Contributions of Zn Ions to ZnO Nanoparticle Toxicity on Microcystis aeruginosa During Chronic Exposure

Du, Jingjing; Guo, Ruilin; Li, Ké; Ma, Bingbing; Chen, Yan; Lv, Yanna

doi:10.1007/s00128-019-02725-8

Cited by 11 publications

(3 citation statements)

References 27 publications

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“…NMs can also have toxic effects on primary consumers, by inhibiting the algal growth rate, reducing chlorophyll content, and altering the fatty acid composition, ROS, and lipid peroxidation (MDA) [ 21 , 22 ]. In addition, a direct action upon the algal membrane integrity was found in microalgae exposed to metal oxide NPs, such as TiO 2 and silicon dioxide (SiO 2 ) NPs [ 23 ].…”

Section: Resultsmentioning

confidence: 99%

Nanomaterial Ecotoxicology in the Terrestrial and Aquatic Environment: A Systematic Review

Gambardella

Pinsino

2022

Toxics

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This systematic review analyzes the studies available on the ecotoxicity of nanomaterials (NMs) in the environment to understand where future research should be addressed for achieving Agenda 2030 goals on sustainable development and environmental safety. We discuss the status of NMs ecotoxicological effects across different organisms that are representative of all natural environments (land, air, water). A total of 1562 publications were retrieved from the Web of Science (all databases) by using the search criteria “nanomaterials” and “ecotoxicology”; among them, 303 studies were included in the systematic review because they met any of the following criteria: (i) focalize on both search criteria; (ii) deal with terrestrial, or aquatic environment; (iii) address models (organisms, cells) for the nano environmental risk assessment and exposure. The knowledge gaps are identified together with novel insights that need to be further investigated to better understand the ecotoxicological environmental impacts of NMs.

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Section: Resultsmentioning

confidence: 99%

Nanomaterial Ecotoxicology in the Terrestrial and Aquatic Environment: A Systematic Review

Gambardella

Pinsino

2022

Toxics

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“…A Zn 2+ exposure experiment was carried out at 0.5, 1, and 2 mg L −1 concentration at the same time, referring to a large number of relevant studies and our preliminary experimental results. 20,[50][51][52][53] To promote CO 2 dissolution and avoid algae precipitation and adsorption on the container walls, the flasks were shaken three times a day and were placed randomly in the incubator every day to avoid the influence of uneven light distribution.…”

Section: Algal Growth Inhibition Testsmentioning

confidence: 99%

Single and combined nanotoxicity of ZnO nanoparticles and graphene quantum dots against the microalgaHeterosigma akashiwo

Wang

Zhu

Tan

et al. 2022

Environ. Sci.: Nano

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“…Sun et al extracted ZnO nanoparticles (ZnO NPs) from commercially available sunscreens and demonstrated their efficacy as photocatalysts for degrading microplastics . ZnO NPs have been detected in aquatic environment at concentrations ranging from ng/L to mg/L, , posing potential risks to ecosystems and human health. , In aquatic environments, ZnO NPs have been observed to accelerate the conversion of organic phosphorus (OP) to inorganic phosphorus (IP) . This transformation process may facilitate phosphorus (P) utilization by algae, consequently impacting algal growth.…”

Section: Introductionmentioning

confidence: 99%

Deciphering the Impact of ZnO Nanoparticles and a Sunscreen Product Containing ZnO on Phosphorus Dynamics and Release in Chlorella pyrenoidosa in Aquatic Systems

Cao,

Wang,

et al. 2024

Environ. Sci. Technol.

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Zinc oxide nanoparticles (ZnO NPs) expedite the conversion of organic phosphorus (OP) into PO 4 −P (Pi), facilitating phosphorus (P) absorption by algae. Our study explored the mechanisms of converting OP (2-aminoethylphosphonic acid (AEP) and β-glycerol phosphate (β-GP)) into Pi in Chlorella pyrenoidosa under P deficiency with sunscreen and ZnO NPs. Cell density followed the order of K 2 HPO 4 > β-GP+ZnO > β-GP > AEP+ZnO > AEP > P-free. ZnO NPs promoted the conversion of β-GP, containing C−O−P bonds (0.028−0.041 mg/ L), into Pi more efficiently than AEP, which possesses C−P bonds (0.022−0.037 mg/L). Transcriptomics revealed Pi transport/ metabolism (phoB (3.99−12.01 fold), phoR (2.20−5.50 fold), ppa (4.49−10.40 fold), and ppk (2.50−5.40 fold)) and phospholipid metabolism (SQD1 (1.85−2.79 fold), SQD2 (2.60−6.53 fold), MGD (2.13−3.21 fold), and DGD (4.08−7.56 fold)) were up-regulated compared to K 2 HPO 4 . 31 P nuclear magnetic resonance spectroscopy identified intracellular P as polyphosphate, orthophosphate, and pyrophosphate. Synchrotron radiation-based X-ray near-edge structure spectroscopy indicated that K 2 HPO 4 and Zn 3 (PO 4 ) 2 in β-GP+ZnO were increased by 8.09% and 7.28% compared to AEP+ZnO, suggesting superior P storage in β-GP+ZnO. Overall, ZnO NPs improved photoinduced electron−hole pair separation and charge separation efficiency and amplified the •OH and •O 2 − levels, promoting OP photoconversion into Pi and algae growth.

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Contributions of Zn Ions to ZnO Nanoparticle Toxicity on Microcystis aeruginosa During Chronic Exposure

Cited by 11 publications

References 27 publications

Nanomaterial Ecotoxicology in the Terrestrial and Aquatic Environment: A Systematic Review

Nanomaterial Ecotoxicology in the Terrestrial and Aquatic Environment: A Systematic Review

Single and combined nanotoxicity of ZnO nanoparticles and graphene quantum dots against the microalgaHeterosigma akashiwo

Deciphering the Impact of ZnO Nanoparticles and a Sunscreen Product Containing ZnO on Phosphorus Dynamics and Release in Chlorella pyrenoidosa in Aquatic Systems

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