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Letteratura scientifica selezionata sul tema "Cyanobacteria Health aspects"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 11 febbraio 2022

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Articoli di riviste sul tema "Cyanobacteria Health aspects"

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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Abstract (sommario):

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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Più fonti

Tesi sul tema "Cyanobacteria Health aspects"

Froscio, Suzanne M. "Investigation of the mechanisms involved in cylindrospermopsin toxicity : hepatocyte culture and reticulocyte lysate studies." Title page, contents and abstract only, 2002. http://web4.library.adelaide.edu.au/theses/09PH/09phf938.pdf.

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Bibliography: leaves 121-139. The aim of this study was to determine the extent to which protein synthesis inhibition, lowered glutathione (GSH) levels and toxin metabolism contribute to the toxicity of cyclindrospermopsin. Both hepatocyte cultures and reticulocyte lysates were utilized as in vitro tools of investigation. The findings imply that the inhibition of protein synthesis by direct action of the toxin cannot be considered a primary cause of hepatocyte cell death over an acute time frame. Cytochrome P450-derived metabolites may play a crucial role in cytotoxicity, and the toxicity proc

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Osborne, Nicholas John Thomas. "Investigation of the toxicology and public health aspects of the marine cyanobacterium, Lyngbya majuscula /." [St. Lucia, Qld.], 2004. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18107.pdf.

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Libri sul tema "Cyanobacteria Health aspects"

Lucentini, Luca. Cyanobacteria in water for human consumption: Guidelines for risk management. Roma: Istitutio superiore di sanità, 2013.

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Lucentini, Luca, and Massimo Ottaviani. Cianobatteri in acque destinate al consumo umano. Roma: Instituto superiore di sanità, 2011.

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A, Codd G., Roberts C, Public Health Laboratory Service, and Association of Medical Microbiologists, eds. Public health aspects of Cyanobacteria (blue-green algae). London: PublicHealth Laboratory Service, 1991.

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Kenneth, Hudnell H., ed. Cyanobacterial harmful algal blooms: State of the science and research needs. New York: Springer, 2008.

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Capitoli di libri sul tema "Cyanobacteria Health aspects"

"HUMAN HEALTH ASPECTS." In Toxic Cyanobacteria in Water, 133–74. CRC Press, 1999. http://dx.doi.org/10.1201/9781482295061-10.

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