Results 11 to 20 of about 37,879 (320)

Episodic Decrease in Temperature Increases mcy Gene Transcription and Cellular Microcystin in Continuous Cultures of Microcystis aeruginosa PCC 7806

open access: yesFrontiers in Microbiology, 2020
Microcystins produced during harmful cyanobacterial blooms are a public health concern. Although patterns are emerging, the environmental cues that stimulate production of microcystin remain confusing, hindering our ability to predict fluctuations in ...
Robbie M. Martin   +9 more
doaj   +2 more sources

Presence or Absence of mlr Genes and Nutrient Concentrations Co-Determine the Microcystin Biodegradation Efficiency of a Natural Bacterial Community

open access: yesToxins, 2016
The microcystin biodegradation potential of a natural bacterial community coexisting with a toxic cyanobacterial bloom was investigated in a water reservoir from central Spain. The biodegradation capacity was confirmed in all samples during the bloom and
María Ángeles Lezcano   +6 more
doaj   +2 more sources

Microcystin mcyA and mcyE Gene Abundances Are Not Appropriate Indicators of Microcystin Concentrations in Lakes. [PDF]

open access: yesPLoS ONE, 2015
Cyanobacterial harmful algal blooms (cyanoHABs) are a primary source of water quality degradation in eutrophic lakes. The occurrence of cyanoHABs is ubiquitous and expected to increase with current climate and land use change scenarios.
Lucas J Beversdorf   +3 more
doaj   +4 more sources

Associations between chlorophyll a and various microcystin health advisory concentrations [version 2; referees: 1 approved, 2 approved with reservations]

open access: yesF1000Research, 2016
Cyanobacteria harmful algal blooms (cHABs) are associated with a wide range of adverse health effects that stem mostly from the presence of cyanotoxins.
Jeffrey W. Hollister, Betty J. Kreakie
doaj   +2 more sources

Nitrogen Substrate Impacts Microcystis aeruginosa Exometabolome Composition. [PDF]

open access: yesEnviron Microbiol Rep
We used untargeted metabolomics to identify differences in the compounds exuded into culture media by three strains of M. aeruginosa grown on three N substrate treatments (NO3−, NH4+, and urea). Results showed that the usage of different N substrates changes the exometabolome of toxic and non‐toxic strains of M. aeruginosa.
Peck CM   +3 more
europepmc   +2 more sources

Spatio-Temporal Resolution of Microbial Functions and Taxa Associated With Cyanobacterial Harmful Algae Blooms Along a 500-Km Aquatic Continuum in the Lake Erie Watershed. [PDF]

open access: yesEnviron Microbiol
The aquatic microbiome can influence cyanobacterial harmful algal blooms. Abundances of genes and transcripts for phosphorus acquisition, denitrification and nitrogen fixation were higher upstream, whereas in Lake Erie genes and transcripts for microcystin production were higher.
Crevecoeur S   +9 more
europepmc   +2 more sources

A Review of Nephrotoxicity of Microcystins [PDF]

open access: yesToxins, 2020
Cyanobacterial blooms triggered by eutrophication and climate change have become a global public health issue. The toxic metabolites microcystins (MCs) generated by cyanobacteria can accumulate in food chain and contaminate water, thus posing a potential threat to human and animals health.
Shuaishuai Xu   +6 more
openaire   +4 more sources

Geographic redistribution of microcystin hotspots in response to climate warming

open access: yesNature Water, 2023
High concentrations of cyanobacterial toxins such as microcystin represent a global challenge to water quality in lakes, threatening health, economies and ecosystem stability.
Julian Merder   +5 more
semanticscholar   +1 more source

Microcystin Contamination and Toxicity: Implications for Agriculture and Public Health

open access: yesToxins, 2022
Microcystins are natural hepatotoxic metabolites secreted by cyanobacteria in aquatic ecosystems. When present at elevated concentrations, microcystins can affect water quality aesthetics; contaminate drinking water reservoirs and recreational waters ...
R. Melaram   +2 more
semanticscholar   +1 more source

Quantification of microcystin production and biodegradation rates in the western basin of Lake Erie

open access: yesLimnology and Oceanography, 2022
Cyanobacterial biomass forecasts currently cannot predict the concentrations of microcystin, one of the most ubiquitous cyanotoxins that threaten human and wildlife health globally.
J. Chaffin   +10 more
semanticscholar   +1 more source

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