Results 21 to 30 of about 1,141 (157)

Isolation of a Novel Streptomyces sp. TH05 with Potent Cyanocidal Effects on Microcystis aeruginosa [PDF]

Toxins
In this paper, cultivable actinobacteria were isolated, cultured, and identified from the heavily algal-bloomed waters of Taihu Lake using 16S rRNA gene sequencing.
Xuhan Wang, Siqi Zhu, Shenchen Tao, Shaoyong Zhang, Ruijun Wang, Liqin Zhang   +5 more
doaj   +2 more sources

Distribution and Habitat Specificity of Potentially-Toxic Microcystis across Climate, Land, and Water Use Gradients

Frontiers in Microbiology, 2016
Toxic cyanobacterial blooms are a growing threat to freshwater bodies worldwide. In order for a toxic bloom to occur, a population of cells with the genetic capacity to produce toxins must be present together with the appropriate environmental conditions.
Dikla Aharonovich, Lior Blank
exaly   +3 more sources

Genetic Diversity of Microcystin Producers (Cyanobacteria) and Microcystin Congeners in Aquatic Resources across Africa: A Review Paper. [PDF]

Toxics, 2022
Microcystins are produced by multifaceted organisms called cyanobacteria, which are integral to Africa’s freshwater environments. The excessive proliferation of cyanobacteria caused by rising temperature and eutrophication leads to the production and ...
Chia MA, Ameh I, George KC, Balogun EO, Akinyemi SA, Lorenzi AS.   +5 more
europepmc   +4 more sources

Predicting blooms of toxic cyanobacteria in eutrophic lakes with diverse cyanobacterial communities [PDF]

Scientific Reports, 2017
We investigated possibility of predicting whether blooms, if they occur, would be formed of microcystin-producing cyanobacteria. DGGE analysis of 16S-ITS and mcyA genes revealed that only Planktothrix and Microcystis possessed mcy-genes and Planktothrix ...
Aleksandra Bukowska, Tomasz Kaliński, Michał Koper, Iwona Kostrzewska-Szlakowska, Jan Kwiatowski, Hanna Mazur-Marzec, Iwona Jasser   +6 more
doaj   +2 more sources

Microcystis aeruginosa and microcystin detection by Polymerase Chain Reaction [PDF]

Revista Bio Ciencias
Cyanobacteria are photosynthetic organisms important in multiple biosphere life cycles; however, genera such as Microcystis have the ability to form blooms and produce cyanotoxins that compromise water quality This study aimed to validate the use of ...
Alonso Rodríguez, Rosalba, Chávez Luzanía, Roel Alejandro, De los Santos Villalobos, Sergio, Hernando, Marcelo Pablo, Olea Félix, Jennifer   +4 more
core   +2 more sources

Year-Round Presence of Microcystins and Toxin-Producing Microcystis in the Water Column and Ice Cover of a Eutrophic Lake Located in the Continuous Permafrost Zone (Yakutia, Russia). [PDF]

Toxins (Basel), 2023
This study aimed to test the hypothesis of the year-round presence of toxigenic Microcystis and cyanotoxins in the water and ice of the shallow eutrophic Lake Ytyk-Kyuyol located in the continuous permafrost zone.
Gabyshev VA, Sidelev SI, Chernova EN, Vilnet AA, Davydov DA, Barinova S, Gabysheva OI, Zhakovskaya ZA, Voronov IV.   +8 more
europepmc   +2 more sources

Between church and state: The Catholic Youth Association of Mexico in the struggle for Christian social order

Латиноамериканский исторический альманах, 2022
This article focuses on the history of the Mexican Catholic Youth Association (MCYA), one of a few Catholic organiza-tions that emerged in Mexico in the early twentieth century.
Irina Veselova
doaj   +1 more source

Long‐term exposure to elevated temperature leads to altered gene expression in a common bloom‐forming cyanobacterium

Limnology and Oceanography, Volume 68, Issue 12, Page 2654-2667, December 2023., 2023
Abstract Cyanobacteria have a strong potential to compete well under elevated temperatures. Understanding how they acclimate and evolve under climatic stressors can help us accurately predict their response to forecasted future conditions. However, it is unclear whether increased temperature results in microevolution and/or changes in gene expression ...
Charlotte L. Briddon, Mihai Miclăuş, Adriana Hegedüs, Maria Nicoară, Maria‐Cecilia Chiriac, Bogdan Drugă   +5 more
wiley   +1 more source

Reconstitution and expression of mcy gene cluster in the model cyanobacterium Synechococcus 7942 reveals a role of MC‐LR in cell division

New Phytologist, Volume 238, Issue 3, Page 1101-1114, May 2023., 2023
Summary Cyanobacterial blooms pose a serious threat to public health due to the presence of cyanotoxins. Microcystin‐LR (MC‐LR) produced by Microcystis aeruginosa is the most common cyanotoxins. Due to the limitation of isolation, purification, and genetic manipulation techniques, it is difficult to study and verify in situ the biosynthetic pathways ...
Yanli Zheng, Chunling Xue, Hui Chen, Anqi Jia, Liang Zhao, Junli Zhang, Lixin Zhang, Qiang Wang   +7 more
wiley   +1 more source

Occurrence of Harmful Algal Blooms in Freshwater Sources of Mindu and Nyumba ya Mungu Dams, Tanzania

Journal of Toxicology, Volume 2023, Issue 1, 2023., 2023
Harmful algal blooms (HABs) pose a significant threat to aquatic ecosystems and human health due to the production of toxins. The identification and quantification of these toxins are crucial for water quality management decisions. This study used DNA analysis (PCR techniques) to identify toxin‐producing strains and liquid‐chromatography‐tandem mass ...
Josephine J. Gobry, Hilda S. Bachwenkizi, Offoro N. Kimambo, Faustin N. Ngassapa, Kessy F. Kilulya, Victor Wepener   +5 more
wiley   +1 more source