Hydrogen peroxide treatment promotes chlorophytes over toxic cyanobacteria in a hyper-eutrophic aquaculture pond

Yang, Zhi‐gang; Buley, Riley P.; Fernandez-Figueroa, Edna G.; Barros, Mário Ubirajara Gonçalves; Rajendran, Soorya; Wilson, Alan E.

doi:10.1016/j.envpol.2018.05.012

Cited by 79 publications

(87 citation statements)

References 37 publications

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“…has provided very similar conclusions (Figure 4). In contrast, a field experiment by Yang et al [5] and the laboratory study of Fan et al [26] indicated a significant decrease of both extra-and intra-cellular MC fractions (7 and 3 days after treatment with 6.7 and 10.2 mg L −1 of H 2 O 2 , respectively). Thus, depending on the investigated cyanobacterial strains (or natural populations), the results may differ significantly and the final effect of treatment may vary.…”

Section: Treatment In Lake Ludošmentioning

confidence: 85%

“…A successful application of H 2 O 2 against cyanobacteria has been shown in many studies [5,19,20] since H 2 O 2 was first proposed as an effective algicide by Kay et al [21]. However, many studies only examined H 2 O 2 toxicity in the MC-producing species from Planktothrix and Microcystis genera.…”

Section: Treatment In Lake Ludošmentioning

confidence: 99%

“…On the other hand, recent research on MC involvement in defence against oxidative stress [3] documented that MC-producing strains are less resistant to H 2 O 2 than non-toxic strains. Further, field experiments have provided other arguments that H 2 O 2 used alone is not effective in fast MC elimination [4,5]. Moreover, different responses have been observed among cyanobacteria taxa, indicating a possible species-specific adaptation to H 2 O 2 .…”

Section: Introductionmentioning

confidence: 99%

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The Effect of a Combined Hydrogen Peroxide-MlrA Treatment on the Phytoplankton Community and Microcystin Concentrations in a Mesocosm Experiment in Lake Ludoš

Dziga

Tokodi

Drobac

et al. 2019

Toxins

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Harmful cyanobacteria and their toxic metabolites constitute a big challenge for the production of safe drinking water. Microcystins (MC), chemically stable hepatotoxic heptapeptides, have often been involved in cyanobacterial poisoning incidents. A desirable solution for cyanobacterial management in lakes and ponds would eliminate both excess cyanobacteria and the MC that they potentially produce and release upon lysis. Hydrogen peroxide (H 2 O 2 ) has recently been advocated as an efficient means of lysing cyanobacteria in lakes and ponds, however H 2 O 2 (at least when used at typical concentrations) cannot degrade MC in environmental waters. Therefore, mesocosm experiments combining the cyanobacteria-lysing effect of H 2 O 2 and the MC-degrading capacity of the enzyme MlrA were set up in the highly eutrophic Lake Ludoš (Serbia). The H 2 O 2 treatment decreased the abundance of the dominant cyanobacterial taxa Limnothrix sp., Aphanizomenon flos-aquae, and Planktothrix agardhii. The intracellular concentration of MC was reduced/eliminated by H 2 O 2 , yet the reduction of the extracellular MC could only be accomplished by supplementation with MlrA. However, as H 2 O 2 was found to induce the expression of mcyB and mcyE genes, which are involved in MC biosynthesis, the use of H 2 O 2 as a safe cyanobacteriocide still requires further investigation. In conclusion, the experiments showed that the combined use of H 2 O 2 and MlrA is promising in the elimination of both excess cyanobacteria and their MC in environmental waters. Key Contribution:A new concept has been proposed for rapid and efficient mitigation of MC-producing cyanobacterial biomass through a combined treatment with H 2 O 2 and microcystinase (MlrA).

