Effects of different algaecides on the photosynthetic capacity, cell integrity and microcystin-LR release of Microcystis aeruginosa

Zhou, Shiqing; Shao, Yawei; Gao, Naiyun; Deng, Yang; Qiao, Jinli; Ou, Huase; Deng, Jing

doi:10.1016/j.scitotenv.2013.05.064

Cited by 140 publications

(61 citation statements)

References 30 publications

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“…This is a potential general drawback of cyanocide application. A direct comparison of the MC-LR release potential of copper and other algicides like HP, diuron and ethyl 2-methylacetoacetate (EMA) for the four algicides showed the order CuSO 4 [ H 2 O 2 [ diuron [ EMA (Zhou et al 2013). However, it must be mentioned that concerns about toxin release associated with algicide application were based on laboratory studies using culture collection strains that may lack the cyanotoxin degrading environmental biotome (Zhou et al 2013;.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

“…The principle of algicidal activity is through presence of bioavailable Cu 2? ion that can denature enzymes, affect membrane permeability, and decrease photosynthetic activity, phosphorus uptake, and nitrogen fixation (Zhou et al 2013). The toxicity is not very rapidly evident and may require several days for completion, while the rate of copper disappearance to the sediment counteracts the wanted algicidal function (Qian et al 2010).…”

Section: Algicidal Function Of Coppermentioning

confidence: 99%

“…humic) substances, or conductivity and that the narrow concentration range between general algicidal and the wanted more specific cyanocidal functionality likely limits the selective application of copper as a specific cyanocide (Mastin and Rodgers 2000). It is also considered that the duration of cyanostatical effects of copper in aquatic ecosystems lasts for around 1 week only, which is due to rapid loss from the water phase through precipitation of copper as insoluble salts and hydroxylates (Cooke et al 1993;Zhou et al 2013;Fan et al 2013). A need for longerterm effectiveness requires repeated treatments, creating the problem of accumulation of Cu in the sediment with unknown risks for potential harm to diverse benthic life (Jancula and Marsalek 2011b).…”

Section: Algicidal Function Of Coppermentioning

confidence: 99%

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Existing and emerging cyanocidal compounds: new perspectives for cyanobacterial bloom mitigation

et al. 2016

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To help ban the use of general toxic algicides, research efforts are now directed towards the discovery of compounds that are specifically acting as cyanocides. Here, we review the past and look forward into the future, where the less desirable general algicides like copper sulphate, diuron or endothall may become replaced by compounds that show better specificity for cyanobacteria and are biodegradable or transform into non-toxic products after application. For a range of products, we review the activity, the mode of action, effectiveness, durability, toxicity towards non-target species, plus costs involved, and discuss the experience with and prospects for small water volume interventions up to the mitigation of entire lakes; we arrive at recommendations for a series of natural products and extracted organic compounds or derived synthetic homologues with promising cyanocidal properties, and briefly mention emerging nanoparticle applications. Finally, we detail on the recently introduced application of hydrogen peroxide for the selective killing of cyanobacteria in freshwater lakes.

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Section: Conclusion and Discussionmentioning

confidence: 99%

Section: Algicidal Function Of Coppermentioning

confidence: 99%

Section: Algicidal Function Of Coppermentioning

confidence: 99%

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Existing and emerging cyanocidal compounds: new perspectives for cyanobacterial bloom mitigation

et al. 2016

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“…3). Extending the incubation time from 1 to 10 days, significantly increased the cell density of Scenedesmus opoliensis at the low levels of glufosinate but significantly decreased the cell density of Scenedesmus acuminatus at the high levels of glufosinate [20]. The results reflect that while exposure to low amounts of glufosinate is better indicated by S. opoliensis, S. acuminatus indicates more specifically the deleterious effects of high herbicide concentration after a longer exposure time.…”

Section: Resultsmentioning

confidence: 70%

Comparative study on growth and photosynthetic pigment dynamics of two microalgae under the influence of water pollution with the herbicide glufosinate

Plugaru¹,

Fodorpataki²,

Orban³

et al. 2017

Studia UBB Chemia

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ABSTRACT. The aim of the study is to compare biochemical and physiological reactions of two related species of green microalgae (Scenedesmus acuminatus and Scenedesmus opoliensis), both considered suitable for bioindication and remediation of aquatic environments polluted with herbicides. Monoalgal axenic cultures were treated for 10 days under controlled conditions with different concentrations (from 0.1 μM to 100 µM) of glufosinate (a nonselective contact herbicide that inhibits glutamine synthase activity, thus disturbing photorespiration, inhibiting photosynthetic carbon assimilation, and generating ammonium excess in plant cells). S. opoliensis was found to be a better indicator of adverse effects of glufosinate than S. acuminatus. Changes in the ground chlorophyll fluorescence (reflecting light energy harvesting capacity), in cell division rate and in chlorophyll-a content may be early, costeffective and sensitive markers of herbicide impact on microalgal communities inhabiting polluted water. Our results bring new data concerning the need of selection among related test organisms based on differentiated tolerance, as well as concerning biochemical parameters suitable for evaluation of water pollution impact when organic xenobiotics accumulate in aquatic environments. Thus, the presented results may be applied in optimizing bioindication of water quality using microalgae, and in treatment of wastewater polluted due to agricultural practices.

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“…Also lysis of the M. aeruginosa cells could enhance decomposition and reduce oxygen concentrations. Moreover, cell lysis is considered the major mechanism of release of microcystins into the surrounding water [51]. Hence, it remains to be seen if treatment with L-lysine delivers immediate improve of the water quality.…”

Section: Discussionmentioning

confidence: 99%

Effect of Selected Plant Extracts and D- and L-Lysine on the Cyanobacterium Microcystis aeruginosa

Lürling

Oosterhout

2014

Water

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Abstract:We tested extracts from Fructus mume, Salvia miltiorrhiza and Moringa oleifera as well as L-lysine and D-Lysine as curative measures to rapidly suppress the cyanobacterium Microcystis aeruginosa NIVA-CYA 43. We tested these compounds under similar conditions to facilitate comparisons. We hypothesized that for each compound, relatively low concentrations-i.e., 5-50 mg L . F. mume extract was effective to do so at high concentrations, i.e., at ≥240 mg L −1 , but the others were virtually non-effective. Low pH caused by organic acids is a probable explanation for the effect of F. mume extract. No complete wipe-outs of the experimental population were achieved as Photosystem II efficiency showed a recovery after six days. L-lysine may be effective at low concentrations-meaning low material costs. However, the effect of L-lysine seems relatively short-lived. Overall, the results of our study did not support the use of the tested plant extracts and amino-acid as promising candidates for curative application in M. aeruginosa bloom control.

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Effects of different algaecides on the photosynthetic capacity, cell integrity and microcystin-LR release of Microcystis aeruginosa

Cited by 140 publications

References 30 publications

Existing and emerging cyanocidal compounds: new perspectives for cyanobacterial bloom mitigation

Existing and emerging cyanocidal compounds: new perspectives for cyanobacterial bloom mitigation

Comparative study on growth and photosynthetic pigment dynamics of two microalgae under the influence of water pollution with the herbicide glufosinate

Effect of Selected Plant Extracts and D- and L-Lysine on the Cyanobacterium Microcystis aeruginosa

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