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Articles de revues sur le sujet « Cyanobacteria Health aspects »

Auteur : Grafiati

Publié le 4 juin 2021

Mis à jour le 11 février 2022

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1

Vilar, Mauro C. P., Thiago F. C. P. Rodrigues, Luan O. Silva, Ana Beatriz F. Pacheco, Aloysio S. Ferrão-Filho, and Sandra M. F. O. Azevedo. "Ecophysiological Aspects and sxt Genes Expression Underlying Induced Chemical Defense in STX-Producing Raphidiopsis raciborskii (Cyanobacteria) against the Zooplankter Daphnia gessneri." Toxins 13, no. 6 (June 8, 2021): 406. http://dx.doi.org/10.3390/toxins13060406.

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Cyanobacteria stand out among phytoplankton when they form massive blooms and produce toxins. Because cyanotoxin genes date to the origin of metazoans, the hypothesis that cyanotoxins function as a defense against herbivory is still debated. Although their primary cellular function might vary, these metabolites could have evolved as an anti-predator response. Here we evaluated the physiological and molecular responses of a saxitoxin-producing Raphidiopsis raciborskii to infochemicals released by the grazer Daphnia gessneri. Induced chemical defenses were evidenced in R. raciborskii as a signif

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Mucci, Maíra, Iame A. Guedes, Elisabeth J. Faassen, and Miquel Lürling. "Chitosan as a Coagulant to Remove Cyanobacteria Can Cause Microcystin Release." Toxins 12, no. 11 (November 10, 2020): 711. http://dx.doi.org/10.3390/toxins12110711.

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Chitosan has been tested as a coagulant to remove cyanobacterial nuisance. While its coagulation efficiency is well studied, little is known about its effect on the viability of the cyanobacterial cells. This study aimed to test eight strains of the most frequent bloom-forming cyanobacterium, Microcystis aeruginosa, exposed to a realistic concentration range of chitosan used in lake restoration management (0 to 8 mg chitosan L−1). We found that after 1 h of contact with chitosan, in seven of the eight strains tested, photosystem II efficiency was decreased, and after 24 h, all the strains test

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Śliwińska-Wilczewska, Sylwia, Aldo Barreiro Felpeto, Katarzyna Możdżeń, Vitor Vasconcelos, and Adam Latała. "Physiological Effects on Coexisting Microalgae of the Allelochemicals Produced by the Bloom-Forming Cyanobacteria Synechococcus sp. and Nodularia Spumigena." Toxins 11, no. 12 (December 6, 2019): 712. http://dx.doi.org/10.3390/toxins11120712.

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Only a few studies have documented the physiological effects of allelopathy from cyanobacteria against coexisting microalgae. We investigated the allelopathic ability of the bloom-forming cyanobacteria Synechococcus sp. and Nodularia spumigena filtrates on several aspects related to the physiology of the target species: population growth, cell morphology, and several indexes of photosynthesis rate and respiration. The target species were the following: two species of green algae (Oocystis submarina, Chlorella vulgaris) and two species of diatoms (Bacillaria paxillifer, Skeletonema marinoi). Th

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Mallick, Ranjana. "Implication of blue green algae on yield attributes and economics of rice cultivation." International Journal of Bioassays 6, no. 06 (June 1, 2017): 5386. http://dx.doi.org/10.21746/ijbio.2017.06.001.

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Indian agriculture is presently at cross roads as it has to increase output at one hand and has to take care of environmental aspects on the other hand. Rice cultivation is also facing the same dilemma. Use of blue green algae as bio fertilizer is one possible way to minimize application of synthetic fertilizers which have far reaching implications on environment and health. Present research study was formulated to screen most suitable combination of different species of cyanobacteria on yield attribute of Vandana variety of rice grown in Hazaribagh district. Three species of cyanobacteria, An

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dos Santos Costa, Rafaela, Gabrielle Rabelo Quadra, Helena de Oliveira Souza, Viviane Souza do Amaral, and Julio Alejandro Navoni. "The link between pharmaceuticals and cyanobacteria: a review regarding ecotoxicological, ecological, and sanitary aspects." Environmental Science and Pollution Research 28, no. 31 (June 12, 2021): 41638–50. http://dx.doi.org/10.1007/s11356-021-14698-5.

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Gӓrtner, Georg, Maya Stoyneva-Gӓrtner, and Blagoy Uzunov. "Algal Toxic Compounds and Their Aeroterrestrial, Airborne and other Extremophilic Producers with Attention to Soil and Plant Contamination: A Review." Toxins 13, no. 5 (April 29, 2021): 322. http://dx.doi.org/10.3390/toxins13050322.

