Fungal biodegradation and removal of cyanobacteria and microcystins: potential applications and research needs

Mohamed, Zainal Abidin; Hashem, Mohamed; Alamri, Saad; Campos, Alexandre; Vasconcelos, Vítor

doi:10.1007/s11356-021-14623-w

Cited by 23 publications

(13 citation statements)

References 44 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the contrary, the M. aeruginosa cells are damaged in a short time under the treatment of T. abietinum 1302BG, I. lacteus T2b or T. hirsuta T24, and the anticyanobacterial process occurs "cell to cell" through the following steps: (1) the fungus comes into physical contact with the surface of the cyanobacterial cells; (2) cyanobacterial cells are encompassed with mycelia, which destroy the cyanobacterial cell wall and membrane; and (3) the nucleic acids and other substances of cyanobacteria cells are released [17]. Fungi have the natural ability to destroy Microcystis cells by secreting anticyanobacterial substances or through "cell to cell" contact.…”

Section: Anticyanobacterial Fungimentioning

confidence: 99%

See 1 more Smart Citation

Recent Advances in the Research on the Anticyanobacterial Effects and Biodegradation Mechanisms of Microcystis aeruginosa with Microorganisms

et al. 2022

View full text Add to dashboard Cite

Harmful algal blooms (HABs) have attracted great attention around the world due to the numerous negative effects such as algal organic matters and cyanobacterial toxins in drinking water treatments. As an economic and environmentally friendly technology, microorganisms have been widely used for pollution control and remediation, especially in the inhibition/biodegradation of the toxic cyanobacterium Microcystis aeruginosa in eutrophic water; moreover, some certain anticyanobacterial microorganisms can degrade microcystins at the same time. Therefore, this review aims to provide information regarding the current status of M. aeruginosa inhibition/biodegradation microorganisms and the acute toxicities of anticyanobacterial substances secreted by microorganisms. Based on the available literature, the anticyanobacterial modes and mechanisms, as well as the in situ application of anticyanobacterial microorganisms are elucidated in this review. This review aims to enhance understanding the anticyanobacterial microorganisms and provides a rational approach towards the future applications.

show abstract

Section: Anticyanobacterial Fungimentioning

confidence: 99%

“…Up to now, several review articles have been published to introduce the anticyanobacterial microorganisms including bacteria, viruses, and fungi [2,10,13,16,17]. However, the previous reviews have concentrated mainly on both the freshwater and marine cyanobacterial/algal species or diatoms.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in the Research on the Anticyanobacterial Effects and Biodegradation Mechanisms of Microcystis aeruginosa with Microorganisms

et al. 2022

View full text Add to dashboard Cite

show abstract

“…When such blooms are formed by toxin-producing cyanoprokaryotic algae, they are considered harmful and are usually abbreviated as CyanoHABs. The toxic substances are transported through the food webs and may reach people and animals by drinking water, or through other exposure routes, which include recreational activities or consumption of so-called “sea-food”, which includes both freshwater and marine organisms [ 3 – 5 ]. The excretion of toxic compounds may lead to environmental disasters—water poisoning, extinction of aquatic life, and even to human death [ 3 – 5 ].…”

Section: Introductionmentioning

confidence: 99%

“…The toxic substances are transported through the food webs and may reach people and animals by drinking water, or through other exposure routes, which include recreational activities or consumption of so-called “sea-food”, which includes both freshwater and marine organisms [ 3 – 5 ]. The excretion of toxic compounds may lead to environmental disasters—water poisoning, extinction of aquatic life, and even to human death [ 3 – 5 ]. Current climate changes and anthropogenic press can intensify and increase the frequency of these hazardous ecological events [ 3 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Review of Cyanotoxicity Studies Based on Cell Cultures

