Fatal attraction to cyanobacteria?

Codd, Geoffrey A.; Edwards, Christine; Beattle, K A; Barr, W M; Gunn, GJ

doi:10.1038/359110b0

Cited by 65 publications

(28 citation statements)

References 5 publications

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“…In addition it has been reported that animals of different species seem to drink preferentially waters contaminated by high cyanobacteria density rather than clean ones [97]. Cattle murrain, more than one hundred calves and heifers, has been documented in Switzerland alpine pastures [98].…”

Section: Animal Healthmentioning

confidence: 99%

Emerging health issues of cyanobacterial blooms

Manganelli

Scardala

Stefanelli

et al. 2012

Annali Dell'Istituto Superiore Di Sanità

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Abstract. This paper describes emerging issue related to cyanobacterial dynamics and toxicity and human health risks. Data show an increasing cyanobacteria expansion and dominance in many environments. However there are still few information on the toxic species fitness, or on the effects of specific drivers on toxin production. Open research fields are related to new exposure scenario (cyanotoxins in water used for haemodialysis and in food supplements); to new patterns of co-exposure between cyanotoxins and algal toxins and/or anthropogenic chemicals; to dynamics affecting toxicity and production of different cyanotoxin variants under environmental stress; to the accumulation of cyanotoxins in the food web. In addition, many data gaps exist in the characterization of the toxicological profiles, especially about long term effects.

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Section: Animal Healthmentioning

confidence: 99%

Emerging health issues of cyanobacterial blooms

Manganelli

Scardala

Stefanelli

et al. 2012

Annali Dell'Istituto Superiore Di Sanità

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“…Deaths of cattle and dogs have been attributed to M. aeruginosa (microcystins) and N. spumigena (nodularins) in England and Norway, respectively [19,27,46,84], and to Nodularia sp. (probably nodularins) and Anabaena flos-aquae (neurotoxin) in Sweden [126], but the main report of such poisoning has been in Switzerland, where more than 100 cattle deaths have been attributed to microcystin poisoning during the last two decades [78,81].…”

Section: Cyanobacterial Poisoning Of Terrestrial Vertebratesmentioning

confidence: 99%

Health hazards for terrestrial vertebrates from toxic cyanobacteria in surface water ecosystems

Briand¹,

Jacquet²,

et al. 2003

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-Toxigenic cyanobacteria are photosynthetic prokaryotes that are most often recognized in marine and freshwater systems, such as lakes, ponds, rivers, and estuaries. When environmental conditions (such as light, nutrients, water column stability, etc.) are suitable for their growth, cyanobacteria may proliferate and form toxic blooms in the upper, sunlit layers. The biology and ecology of cyanobacteria have been extensively studied throughout the world during the last two decades, but we still know little about the factors and processes involved in regulating toxin production for many cyanobacterial species. In this minireview, we discuss these microorganisms, and more especially the toxins they produce, as a potential and important health risk for wild and domestic animals.

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“…Various species of Nodularia synthesize powerful toxins that sometimes produce serious deleterious effects in animals (Codd and Poon 1988;Codd et al 1992). In spite of the interesting Abbreviation: NR = nitrate reductase Correspondence to: F.F.…”

Section: Introductionmentioning

confidence: 99%

Relationship between nitrogen fixation and nitrate metabolism in the Nodularia strains M1 and M2

Sanz-Alférez

Campo

1994

Planta

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Abstract. Nitrogen fixation and nitrate-reduction activities were determined in photoautotrophic cultures of two wild-type strains of cyanobacterium Nodularia, spp. M1 and M2. Air could support growth of the two strains at a similar rate in the presence or absence of exogenous nitrate, ammonium and/or bicarbonate. Nitrogenase activity in air-grown cultures varied with culture age, and totally disappeared after 6 h of darkness. Recovery took place upon culture re-illumination. Ammonium at a concentration of 1 mM resulted in the total disappearance of nitrogenase activity and of heterocysts. In contrast, 20 mM nitrate hardly affected nitrogenase activity and heterocyst formation after ten generations. Under the same conditions, either ammonium or nitrate completely abolished nitrogenase activity and heterocyst formation in Anabaena sp. PCC 7119, a typical heterocystous strain. The inefficiency of nitrate in inhibiting nitrogen fixation in Nodularia M1 and M2 seemed to be caused by a low nitrate-reductase activity, and not by an impairment of nitrate-uptake activity. On the other hand, the presence of nitrate was not required for uptake activity to be expressed in Nodularia.

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Fatal attraction to cyanobacteria?

Cited by 65 publications

References 5 publications

Emerging health issues of cyanobacterial blooms

Emerging health issues of cyanobacterial blooms

Health hazards for terrestrial vertebrates from toxic cyanobacteria in surface water ecosystems

Relationship between nitrogen fixation and nitrate metabolism in the Nodularia strains M1 and M2

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