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Section: Treatment In Lake Ludošmentioning

confidence: 85%

Section: Treatment In Lake Ludošmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The Effect of a Combined Hydrogen Peroxide-MlrA Treatment on the Phytoplankton Community and Microcystin Concentrations in a Mesocosm Experiment in Lake Ludoš

Dziga

Tokodi

Drobac

et al. 2019

Toxins

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“…, Yang et al. ). The herbicide glyphosate is another commonly used algaecide with a low toxicity to aquatic organisms, which also restrains the photosynthetic rate in cyanobacteria and consequently results in growth inhibition (Vannini et al.…”

mentioning

confidence: 99%

“…Hydrogen peroxide (H 2 O 2 ) is an efficient algaecide that inhibits cyanobacterial growth by inhibiting the synthesis of chlorophyll a and phycocyanin and reducing the photosynthetic activity (Chen et al 2016). After application, H 2 O 2 is degraded into water and oxygen, causing no secondary pollution in aquatic environments (Sinha et al 2018, Yang et al 2018. The herbicide glyphosate is another commonly used algaecide with a low toxicity to aquatic organisms, which also restrains the photosynthetic rate in cyanobacteria and consequently results in growth inhibition (Vannini et al 2015).…”

mentioning

confidence: 99%

Influence of mixed antibiotics on Microcystis aeruginosa during the application of glyphosate and hydrogen peroxide algaecides

Liu

Zhang

et al. 2019

Journal of Phycology

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Antibiotics regulate various physiological functions in cyanobacteria and may interfere with the control of cyanobacterial blooms during the application of algaecides. In this study, Microcystis aeruginosa was exposed to H2O2 and glyphosate for 7 d in the presence of coexisting mixed antibiotics (amoxicillin, spiramycin, tetracycline, ciprofloxacin, and sulfamethoxazole) at an environmentally relevant concentration of 100 ng · L−1. The mixed antibiotics significantly (P < 0.05) alleviated the growth inhibition effect of 15–45 μM H2O2 and 40–60 mg · L−1 glyphosate. According to the increased contents of chlorophyll a and protein, decreased content of malondialdehyde, and decreased activities of superoxide dismutase and glutathione S‐transferase, antibiotics may reduce the toxicity of the two algaecides through the stimulation of photosynthesis and the reduction in oxidative stress. The presence of coexisting antibiotics stimulated the production and release of microcystins in the M. aeruginosa exposed to low concentrations of algaecides and posed an increased threat to aquatic environments. To eliminate the secondary pollution caused by microcystins, high algaecide doses that are ≥45 μM for H2O2 and ≥60 mg · L−1 for glyphosate are recommended. This study provides insights into the ecological hazards of antibiotic contaminants and the best management practices for cyanobacterial removal under combined antibiotic pollution conditions.

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Differential catalase activity and tolerance to hydrogen peroxide in the filamentous cyanobacteria Nostoc punctiforme ATCC 29133 and Anabaena sp. PCC 7120

et al. 2022

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Photoautotrophic cyanobacteria often confront hydrogen peroxide (H2O2), a reactive oxygen species potentially toxic to cells when present in su ciently high concentrations. In this study, H2O2 tolerance ability of lamentous cyanobacteria Nostoc punctiforme ATCC 29133 (Nostoc 29133) and Anabaena sp.PCC 7120 (Anabaena 7120) was investigated. Nostoc 29133 was better able to tolerate H2O2-induced inhibition of chlorophyll a and photosystem II performance, as compared to Anabaena 7120. The intracellular hydroperoxide level (indicator of oxidative status) also did not exhibit as much a rise in Nostoc 29133, as it did in Anabaena 7120 after H2O2 treatment. Accordingly, Nostoc 29133 showed higher intrinsic constitutive catalase activity than Anabaena 7120 indicating that the superior tolerance of Nostoc 29133 stems from its higher ability to decompose H2O2. It is suggested that difference in H2O2 tolerance between closely related lamentous cyanobacteria, as is borne out by this study, may be taken into account for judicious selection and effective use of strains in biotechnology.

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Hydrogen peroxide treatment promotes chlorophytes over toxic cyanobacteria in a hyper-eutrophic aquaculture pond

Cited by 79 publications

References 37 publications

The Effect of a Combined Hydrogen Peroxide-MlrA Treatment on the Phytoplankton Community and Microcystin Concentrations in a Mesocosm Experiment in Lake Ludoš

The Effect of a Combined Hydrogen Peroxide-MlrA Treatment on the Phytoplankton Community and Microcystin Concentrations in a Mesocosm Experiment in Lake Ludoš

Influence of mixed antibiotics on Microcystis aeruginosa during the application of glyphosate and hydrogen peroxide algaecides

Differential catalase activity and tolerance to hydrogen peroxide in the filamentous cyanobacteria Nostoc punctiforme ATCC 29133 and Anabaena sp. PCC 7120

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