Article
Food Science & Technology
Jordan A. Facey, Jake P. Violi, Josh J. King, Chowdhury Sarowar, Simon C. Apte, Simon M. Mitrovic
Summary: Microcystis aeruginosa, a widespread cyanobacteria, exhibits growth limitation when iron, cobalt, and manganese are excluded from the growth media. Intracellular iron concentrations are notably higher in treatments grown in cobalt-deplete media compared to other treatments.
Article
Marine & Freshwater Biology
Jacob A. Cianci-Gaskill, Katrina K. Knott, Rebecca O'Hearn, Alba Argerich, Darby Niswonger, Jeff Wenzel, Joanna B. Whittier, Rebecca L. North
Summary: This study investigates the accumulation of microcystin in bluegill and largemouth bass from an agricultural reservoir in the North American Great Plains. The results show that bluegill has significantly higher microcystin levels than largemouth bass. Harvest date and water microcystin concentrations are identified as important factors influencing the accumulation of microcystin in fish tissues.
AQUATIC TOXICOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Carolina Acuna-Alonso, Xana Alvarez, Olalla Lorenzo, Angeles Cancela, Enrique Valero, Angel Sanchez
Summary: Blooms of microalgae and cyanobacteria are increasing annually, posing significant environmental concerns. Harvesting these microalgae is crucial for water governance without releasing toxins. Among the three methods studied, electroflocculation showed the highest efficiency. However, post-harvesting toxicity levels may be affected by chlorophyll interference, requiring further research.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Environmental Sciences
Di Wu, Ting Wang, Jing Wang, Lijuan Jiang, Ying Yin, Hongyan Guo
Summary: The study reveals that 1 μm polystyrene microplastics have a greater impact on freshwater cyanobacteria compared to 100 nm microplastics, promoting algal growth and inhibiting photosynthesis. Additionally, 1 μm microplastics increase intracellular microcystins content and inhibit their release, while 100 nm microplastics only promote microcystin production.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Microbiology
Zoran Marinovic, Nada Tokodi, Damjana Drobac Backovic, Ilija Scekic, Nevena Kitanovic, Snezana B. Simic, Nevena B. Dordevic, Arpad Ferincz, Adam Staszny, Tamara Dulic, Jussi Meriluoto, Bela Urbanyi, Jelena Lujic, Zorica Svircev
Summary: Lake Balaton, the largest shallow lake in Central Europe, is affected by the Zala River. The Kis-Balaton Water Protection System (KBWPS) was constructed to improve water quality, but toxic cyanobacterial blooms were still observed. The KBWPS acts as a significant buffering zone, protecting the water quality of Lake Balaton. Regular monitoring of cyanobacteria and cyanotoxins in this ecosystem is crucial.
Article
Environmental Sciences
Wenjing Wang, Yanqing Sheng, Ming Jiang
Summary: The study observed a decrease in the relative abundance of Microcystis with increasing salinity in a coastal river environment. Salinity was found to influence the growth, metabolism, and toxin production of Microcystis, potentially increasing the risk of microcystin exposure in coastal rivers during cyanobacterial blooms.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Ecology
Alexander Hegg, Reinder Radersma, Tobias Uller
Summary: This study investigated the seasonal changes and the effects of microcystin-producing cyanobacteria on the reproduction and survival of Daphnia longispina individuals in five eutrophic lakes in southern Sweden. The results showed that the concentration of microcystin was higher during summer and autumn, and individuals collected during these periods or from lakes with high microcystin concentration had a stronger decline in reproductive output. The populations were unable to adapt quickly enough to recover from the negative effects of microcystin, indicating limited effects of seasonal tolerance on the eco-evolutionary dynamics between Daphnia and phytoplankton.
FRESHWATER BIOLOGY
(2022)
Article
Marine & Freshwater Biology
Ramsy Agha, Melanie Gerphagnon, Charlotte Schampera, Thomas Rohrlack, Jutta Fastner, Justyna Wolinska
Summary: Chytrid parasites are recognized as effective control agents of cyanobacteria, but their infection does not lead to a significant increase in toxin production. This suggests that chytrid epidemics do not result in massive toxin release.