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The review summarizes the available knowledge on toxins and their producers from rather disparate algal assemblages of aeroterrestrial, airborne and other versatile extreme environments (hot springs, deserts, ice, snow, caves, etc.) and on phycotoxins as contaminants of emergent concern in soil and plants. There is a growing body of evidence that algal toxins and their producers occur in all general types of extreme habitats, and cyanobacteria/cyanoprokaryotes dominate in most of them. Altogether, 55 toxigenic algal genera (47 cyanoprokaryotes) were enlisted, and our analysis showed that besid

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Shaw, G., and P. K. S. Lam. "Health aspects of freshwater cyanobacterial toxins." Water Supply 7, no. 2 (July 1, 2007): 193–203. http://dx.doi.org/10.2166/ws.2007.054.

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Cyanobacterial (blue-green algal) toxins are known to cause poisoning in humans, livestock and wild animals. Based on their toxic mechanisms, cyanobacterial toxins are generally categorized as neurotoxins, hepatotoxins or cytotoxins. The acute oral toxicities of these toxins vary substantially, with the saxitoxins being the most toxic having an LD50 of 60 μg/kg. By comparison, the acute oral LD50 for microcystin LR (the most toxic congener) and cylindrospermopsin are approximately 5,000 to 10,000 μg/kg and 6,000 μg/kg over 5 days, respectively. There are well known adverse health issues of cya

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Pereira, Alessandro Rhadamek Alves, João Batista Lopes, Giovana Mira de Espindola, and Carlos Ernando da Silva. "Retrieval and mapping of chlorophyll-a concentration from Sentinel-2 images in an urban river in the semiarid region of Brazil." Ambiente e Agua - An Interdisciplinary Journal of Applied Science 15, no. 2 (April 8, 2020): 1. http://dx.doi.org/10.4136/ambi-agua.2488.

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Recently, the Poti river mouth region has experienced environmental impacts that resulted in a change of landscape in its dry season, highlighting the eutrophication and proliferation of phytoplankton, algae, cyanobacteria and aquatic plants. Considering the aspects related to water-quality monitoring in the semiarid region of Brazil from remote sensing, this study aimed to evaluate the performance of Sentinel-2A satellite data in the retrieval of chlorophyll-a concentration in Poti River in Teresina, Piaui, Brazil. The chlorophyll-a concentration retrieval and mapping methodology involved the

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Cunha, Isabel, Rita Biltes, MGF Sales, and Vitor Vasconcelos. "Aptamer-Based Biosensors to Detect Aquatic Phycotoxins and Cyanotoxins." Sensors 18, no. 7 (July 20, 2018): 2367. http://dx.doi.org/10.3390/s18072367.

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Aptasensors have a great potential for environmental monitoring, particularly for real-time on-site detection of aquatic toxins produced by marine and freshwater microorganisms (cyanobacteria, dinoflagellates, and diatoms), with several advantages over other biosensors that are worth considering. Freshwater monitoring is of vital importance for public health, in numerous human activities, and animal welfare, since these toxins may cause fatal intoxications. Similarly, in marine waters, very effective monitoring programs have been put in place in many countries to detect when toxins exceed esta

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Tazart, Zakaria, Maura Manganelli, Simona Scardala, Franca Maria Buratti, Federica Nigro Di Gregorio, Mountasser Douma, Khadija Mouhri, Emanuela Testai, and Mohammed Loudiki. "Remediation Strategies to Control Toxic Cyanobacterial Blooms: Effects of Macrophyte Aqueous Extracts on Microcystis aeruginosa (Growth, Toxin Production and Oxidative Stress Response) and on Bacterial Ectoenzymatic Activities." Microorganisms 9, no. 8 (August 23, 2021): 1782. http://dx.doi.org/10.3390/microorganisms9081782.

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Increasing toxic cyanobacterial blooms in freshwater demand environmentally friendly solutions to control their growth and toxicity, especially in arid countries, where most drinking water is produced from surface reservoirs. We tested the effects of macrophyte allelochemicals on Microcystis aeruginosa and on the fundamental role of bacteria in nutrient recycling. The effects of Ranunculus aquatilis aqueous extract, the most bioactive of four Moroccan macrophyte extracts, were tested in batch systems on M. aeruginosa growth, toxin production and oxidative stress response and on the ectoenzymat

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Daus, Milan, Katharina Koberger, Nele Gnutzmann, Tobias Hertrich, and Rüdiger Glaser. "Transferring Water While Transforming Landscape: New Societal Implications, Perceptions and Challenges of Management in the Reservoir System Franconian Lake District." Water 11, no. 12 (November 23, 2019): 2469. http://dx.doi.org/10.3390/w11122469.

