Article
Microbiology
Zakaria Tazart, Maura Manganelli, Simona Scardala, Franca Maria Buratti, Federica Nigro Di Gregorio, Mountasser Douma, Khadija Mouhri, Emanuela Testai, Mohammed Loudiki
Summary: A study showed that a Moroccan macrophyte extract has a significant control effect on cyanobacterial blooms, reducing density and toxin production without negative effects on associated bacteria. It is important to further assess species-specific responses of cyanobacteria to verify the efficacy and safety of such extracts for human health and the environment.
Article
Engineering, Environmental
Yunhan Jiang, Ying Liu, Jian Zhang
Summary: Mixed antibiotics can stimulate the growth and microcystin synthesis of Microcystis aeruginosa by activating photosynthesis, carbon metabolism, and other pathways to enhance resistance to oxidative stress. This study provides insights into the mechanisms underlying the hormetic stimulation of harmful cyanobacterial blooms by antibiotic contaminants.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Maya Stoyneva-Gartner, Katerina Stefanova, Jean-Pierre Descy, Blagoy Uzunov, Mariana Radkova, Vera Pavlova, Mariya Mitreva, Georg Gartner
Summary: This study provides new data on the spread of toxic strains of Microcystis aeruginosa and M. wesenbergii in Bulgaria, highlighting their contribution to the total species composition and phytoplankton abundance. The identification of potential MC-producers through LM and PCR techniques revealed the presence of Microcystis aeruginosa and M. wesenbergii in shallow waterbodies, even when filamentous cyanoprokaryotes dominated.
APPLIED SCIENCES-BASEL
(2021)
Review
Toxicology
Zorica Svircev, Liang Chen, Kinga Santha, Damjana Drobac Backovic, Stamenko Susak, Aleksandra Vulin, Tamara Palanacki Malesevic, Geoffrey A. Codd, Jussi Meriluoto
Summary: The toxicity of cyanotoxins on the cardiovascular system has been extensively studied. While there is potential for negative effects, the risk to cardiovascular health under normal environmental conditions is considered low.
ARCHIVES OF TOXICOLOGY
(2022)
Article
Engineering, Environmental
Carlos J. Pestana, Diana S. Moura, Jose Capelo-Neto, Christine Edwards, Domenic Dreisbach, Bernhard Spengler, Linda A. Lawton
Summary: The study demonstrates the potential of microplastics to act as carriers for microcystins, achieving toxin concentration 28 times higher on plastic than in water. The experimental results show that adsorption of microcystins onto microplastics is a multifactorial process, dependent on various factors. The study also stresses the limitations of exclusively investigating microcystin-LR.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Review
Engineering, Environmental
Jason Dexter, Alistair J. McCormick, Pengcheng Fu, Dariusz Dziga
Summary: Microcystinase (MlrA) is the most efficient and specific enzymatic process in microcystin detoxification, providing valuable genetic and biochemical information for technological development. There is a growing interest in sustainable, biologically inspired alternatives, with MlrA showing potential in biotechnological applications.
Review
Environmental Sciences
Shulian Wang, Yiying Jiao, Zhi Rao
Summary: This paper reviews recent advancements in research on the selective oxidation and adsorption of cyanotoxins in water bodies, discussing the potential and challenges of selective removal methods in addressing cyanotoxins, while also examining the prospects of cyanotoxin control and in situ selective elimination approaches. It is aimed to provide useful reference and direction for future pilot-scale applications.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Halima Abdullahi, Yahuza Tanimu, Suwebat Ayanronke Akinyemi, Maria Do Carmo Bittencourt-Oliveira, Mathias Ahii Chia
Summary: This study investigated the presence of microcystins in an irrigation water source and found low levels of toxins in the water but higher levels in irrigated vegetables. These results highlight a severe public health problem in Nigeria.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Rong Zhu, Huan Wang, Hong Shen, Xuwei Deng, Jun Chen
Summary: Extracellular MC concentrations lag behind intracellular MCs in Lake Erhai; intracellular MCs are positively influenced by MC-producing cyanobacterial biomass, water temperature, pH, and conductivity; extracellular MCs show little correlation with cyanobacterial abundances and intracellular MC concentrations, but significant negative correlations with water temperature, pH, and conductivity.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Biochemistry & Molecular Biology
Sercan Pravadali-Cekic, Aleksandar Vojvodic, Jake P. Violi, Simon M. Mitrovic, Kenneth J. Rodgers, David P. Bishop
Summary: This study presents a newly developed and validated method for the detection and quantification of BMAA, its isomers, and major MCs using RP LC-MS/MS. The application of this method on a culture of Microcystis aeruginosa resulted in the simultaneous detection of 2,4-DAB and MC-YR. The study provides a unified method for the quantitative analysis of these cyanotoxins in natural environmental samples.