Article
Microbiology
Souvik Roy, Arthur Guljamow, Elke Dittmann
Summary: Cyanobacterial blooms, which produce hepatotoxin microcystin, pose a serious threat to water quality and human health. This study explores how different temperatures affect the growth and secondary metabolite production in the cyanobacterium Microcystis aeruginosa. It is found that temperature fluctuations impact the production and localization of microcystin in the cells. Additionally, the wild-type strain of Microcystis shows better adaptation at higher temperatures, while the microcystin-deficient mutant performs better at lower temperatures.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Environmental Sciences
Rene S. Shahmohamadloo, Xavier Ortiz Almirall, Denina B. D. Simmons, David G. Poirier, Satyendra P. Bhavsar, Paul K. Sibley
Summary: The study reveals that fish respond differently to cyanobacterial toxicity within and among species, possibly due to their distinct proteomic profiles. Rainbow Trout and Lake Trout show variations in the uptake and depuration of microcystins, providing new insights into our understanding of this field.
Article
Environmental Sciences
Indira Menezes, Declan Maxwell-McQueeney, Jose Capelo-Neto, Carlos J. Pestana, Christine Edwards, Linda A. Lawton
Summary: Cyanobacterial blooms pose a danger to human and animal health due to cyanotoxins, and traditional water treatment methods struggle to remove cyanobacterial cells efficiently. Hydrogen peroxide has been shown to suppress cyanobacterial growth effectively, with photosynthetic activity proving to be the most suitable method for rapid oxidative cell stress detection in cyanobacteria. Combined methods are recommended for efficient water treatment management.
Article
Environmental Sciences
Paul W. MacKeigan, Arthur Zastepa, Zofia E. Taranu, Judy A. Westrick, Anqi Liang, Frances R. Pick, Beatrix E. Beisner, Irene Gregory-Eaves
Summary: Understanding the factors that contribute to the occurrence of cyanobacterial toxins in lakes is crucial for their effective management. This study examined the presence and concentrations of microcystins in Canadian lakes using environmental predictors and cyanobacteria community data. The results showed that microcystins were detected in 30% of lakes, with higher concentrations in eutrophic lakes in central Canada. The presence and concentrations of specific microcystin congeners varied according to environmental factors and cyanobacteria biomass.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Review
Environmental Sciences
Jingjie Ma, Peifang Wang
Summary: Increasing atmospheric CO2 concentration can negatively impact aquatic ecosystems and exacerbate the development of undesirable cyanobacterial blooms in freshwater ecosystems.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Di Wu, Juanjuan Zhang, Wenchao Du, Ying Yin, Hongyan Guo
Summary: The present study found that high concentrations of cerium oxide nanoparticles (CeO2 NPs) had adverse effects on Microcystis aeruginosa, inhibiting algal growth, suppressing photosynthesis, and inducing the generation of reactive oxygen species (ROS). Additionally, the high concentration of CeO2 NPs significantly induced the production of intracellular microcystins (MCs), posing a potential threat to freshwater ecosystems.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Gabriela Rocio Sosa Benegas, Suzan Prado Fernandes Bernal, Valeria Maia de Oliveira, Michel Rodrigo Zambrano Passarini
Summary: The study revealed the potential of Antarctic bacteria to inhibit the proliferation of Microcystis aeruginosa and degrade microcystin-LR, suggesting their possible application in mitigating cyanobacterial blooms in the future as an alternative or supporting approach.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Biotechnology & Applied Microbiology
Timothy G. Otten, Jennifer L. Graham, Theodore D. Harris, Theo W. Dreher
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2016)
Review
Marine & Freshwater Biology
