Results 1 to 10 of about 879 (125)

Phytoplankton growth and potential cyanotoxin production differ in response to nitrogen and phosphorus amendments in late summer communities from Kabetogama Lake (Minnesota, United States). [PDF]

J Phycol
Abstract Cyanotoxins such as microcystin (MC), cylindrospermopsin, and saxitoxin are secondary metabolites that are rich in nitrogen (N). Most cyanobacteria grow best on reduced inorganic N (ammonium, NH4), but when NH4 is absent, cyanobacteria can activate physiological pathways to process other N forms (e.g., nitrate; NO3).
Larson JH, Maki RP, Bailey SW, Christensen VG, Loftin KA, Stelzer EA, Smith JC, McWhorter SA.   +7 more
europepmc   +2 more sources

Dominance and toxicity without lethality: Exploring biomass, cyanometabolites, and Daphnia responses across Cyanobacterial strains. [PDF]

J Phycol
Abstract Cyanobacteria are cosmopolitan, important components of biomass with a remarkable ability to synthesize a diverse array of bioactive compounds, some of which may have toxic effects on other organisms and ecosystems. In this study, filamentous cyanobacterial strains isolated predominantly from temperate European freshwaters (Aphanizomenon ...
Wejnerowski Ł, Dulić T, Akter S, Rybak M, Piasecka A, Szymkowiak J, Kamiński O, Czerepska A, Pniewski F, Svirčev Z, Poniecka E, Zawierucha K, Taylor K, Dziuba MK, Meriluoto J.   +14 more
europepmc   +2 more sources

Occurrence and Diversity of Cyanotoxins and Retinoid Compounds in Antarctic Microbial Mats: Evidence From James Ross Island. [PDF]

Environ Microbiol Rep
Occurrence and distribution of cyanotoxins and retinoids across different Antarctic ecosystems at James Ross Island. These ecosystems harbour diverse microbial communities dominated by autotrophic cyanobacteria and algae, which can produce hazardous compounds for animals.
Sehnal L, Bláhová L, Smutná M, Mikeš O, Babica P, Hilscherová K.   +5 more
europepmc   +2 more sources

Limnofasciculus delicatus (Coleofasciculaceae, Coleofasciculales), a Novel Mat-Forming Cyanobacterium From Shenandoah River, Virginia, USA. [PDF]

Environ Microbiol Rep
A novel mat‐forming benthic freshwater cyanobacterium, Limnofasciculus delicatus, is described based on morphological, phylogenetic and genomic evidence from the North and South Forks of the Shenandoah River. Although Limnofasciculus delicatus lacks biosynthetic gene clusters associated with the production of known cyanotoxins, it occurs in association
Stancheva R, Valadez-Cano C, Van Aken B, Selckmann GM, Lawrence J, Cahoon AB.   +5 more
europepmc   +2 more sources

Algal Blooms in Lakes Increase After Wildfire Smoke Events in the Contiguous United States. [PDF]

Glob Chang Biol Commun
Temporary pulses of surface chlorophyll‐a are identified following wildfire smoke events in lakes and reservoirs across the United States. ABSTRACT Area burned by wildfire has increased in the contiguous United States and in many places globally in recent years, impacting communities and ecosystems nearby and even far downwind of fires. We examined the
Olson NE, Brehob MM, Sabo RD, Pavlovic I, Shank KI, Penry S, Handler AM, Pennino MJ, Rice RB, Boaggio KL, LeDuc SD.   +10 more
europepmc   +2 more sources

Nutrient-driven regulation of saxitoxin gene expression and toxin production in Raphidiopsis raciborskii (Cyanobacteria). [PDF]

J Phycol
Abstract Raphidiopsis raciborskii is a diazotrophic cyanobacterium, globally distributed in aquatic environments and known for forming toxic blooms, thereby affecting ecosystem services. South American strains are producers of saxitoxins, potent neurotoxins harmful to humans and animals.
Zare M, Barçante B, Pimentel JDSM, Giani A.   +3 more
europepmc   +2 more sources

Biosensors for Biotoxins Detection and Monitoring

Advanced Sensor Research, Volume 5, Issue 6, June 2026.
This review examines state‐of‐the‐art biosensing platforms for biotoxin detection, including antibody‐, aptamer‐, CRISPR‐, nanopore‐, whole cells‐ and MIP‐based sensors. It highlights advances in ultra‐sensitive detection, real‐matrix validation in food and water, and multiplexed analysis, and discusses how the integration with machine learning ...
Alissa Agerova, Juan Francisco Bada Juarez, Matteo Dal Peraro   +2 more
wiley   +1 more source

Multi‐Omic Assessment of Microbial Communities and Their Polyketide Biosynthetic Potential Across Abyssal Sediments

Environmental Microbiology, Volume 28, Issue 5, May 2026.
Abyssal sediments were assessed for taxonomic diversity and polyketide biosynthetic potential and compared to metagenomic and metabolomic assessments of the same sediments. Biodiversity differences were documented across biogeochemical regimes with the results providing baseline awareness of what might be lost should deep‐sea microbiomes be disrupted ...
Hans W. Singh, Johanna Gutleben, Alexander Bogdanov, Alexander B. Chase, Alyssa Demko, Sheila Podell, Brian Haley, Paul R. Jensen   +7 more
wiley   +1 more source

Multimodal Cross‐Attentive Graph‐Based Framework for Predicting In Vivo Endocrine Disruptors

Advanced Science, Volume 13, Issue 21, 13 April 2026.
A multimodal cross‐attentive graph neural network integrates molecular graphs with androgen and estrogen adverse outcome pathway (AOP)–anchored in vitro assay signals to predict in vivo endocrine disruption. By fusing information on Tier‐1 AOP logits with chemical structures, the framework achieves high accuracy and provides assay‐traceable ...
Eder Soares de Almeida Santos, Gustavo Felizardo Santos Sandes, Artur Christian Garcia da Silva, Holli‐Joi Martin, Eugene N. Muratov, Rodolpho de Campos Braga, Bruno Junior Neves   +6 more
wiley   +1 more source

Statewide Intensification of Harmful Algal Blooms Across California Lakes and Reservoirs

GeoHealth, Volume 10, Issue 4, April 2026.
Abstract Monitoring cyanobacteria is crucial for assessing water quality, safeguarding public health, and understanding ecosystem dynamics impacted by harmful algal blooms. This study explores the potential of satellite remote sensing (SRS) to assess risks of cyanotoxin exposure in California's recreational waters from 2002 to 2011 and 2016 to 2023 ...
Brittany N. Barreto Martinez, Erin L. Hestir, Marc W. Beutel, Christine M. Lee   +3 more
wiley   +1 more source