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This study investigates the different stakeholder based discourses and challenges around the Franconian Lake District (FLD), a recently constructed large reservoir system in Germany. The construction and operation of reservoirs represent a massive alteration of their natural and social environments leading to discourses and potential conflicts between a wide scope of heterogeneous interest patterns. Studies have shown that large reservoirs can be an important contributor to water supply, irrigation, energy storage and therefore climate change mitigation on a global scale, which brings these co

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Malviya, Deepti, Pramod Kumar Sahu, Udai B. Singh, Surinder Paul, Amrita Gupta, Abhay Raj Gupta, Shailendra Singh, et al. "Lesson from Ecotoxicity: Revisiting the Microbial Lipopeptides for the Management of Emerging Diseases for Crop Protection." International Journal of Environmental Research and Public Health 17, no. 4 (February 23, 2020): 1434. http://dx.doi.org/10.3390/ijerph17041434.

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Microorganisms area treasure in terms of theproduction of various bioactive compounds which are being explored in different arenas of applied sciences. In agriculture, microbes and their bioactive compounds are being utilized in growth promotion and health promotion withnutrient fortification and its acquisition. Exhaustive explorations are unraveling the vast diversity of microbialcompounds with their potential usage in solving multiferous problems incrop production. Lipopeptides are one of such microbial compounds which havestrong antimicrobial properties against different plant pathogens. T

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Du, Xingde, Haohao Liu, Le Yuan, Yueqin Wang, Ya Ma, Rui Wang, Xinghai Chen, Michael Losiewicz, Hongxiang Guo, and Huizhen Zhang. "The Diversity of Cyanobacterial Toxins on Structural Characterization, Distribution and Identification: A Systematic Review." Toxins 11, no. 9 (September 12, 2019): 530. http://dx.doi.org/10.3390/toxins11090530.

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The widespread distribution of cyanobacteria in the aquatic environment is increasing the risk of water pollution caused by cyanotoxins, which poses a serious threat to human health. However, the structural characterization, distribution and identification techniques of cyanotoxins have not been comprehensively reviewed in previous studies. This paper aims to elaborate the existing information systematically on the diversity of cyanotoxins to identify valuable research avenues. According to the chemical structure, cyanotoxins are mainly classified into cyclic peptides, alkaloids, lipopeptides,

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Sotiroudis, Theodore, and Georgios Sotiroudis. "Health aspects of Spirulina (Arthrospira) microalga food supplement." Journal of the Serbian Chemical Society 78, no. 3 (2013): 395–405. http://dx.doi.org/10.2298/jsc121020152s.

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Spirulina, now named Arthrospira, is a microscopic and filamentous cyanobacterium that has a long history of use as a safe food lacking toxicity. It is commercially produced in large outdoor ponds under controlled conditions. The aim of this review article is to summarize available recent information concerning human clinical potential and applications of Spirulina, as well as clinical data related to the safety and side effects of Spirulina. Potential health benefits of Spirulina are mainly due to its chemical composition, which includes proteins (the highest protein content of any natural fo

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Bereded, Negash Kabtimer, Getachew Beneberu Abebe, Solomon Workneh Fanta, Manuel Curto, Herwig Waidbacher, Harald Meimberg, and Konrad J. Domig. "The Impact of Sampling Season and Catching Site (Wild and Aquaculture) on Gut Microbiota Composition and Diversity of Nile Tilapia (Oreochromis niloticus)." Biology 10, no. 3 (March 1, 2021): 180. http://dx.doi.org/10.3390/biology10030180.

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The gut microbiota of fishes is known to play an essential role in diverse aspects of host biology. The gut microbiota of fish is affected by various environmental parameters, including temperature changes, salinity and diet. Studies of effect of environment on gut microbiota enables to have a further understanding of what comprises a healthy microbiota under different environmental conditions. However, there is insufficient understanding regarding the effects of sampling season and catching site (wild and aquaculture) on the gut microbiota of Nile tilapia. This study characterised gut microbi

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Mazurkiewicz, Jakub, Agata Mazur, Robert Mazur, Krzysztof Chmielowski, Wojciech Czekała, and Damian Janczak. "The Process of Microbiological Remediation of the Polluted Słoneczko Reservoir in Poland: For Reduction of Water Pollution and Nutrients Management." Water 12, no. 11 (October 26, 2020): 3002. http://dx.doi.org/10.3390/w12113002.

