig Burnell, Jelena Godrijan
Summary: Some coccolithophores have strategies for acquiring carbon in sub-euphotic environments with insufficient light for photosynthesis. Field experiments in the northwest Atlantic showed that these coccolithophores have slow uptake rates of dissolved organic carbon (DOC), suggesting that osmotrophy plays a role in survival in low-light situations.
Article
Biotechnology & Applied Microbiology
Valeria Candelo, Carole Anne Llewellyn
Summary: Membrane filtration technique can be used to efficiently purify and concentrate aqueous solutions of algal-derived mycosporine-like amino acids (MAAs), while simultaneously separating valuable natural product phycocyanin. The study confirms the potential of membrane filtration for purifying and concentrating MAAs and separating phycocyanin, highlighting a biorefinery approach.
Review
Environmental Sciences
Frances E. E. Hopkins, Stephen D. D. Archer, Thomas G. G. Bell, Parvadha Suntharalingam, Jonathan D. D. Todd
Summary: This Review discusses the production, cycling, and broader radiative effects of dimethylsulfide (DMS) in the ocean and atmosphere. DMS supplies sulfur to the atmosphere, contributing to the production of atmospheric sulfate aerosols that influence cloud radiative properties and climate. Advances in molecular genetics and biogeochemical measurements have revealed the global prevalence of DMS-related processes. Better understanding and modeling of the biogeochemical processes controlling DMS production are crucial for estimating its impact on climate.
NATURE REVIEWS EARTH & ENVIRONMENT
(2023)
Article
Multidisciplinary Sciences
Fange Yue, Helene Angot, Byron Blomquist, Julia Schmale, Clara J. M. Hoppe, Ruibo Lei, Matthew D. Shupe, Liyang Zhan, Jian Ren, Hailong Liu, Ivo Beck, Dean Howard, Tuija Jokinen, Tiia Laurila, Lauriane Quelever, Matthew Boyer, Tuukka Petaja, Stephen Archer, Ludovic Bariteau, Detlev Helmig, Jacques Hueber, Hans-Werner Jacobi, Kevin Posman, Zhouqing Xie
Summary: Based on observations and modeling, it is found that atmospheric mercury in the Arctic is mainly derived from oceanic evasion, particularly in the Marginal Ice Zone (MIZ). This regional process could be the main cause for the summertime peak in mercury concentrations. With rapid Arctic warming and MIZ expansion, oceanic mercury evasion may become more significant.
NATURE COMMUNICATIONS
(2023)
Article
Environmental Sciences
Johannes G. M. Barten, Laurens N. Ganzeveld, Gert-Jan Steeneveld, Byron W. Blomquist, Helene Angot, Stephen D. Archer, Ludovic Bariteau, Ivo Beck, Matthew Boyer, Peter von der Gathen, Detlev Helmig, Dean Howard, Jacques Hueber, Hans-Werner Jacobi, Tuija Jokinen, Tiia Laurila, Kevin M. Posman, Lauriane Quelever, Julia Schmale, Matthew D. Shupe, Maarten C. Krol
Summary: We quantified the impact of O-3 deposition to the Arctic sea ice on the PBL O-3 concentration and budget. The surface resistance on the order of 20,000 s m(-1) was found to be higher than traditionally used values in many atmospheric chemistry and transport models. The SCM accurately represented the yearly cycle but failed to capture observed springtime ozone depletion events.
ELEMENTA-SCIENCE OF THE ANTHROPOCENE
(2023)
Article
Environmental Sciences
Shaddy Ahmed, Jennie L. Thomas, Helene Angot, Aurelien Dommergue, Stephen D. Archer, Ludovic Bariteau, Ivo Beck, Nuria Benavent, Anne-Marlene Blechschmidt, Byron Blomquist, Matthew Boyer, Jesper H. Christensen, Sandro Dahlke, Ashu Dastoor, Detlev Helmig, Dean Howard, Hans-Werner Jacobi, Tuija Jokinen, Remy Lapere, Tiia Laurila, Lauriane L. J. Quelever, Andreas Richter, Andrei Ryjkov, Anoop S. Mahajan, Louis Marelle, Katrine Aspmo Pfaffhuber, Kevin Posman, Annette Rinke, Alfonso Saiz-Lopez, Julia Schmale, Henrik Skov, Alexandra Steffen, Geoff Stupple, Jochen Stutz, Oleg Travnikov, Bianca Zilker
Summary: Near-surface mercury and ozone depletion events occur in the lowest part of the atmosphere during Arctic spring, driven by reactive halogen radicals released from snow, ice, and aerosols. This study added Arctic bromine and chlorine chemistry to a model to simulate the hourly and daily variability of Arctic mercury depletion. The model predicts that bromine chemistry is a major contributor to elemental mercury oxidation and that most oxidized mercury deposited to land-based snow is re-emitted to the atmosphere.
ELEMENTA-SCIENCE OF THE ANTHROPOCENE
(2023)
