Microcystis, Raphidiopsis raciborskii and Dolichospermum smithii, toxin producing and non-toxigenic cyanobacteria in Yezin Dam, Myanmar

Swe, Thida; Miles, Christopher O.; Cerasino, Leonardo; Mjelde, Marit; Kleiven, Synne; Ballot, Andreas

doi:10.1016/j.limno.2021.125901

Cited by 7 publications

(2 citation statements)

References 34 publications

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“…MCs were extracted from the air filters and measured according to the previous study ( Murby et al, 2016 ; Swe et al, 2021 ). Briefly, each sample was conducted with frozen and thawed at three times, and then the samples were applied with sonicating for 1 min and vortexing for 30 s. For measuring levels of MCs in the water samples, US EPA Method 546 was used.…”

Section: Methodsmentioning

confidence: 99%

Microbial communities in aerosol generated from cyanobacterial bloom-affected freshwater bodies: an exploratory study in Nakdong River, South Korea

et al. 2023

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Toxic blooms of cyanobacteria, which can produce cyanotoxins, are prevalent in freshwater, especially in South Korea. Exposure to cyanotoxins via ingestion, inhalation, and dermal contact may cause severe diseases. Particularly, toxic cyanobacteria and their cyanotoxins can be aerosolized by a bubble-bursting process associated with a wind-driven wave mechanism. A fundamental question remains regarding the aerosolization of toxic cyanobacteria and cyanotoxins emitted from freshwater bodies during bloom seasons. To evaluate the potential health risk of the aerosolization of toxic cyanobacteria and cyanotoxins, the objectives of this study were as follows: 1) to quantify levels of microcystin in the water and air samples, and 2) to monitor microbial communities, including toxic cyanobacteria in the water and air samples. Water samples were collected from five sites in the Nakdong River, South Korea, from August to September 2022. Air samples were collected using an air pump with a mixed cellulose ester membrane filter. Concentrations of total microcystins were measured using enzyme-linked immunosorbent assay. Shotgun metagenomic sequencing was used to investigate microbial communities, including toxic cyanobacteria. Mean concentrations of microcystins were 960 μg/L ranging from 0.73 to 5,337 μg/L in the water samples and 2.48 ng/m3 ranging from 0.1 to 6.8 ng/m3 in the air samples. In addition, in both the water and air samples, predominant bacteria were Microcystis (PCC7914), which has a microcystin-producing gene, and Cyanobium. Particularly, abundance of Microcystis (PCC7914) comprised more than 1.5% of all bacteria in the air samples. This study demonstrates microbial communities with genes related with microcystin synthesis, antibiotic resistance gene, and virulence factors in aerosols generated from cyanobacterial bloom-affected freshwater body. In summary, aerosolization of toxic cyanobacteria and cyanotoxins is a critical concern as an emerging exposure route for potential risk to environmental and human health.

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Section: Methodsmentioning

confidence: 99%

Microbial communities in aerosol generated from cyanobacterial bloom-affected freshwater bodies: an exploratory study in Nakdong River, South Korea

et al. 2023

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“…Long-term intake will lead to liver cancer lesions. Therefore, it is urgent to study the migration pathway of MCs to control the entry of MCs into the human body [ 76 ].…”

Section: The Impact Of Algal Toxins On Human Health and The Assessmen...mentioning

confidence: 99%

Transmission of Microcystins in Natural Systems and Resource Processes: A Review of Potential Risks to Humans Health

Ren

Wang

Zhang

et al. 2023

Toxins

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The rapid rise of microcystins (MCs) poses a serious threat to global freshwater ecosystems and has become an important issue of global public health. MCs have considerable stability and are the most widely distributed hepatotoxins. It cannot only accumulate in aquatic organisms and transfer to higher nutrients and levels, but also be degraded or transferred during the resource utilization of cyanobacteria. No matter which enrichment method, it will lead to the risk of human exposure. This review summarizes the research status of MCs, and introduces the distribution of MCs in different components of aquatic ecosystems. The distribution of MCs in different aquatic organisms was summarized, and the potential risks of MCs in the environment to human safety were summarized. MCs have polluted all areas of aquatic ecosystems. In order to protect human life from the health threats caused by MCs, this paper also proposes some future research directions to promote MCs control and reduce human exposure to MCs.

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Overview of the distribution and adaptation of a bloom-forming cyanobacterium Raphidiopsis raciborskii: integrating genomics, toxicity, and ecophysiology

Yang

Shi

2022

J. Ocean. Limnol.

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Microcystis, Raphidiopsis raciborskii and Dolichospermum smithii, toxin producing and non-toxigenic cyanobacteria in Yezin Dam, Myanmar

Cited by 7 publications

References 34 publications

Microbial communities in aerosol generated from cyanobacterial bloom-affected freshwater bodies: an exploratory study in Nakdong River, South Korea

Microbial communities in aerosol generated from cyanobacterial bloom-affected freshwater bodies: an exploratory study in Nakdong River, South Korea

Transmission of Microcystins in Natural Systems and Resource Processes: A Review of Potential Risks to Humans Health

Overview of the distribution and adaptation of a bloom-forming cyanobacterium Raphidiopsis raciborskii: integrating genomics, toxicity, and ecophysiology

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