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The article discusses the impact of nutrients from sewage on the state of the sewage receiver. Bioremediation was carried out through the use of effective microorganisms. The potential recovery of valuable mineral and organic substances in the form of fertilizers was also examined. The Słoneczko Reservoir is a bathing area and serves many people in the summertime as a place of water recreation. Water quality deteriorated intensively from 2006 as a result of illegal wastewater discharge and the impact of fecal pollution from bathers. The high concentration of nutrients in the water was the caus

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Adamski, Michał, Ewelina Chrapusta, Beata Bober, Ariel Kamiński, and Jan Białczyk. "Cylindrospermopsin: cyanobacterial secondary metabolite. Biological aspects and potential risk for human health and life." Oceanological and Hydrobiological Studies 43, no. 4 (January 1, 2014). http://dx.doi.org/10.2478/s13545-014-0148-5.

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AbstractCylindrospermopsin (CYN) is a cytotoxin produced by several species of cyanobacteria, which occur all over the world. It was demonstrated that CYN has a wide spectrum of biological activity in animal cells, involving hepatotoxicity, genotoxicity, cytotoxicity and carcinogenic potential, and is considered as one of the factors that caused human poisoning in Palm Island (Australia) and in Caruaru (Brazil). This compound may be introduced into organism by several ways, including consumption of water, fishes and seafood as well as accidental swallowing or aerosol spray inhalation during re

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Zeigler Allen, Lisa, John P. McCrow, Karolina Ininbergs, Christopher L. Dupont, Jonathan H. Badger, Jeffery M. Hoffman, Martin Ekman, Andrew E. Allen, Birgitta Bergman, and J. Craig Venter. "The Baltic Sea Virome: Diversity and Transcriptional Activity of DNA and RNA Viruses." mSystems 2, no. 1 (February 14, 2017). http://dx.doi.org/10.1128/msystems.00125-16.

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ABSTRACT Inferred virus-host relationships, community structures of ubiquitous ecologically relevant groups, and identification of transcriptionally active populations have been achieved with our Baltic Sea study. Further, these data, highlighting the transcriptional activity of viruses, represent one of the more powerful uses of omics concerning ecosystem health. The use of omics-related data to assess ecosystem health holds great promise for rapid and relatively inexpensive determination of perturbations and risk, explicitly with regard to viral assemblages, as no single marker gene is suita

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Petersen, Jillian M., and Benedict Yuen. "The symbiotic ‘all-rounders’: Partnerships between marine animals and chemosynthetic nitrogen-fixing bacteria." Applied and Environmental Microbiology, December 18, 2020, AEM.02129–20. http://dx.doi.org/10.1128/aem.02129-20.

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Nitrogen fixation is a widespread metabolic trait in certain types of microorganisms called diazotrophs. Bioavailable nitrogen is limited in various habitats on land and in the sea, and accordingly, a range of plant, animal, and single-celled eukaryotes have evolved symbioses with diverse diazotrophic bacteria, with enormous economic and ecological benefits. Until recently, all known nitrogen-fixing symbionts were heterotrophs such as nodulating rhizobia, or photoautotrophs such as cyanobacteria. In 2016, the first chemoautotrophic nitrogen-fixing symbionts were discovered in a common family o

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Kubickova, Barbara, Carmel Ramwell, Klara Hilscherova, and Miriam Naomi Jacobs. "Highlighting the gaps in hazard and risk assessment of unregulated Endocrine Active Substances in surface waters: retinoids as a European case study." Environmental Sciences Europe 33, no. 1 (February 13, 2021). http://dx.doi.org/10.1186/s12302-020-00428-0.

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AbstractRegulatory hazard and risk assessment of endocrine-active substances currently specifies four modes of action: interference with sex hormone (oestrogen, androgen) pathways, steroidogenesis, and thyroid hormone signalling. This does not encompass the full complexity of the endocrine system and its extended interfaces with environmental pollutants that can potentially disrupt the carefully maintained balance. Here we take the retinoid signalling pathway as a European case study for both, under- and unregulated endocrine pathways and outline the different levels of interference, discuss t

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Zhang, Chiqian, Ke Qin, Ian Struewing, Helen Buse, Jorge Santo Domingo, Darren Lytle, and Jingrang Lu. "The Bacterial Community Diversity of Bathroom Hot Tap Water Was Significantly Lower Than That of Cold Tap and Shower Water." Frontiers in Microbiology 12 (April 23, 2021). http://dx.doi.org/10.3389/fmicb.2021.625324.

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Microbial drinking water quality in premise plumbing systems (PPSs) strongly affects public health. Bacterial community structure is the essential aspect of microbial water quality. Studies have elucidated the microbial community structure in cold tap water, while the microbial community structures in hot tap and shower water are poorly understood. We sampled cold tap, hot tap, and shower water from a simulated PPS monthly for 16 consecutive months and assessed the bacterial community structures in those samples via high-throughput sequencing of bacterial 16S rRNA genes. The total relative abu

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