Richard P. Stumpf, Timothy W. Davis, Timothy T. Wynne, Jennifer L. Graham, Keith A. Loftin, Thomas H. Johengen, Duane Gossiaux, Danna Palladino, Ashley Burtner
Article
Limnology
John R. Jones, Daniel V. Obrecht, Jennifer L. Graham, Michelle B. Balmer, Christopher T. Filstrup, John A. Downing
Article
Engineering, Environmental
Rebecca N. Bushon, Amie M. G. Brady, Eric D. Christensen, Erin A. Stelzer
WATER ENVIRONMENT RESEARCH
(2017)
Article
Limnology
Jennifer L. Graham, Neil M. Dubrovsky, Guy M. Foster, Lindsey R. King, Keith A. Loftin, Barry H. Rosen, Erin A. Stelzer
Article
Environmental Sciences
Donna S. Francy, Amie M. G. Brady, Erin A. Stelzer, Jessica R. Cicale, Courtney Hackney, Harrison D. Dalby, Pamela Struffolino, Daryl F. Dwyer
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2020)
Review
Biochemical Research Methods
Donna S. Francy, Amie M. G. Brady, Jessica R. Cicale, Harrison D. Dalby, Erin A. Stelzer
JOURNAL OF MICROBIOLOGICAL METHODS
(2020)
Article
Biodiversity Conservation
Karan Kakouei, Benjamin M. Kraemer, Orlane Anneville, Laurence Carvalho, Heidrun Feuchtmayr, Jennifer L. Graham, Scott Higgins, Francesco Pomati, Lars G. Rudstam, Jason D. Stockwell, Stephen J. Thackeray, Michael J. Vanni, Rita Adrian
Summary: Land use and climate change are expected to impact phytoplankton in lakes globally, but the effects vary significantly depending on the region and lake sensitivity. Urbanization is identified as a major driver of phytoplankton development in urban lakes, while climate plays a major role in lakes located in remote areas.
GLOBAL CHANGE BIOLOGY
(2021)
Article
Biochemical Research Methods
Rebecca N. Bushon, Amie M. G. Brady, Christopher M. Kephart, Vicente Gallardo
Summary: The study compared a modified RV-PCR method to a membrane-filtration culture method for detecting viable Bacillus spores in water samples. Results showed that there was 96% overall agreement between the two methods when spore concentrations were greater than 10 per sample volume analyzed. The modified RV-PCR method demonstrated shorter processing time and faster results compared to the previously published method.
JOURNAL OF MICROBIOLOGICAL METHODS
(2021)
Article
Limnology
Ruchi Bhattacharya, John R. Jones, Jennifer L. Graham, Daniel Obrecht, Anthony P. Thorpe, James D. Harlan, Rebecca L. North
Summary: The quantity and composition of dissolved organic matter (DOM) and particulate organic matter (POM) in reservoirs exhibit decadal patterns, with shifts in composition attributed to hydroclimatic conditions. Watershed characteristics and limnological parameters have varying degrees of influence on OM dynamics, depending on the season. Future predictions of drier conditions may negatively affect reservoir water quality.
LIMNOLOGY AND OCEANOGRAPHY
(2022)
Article
Engineering, Environmental
Chiqian Zhang, Kyle D. McIntosh, Nathan Sienkiewicz, Erin A. Stelzer, Jennifer L. Graham, Jingrang Lu
Summary: Phytoplankton is crucial in freshwater ecosystems, but excessive growth can be detrimental. Microscopy is the standard method for assessment but is time-consuming and requires expertise in morphology. qPCR offers an alternative with high throughput and accuracy. This study compared qPCR and microscopy for phytoplankton assessment, finding a positive correlation between the two methods and suggesting qPCR as a useful tool.
Article
Multidisciplinary Sciences
David M. Linz, Nathan Sienkiewicz, Ian Struewing, Erin A. Stelzer, Jennifer L. Graham, Jingrang Lu
Summary: This study used a metagenomics-based approach to investigate the microbial communities and cyanobacteria in 12 major rivers in the United States. It was found that the rivers have taxonomically rich microbial communities, including significant amounts of cyanobacteria. Among the potential cyanotoxin producing cyanobacteria, Microcystis was identified as the predominant genus. These findings provide valuable insights into the presence of cyanobacteria and potential toxins in large rivers and their impact on lotic freshwater ecosystems.
SCIENTIFIC REPORTS
(2023)