Toxicity evaluation of nano-TiO2 in the presence of functionalized microplastics at two trophic levels: Algae and crustaceans

Thiagarajan, Vignesh; Alex, Sruthi Ann; Seenivasan, R.; Chandrasekaran, N.; Mukherjee, Amitava

doi:10.1016/j.scitotenv.2021.147262

Cited by 39 publications

(16 citation statements)

References 48 publications

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“…because the heteroaggregation of nano-TiO 2 and nano-PS reduced the bioavailability of the particles to the algae. Thiagarajan et al (2021) obtained similar results that the carboxylated PS microplastics decreased the toxicity of nano-TiO 2 in Chlorella sp., but the aminated and plain PS microplastics enhanced the toxicity of nano-TiO 2 . Huang et al (2019) investigated the joint toxicity of Ag and PS nanoparticles to two kinds of microalgae, and found that nano-PS showed opposite effects on Chlamydomonas rheinisch (increased) and Dinoflagellates (decreased) in terms of intracellular Ag accumulation.…”

supporting

confidence: 63%

Polystyrene nanoplastics alleviate the toxicity of CuO nanoparticles to the marine algae Platymonas helgolandica var. tsingtaoensis

et al. 2022

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The increasing presence of pollutants such as engineered nanoparticles (ENPs) and nanoplastics (NPLs) poses potential risks to the marine environment. However, there is a scarcity of information on their joint toxic effects. In this study, we investigated the toxicity of copper oxide nanoparticles (nCuO) combined with polystyrene nanoplastics (PS-NPLs) on the marine microalgae Platymonas helgolandica var. tsingtaoensis. The inhibitory effect of nCuO increased with increasing concentrations, and nCuO ≥ 100 mg/L significantly restrained the growth and chlorophyll content of microalgae. nCuO could be adsorbed by algal cells, which was responsible for membrane lipid oxidation and the disruption of membrane permeability. Simultaneous exposure to nCuO and PS-NPLs had a.n antagonistic effect on the growth inhibition of the microalgae, and nCuO played a leading role in the joint toxicity of nCuO and PS-NPLs. In comparison to nCuO exposure alone, combined exposure decreased the oxidative stress and alleviated the increase in the cell membrane permeability of microalgae. PS-NPLs could heteroaggregate with nCuO, which reduced the interaction between nCuO and microalgae, inducing decreased joint toxicity. Findings of this study will clarify our understanding of the joint toxicity of ENPs and NPLs.

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supporting

confidence: 63%

Polystyrene nanoplastics alleviate the toxicity of CuO nanoparticles to the marine algae Platymonas helgolandica var. tsingtaoensis

et al. 2022

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“…The interactions between MNMs and algal cells (e.g., heteroaggregation) may result in the attachment to the surface of the algal cells to absorb or block part of the light, inducing a light-shielding effect. The light-shielding effect of MNMs would further affect the photosynthesis of algae, which directly or indirectly affects the growth and reproduction of algae (Schwab et al, 2011;Hazeem et al, 2020;Thiagarajan et al, 2021;Wang et al, 2021b). Sadiq et al reported that the existence of nano-Al 2 O 3 had a certain light-shielding effect on Scenedesmus sp.…”

Section: Mnms Induced Light-shielding Effectmentioning

confidence: 99%

Effects of manufactured nanomaterials on algae: Implications and applications

Huang

Gao

Wang

et al. 2022

Front. Environ. Sci. Eng.

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The wide application of manufactured nanomaterials (MNMs) has resulted in the inevitable release of MNMs into the aquatic environment along their life cycle. As the primary producer in aquatic ecosystems, algae play a critical role in maintaining the balance of ecosystems’ energy flow, material circulation and information transmission. Thus, thoroughly understanding the biological effects of MNMs on algae as well as the underlying mechanisms is of vital importance. We conducted a comprehensive review on both positive and negative effects of MNMs on algae and thoroughly discussed the underlying mechanisms. In general, exposure to MNMs may adversely affect algae’s gene expression, metabolites, photosynthesis, nitrogen fixation and growth rate. The major mechanisms of MNMs-induced inhibition are attributed to oxidative stress, mechanical damages, released metal ions and light-shielding effects. Meanwhile, the rational application of MNMs-algae interactions would promote valuable bioactive substances production as well as control biological and chemical pollutants. Our review could provide a better understanding of the biological effects of MNMs on algae and narrow the knowledge gaps on the underlying mechanisms. It would shed light on the investigation of environmental implications and applications of MNMs-algae interactions and meet the increasing demand for sustainable nanotechnology development.

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“…S5. The formation of such hetero-aggregates may further exacerbate the settling and deposition process, thus reducing the availability of the NPs (Thiagarajan et al, 2021). HR-LCMS results demonstrated that TC degraded in the presence of TiO2 NPs under visible light, resulting in the formation of intermediate compounds (Fig.…”

Section: Fate Of Tio2 Nps and Tc In Aswmentioning

confidence: 99%

“…Moreover, there have been only a handful of studies to date reporting the joint toxicity of the contaminants in a phytoplankton-zooplankton trophic chain (Bergsten-Torralba et al, 2020;Thiagarajan et al, 2021;Yang et al, 2018). The species selected from each habitat might differ taxonomically and play different roles in ecosystems.…”

Section: Introductionmentioning

confidence: 99%

Mixture toxicity of TiO2 NPs and tetracycline at two trophic levels in the marine ecosystem: Chlorella sp. and Artemia salina

Thiagarajan

Seenivasan

Jenkins

et al. 2022

Science of The Total Environment

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Toxicity evaluation of nano-TiO2 in the presence of functionalized microplastics at two trophic levels: Algae and crustaceans

Cited by 39 publications

References 48 publications

Polystyrene nanoplastics alleviate the toxicity of CuO nanoparticles to the marine algae Platymonas helgolandica var. tsingtaoensis

Polystyrene nanoplastics alleviate the toxicity of CuO nanoparticles to the marine algae Platymonas helgolandica var. tsingtaoensis

Effects of manufactured nanomaterials on algae: Implications and applications

Mixture toxicity of TiO2 NPs and tetracycline at two trophic levels in the marine ecosystem: Chlorella sp. and Artemia salina

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