Results 1 to 10 of about 1,141 (157)

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

PLoS 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.
Todd R Miller, Katherine D Mcmahon
exaly   +5 more sources

Microcystin Concentrations and Detection of the mcyA Gene in Water Collected from Agricultural, Urban, and Recreational Areas in a Karst Aquifer in the Yucatan Peninsula of Mexico

Microbiology Research, 2023
The eutrophication of freshwater ecosystems allows the proliferation of cyanobacteria that can produce secondary metabolites such as microcystins. The main aim of this study was to explore the occurrence and concentration of microcystin and the mcyA gene
Gerardo Ávila-Torres, Gabriela Rosiles-González, Victor Hugo Carrillo-Jovel, Gilberto Acosta-González, Eduardo Cejudo-Espinosa, Daniela Ortega-Camacho, Cecilia Hernández-Zepeda, Oscar Alberto Moreno Valenzuela   +7 more
doaj   +3 more sources

Identificação do gene mcyA em florações naturais de Radiocystis fernandoi, em um tributário do reservatório de Rosana, Brasil - doi: 10.4025/actascibiolsci.v33i3.6802

Acta Scientiarum: Biological Sciences, 2011
As cianobactérias são conhecidamente produtoras de toxinas. Dentro de uma mesma espécie, podemos encontrar variedades tóxicas e não-tóxicas, impossíveis de diferenciação apenas pela morfologia.
Iraúza Arroteia Fonseca, Thiago Cintra Maniglia, Liliana Rodrigues, Alberto José Prioli, Sônia Maria Alves Pinto Prioli   +4 more
doaj   +5 more sources

PCR amplification and DNA sequence of mcyA gene: The distribution profile of a toxigenic Microcystis aeruginosa in the Hartbeespoort Dam, South Africa [PDF]

Journal of Water and Health, 2013
Using new polymerase chain reaction (PCR) primers, a once known to be under-transcribed microcystin synthetase A (mcyA) gene from the only known toxigenic cyanobacterium Microcystis aeruginosa dominating the Hartbeespoort Dam was consistently amplified from genomic DNA extracted from a set of algal and cell free water samples collected across this dam.
Sammy Boussiba, Victor Wepener, Titus A M Msagati   +2 more
exaly   +5 more sources

First Polyphasic Study of Cheffia Reservoir (Algeria) Cyanobacteria Isolates Reveals Toxic Picocyanobacteria Genotype [PDF]

Microorganisms, 2023
Monitoring water supply requires, among other quality indicators, the identification of the cyanobacteria community and taking into account their potential impact in terms of water quality.
Lamia Benredjem, João Morais, Guilherme Scotta Hentschke, Akila Abdi, Hajira Berredjem, Vitor Vasconcelos   +5 more
doaj   +3 more sources

New Report of Cyanobacteria and Cyanotoxins in El Pañe Reservoir: A Threat for Water Quality in High-Andean Sources from PERU [PDF]

Toxins
Cyanobacteria are cosmopolitan organisms; nonetheless, climate change and eutrophication are increasing the occurrence of cyanobacteria blooms (cyanoblooms), thereby raising the risk of cyanotoxins in water sources used for drinking, agriculture, and ...
Victor Hugo Rodriguez Uro, Joana Azevedo, Mário Jorge Araújo, Raquel Silva, Jürgen Bedoya, Betty Paredes, Cesar Ranilla, Vitor Vasconcelos, Alexandre Campos   +8 more
doaj   +3 more sources

Effective Early Treatment of Microcystis Exponential Growth and Microcystin Production with Hydrogen Peroxide and Hydroxyapatite [PDF]

Toxins, 2022
Mitigating cyanotoxin production is essential to protecting aquatic ecosystems and public health. However, current harmful cyanobacterial bloom (HCB) control strategies have significant shortcomings.
Ian Struewing, Nathan Sienkiewicz, Chiqian Zhang, Nicholas Dugan, Jingrang Lu   +4 more
doaj   +2 more sources

Identificação do gene mcyA em florações naturais de Radiocystis fernandoi, em um tributário do reservatório de Rosana, Brasil = Identification of the mcyA gene in natural blooms of Radiocystis fernandoi from a tributary of the Rosana reservoir, Brazil

Acta Scientiarum: Biological Sciences, 2011
As cianobactérias são conhecidamente produtoras de toxinas. Dentro de uma mesma espécie, podemos encontrar variedades tóxicas e não-tóxicas, impossíveis de diferenciação apenas pela morfologia.
Iraúza Arroteia Fonseca, Thiago Cintra Maniglia, Liliana Rodrigues, Alberto José Prioli, Sônia Maria Alves Pinto Prioli   +4 more
doaj   +4 more sources

Detection of a Planktothrix agardhii Bloom in Portuguese Marine Coastal Waters [PDF]

Toxins, 2017
Cyanobacteria blooms are frequent in freshwaters and are responsible for water quality deterioration and human intoxication. Although, not a new phenomenon, concern exists on the increasing persistence, scale, and toxicity of these blooms.
Catarina Churro, Joana Azevedo, Vitor Vasconcelos, Alexandra Silva   +3 more
doaj   +5 more sources

Recruitment of cyanobacteria by reverse transcription quantitative real-time PCR based on expression of Microcystis gene [PDF]

PeerJ, 2019
In this study, a SYBR Green quantitative real-time PCR method was established and applied. Relative expression of the synthetic genes from Microcystis gas vesicles (gvpC), algal toxin genes (mcyA), and polysaccharides (espL) from water and sediments of ...
Long Yu, Xiaofei Wu, Yang Yu, Limei Shi, Min Zhang   +4 more
doaj   +3 more sources