Sazdova

Keremidarska-Markova

Chichova

et al. 2022

Journal of Toxicology

View full text Add to dashboard Cite

Cyanotoxins (CTs) are a large and diverse group of toxins produced by the peculiar photosynthetic prokaryotes of the domain Cyanoprokaryota. Toxin-producing aquatic cyanoprokaryotes can develop in mass, causing “water blooms” or “cyanoblooms,” which may lead to environmental disaster—water poisoning, extinction of aquatic life, and even to human death. CT studies on single cells and cells in culture are an important stage of toxicological studies with increasing impact for their further use for scientific and clinical purposes, and for policies of environmental protection. The higher cost of animal use and continuous resistance to the use of animals for scientific and toxicological studies lead to a progressive increase of cell lines use. This review aims to present (1) the important results of the effects of CT on human and animal cell lines, (2) the methods and concentrations used to obtain these results, (3) the studied cell lines and their tissues of origin, and (4) the intracellular targets of CT. CTs reviewed are presented in alphabetical order as follows: aeruginosins, anatoxins, BMAA (β-N-methylamino-L-alanine), cylindrospermopsins, depsipeptides, lipopolysaccharides, lyngbyatoxins, microcystins, nodularins, cyanobacterial retinoids, and saxitoxins. The presence of all these data in a review allows in one look to advance the research on CT using cell cultures by facilitating the selection of the most appropriate methods, conditions, and cell lines for future toxicological, pharmacological, and physiological studies.

show abstract

“…Algal predation by bacteria [ 12 ] and algicidal bacteria [ 13 ] have also been evaluated. Even algicidal and toxin-degrading fungi have been tested [ 14 , 15 ]. Physical measures have also been evaluated, including the photodegradation of algal toxins [ 16 ].…”

Section: Introductionmentioning

confidence: 99%

Prophylactic Addition of Glucose Suppresses Cyanobacterial Abundance in Lake Water

Vesper

Sienkiewicz

Struewing

et al. 2022

Life

View full text Add to dashboard Cite

To mitigate harmful cyanobacterial blooms (HCBs), toxic algicides have been used, but alternative methods of HCB prevention are needed. Our goal was to test the prophylactic addition of glucose to inhibit HCB development, using Microcystis and the toxin microcystin as the HCB model. Water samples were collected weekly, from 4 June to 2 July, from Harsha Lake in southwestern Ohio during the 2021 algal bloom season. From each weekly sample, a 25 mL aliquot was frozen for a 16S rRNA gene sequencing analysis. Then, 200 mL of Harsha Lake water was added to each of the three culture flasks, and glucose was added to create concentrations of 0 mM (control), 1.39 mM, or 13.9 mM glucose, respectively. The microcystin concentration in each flask was measured after 1 and 2 weeks of incubation. The results showed an 80 to 90% reduction in microcystin concentrations in glucose-treated water compared to the control. At the end of the second week of incubation, a 25 mL sample was also obtained from each of the culture flasks for molecular analysis, including a 16S rRNA gene sequencing and qPCR-based quantification of Microcystis target genes. Based on these analyses, the glucose-treated water contained significantly lower Microcystis and microcystin producing gene (mcy) copy numbers than the control. The 16S rRNA sequencing analysis also revealed that Cyanobacteria and Proteobacteria were initially the most abundant bacterial phyla in the Harsha Lake water, but as the summer progressed, Cyanobacteria became the dominant phyla. However, in the glucose-treated water, the Cyanobacteria decreased and the Proteobacteria increased in weekly abundance compared to the control. This glucose-induced proteobacterial increase in abundance was driven primarily by increases in two distinct families of Proteobacteria: Devosiaceae and Rhizobiaceae. In conclusion, the prophylactic addition of glucose to Harsha Lake water samples reduced Cyanobacteria’s relative abundance, Microcystis numbers and microcystin concentrations and increased the relative abundance of Proteobacteria compared to the control.

show abstract

Fungal biodegradation and removal of cyanobacteria and microcystins: potential applications and research needs

Cited by 23 publications

References 44 publications

Recent Advances in the Research on the Anticyanobacterial Effects and Biodegradation Mechanisms of Microcystis aeruginosa with Microorganisms

Recent Advances in the Research on the Anticyanobacterial Effects and Biodegradation Mechanisms of Microcystis aeruginosa with Microorganisms

Review of Cyanotoxicity Studies Based on Cell Cultures

Prophylactic Addition of Glucose Suppresses Cyanobacterial Abundance in Lake Water

Contact Info

Product

Resources

About