Article
Agronomy
Zakaria Mohamed, Asmaa Bakr, Alexandre Campos, Vitor Vasconcelos, Shereen Abdel-Mohsen Nasr
Summary: This study investigated the effects of irrigation water containing the toxic cyanobacterium Chroococcus minutus on the growth, physiological parameters, and microcystin accumulation in Phaseolus vulgaris plants. The results showed that treated plants exhibited reduced growth and physiological parameters, with microcystin concentrations exceeding the daily intake guidelines for human consumption.
AGRICULTURAL WATER MANAGEMENT
(2022)
Article
Microbiology
Elena A. Tsavkelova, Irina D. Glukhareva, Elena A. Volynchikova, Maria A. Egorova, Maria R. Leontieva, Dina Malakhova, Galina L. Kolomeitseva, Alexander Netrusov
Summary: This study investigates the diversity of cyanobacteria in the roots of leafless orchids, revealing different bacterial community compositions and studying their variations under different nitrogen supply conditions. The results show that phototrophic and diazotrophic cyanobacteria play a significant role in the epiphytic lifestyle of leafless orchids.
Article
Environmental Sciences
Dan He, Jiuwen Zheng, Lijuan Ren, Qinglong L. Wu
Summary: This study investigated the temporal dynamics and assembly mechanisms of epiphytic bacteria in natural ecosystems. Results showed differentiated community dynamics for different substrates, with selection, drift, and dispersal playing different roles in affecting the assembly of epiphytic bacteria. The study also found higher turnover rates and more intense interactions within the epiphytic bacterial communities of high-phenolic plants, suggesting the importance of considering epiphytic biofilm dynamics in submerged macrophytes used for biological purification.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Marine & Freshwater Biology
Darren Garland, Frances Lucy, Nicolas Touzet
Summary: This study investigated cyanobacterial diversity and associated environmental factors in a lake in north-west Ireland that had previously been affected by algal blooms. The results showed spatial heterogeneity in photosynthetic pigment concentrations, which became more homogeneous towards the end of the survey. Temperature and photosynthetic pigments were found to be correlated with an increase in cyanobacterial richness. PCR-DGGE analysis also identified patterns in community composition, including the presence of toxigenic species similar to Microcystis sp.
Review
Food Science & Technology
Weizhen Zhang, Jing Liu, Yunxing Xiao, Yumiao Zhang, Yangjinzhi Yu, Zheng Zheng, Yafeng Liu, Qi Li
Summary: Cyanobacteria blooms are a global problem in aquatic environments, affecting water quality, ecosystems, and human health.
Article
Pharmacology & Pharmacy
Mohammadhossein Movassaghghazani, Nazanin Shabansalmani
Summary: The study revealed high levels of AFM1 in both breast milk and powdered milk samples in Tehran, with some samples exceeding the established limits. Therefore, monitoring and regulating toxin levels in these products is crucial for maternal and infant health.
Article
Pharmacology & Pharmacy
Defeng Wen, Wantong Han, Quan Chen, Guanhui Qi, Mengling Gao, Pu Guo, Yu Liu, Zhongyuan Wu, Shulin Fu, Qirong Lu, Yinsheng Qiu
Summary: Luteolin can inhibit FB1-induced intestinal inflammatory injury by inhibiting the activation of NF-kappa B and ERK signaling pathways, according to network pharmacology and in vitro experiments.
