Cell size matters: Nano- and micro-plastics preferentially drive declines of large marine phytoplankton due to co-aggregation

Dedman, Craig J.; Christie-Oleza, Joseph Alexander; Fernández-Juárez, Víctor; Echeveste, Pedro

doi:10.1016/j.jhazmat.2021.127488

Cited by 28 publications

(6 citation statements)

References 104 publications

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“…Another study found that PS microbeads decreased cellular esterase activities and the neutral lipid contents of marine diatoms, indicating MP-induced modulation of the diatom’s energy metabolism . Finally, impacts of PS spheres on an assortment of marine cyanobacteria, green algae, haptophyte, and diatoms indicate that size, morphology, and physiology of the tested algae determine the severity of impact on the algae and, in turn, their stress response . Larger-sized algae aided to coaggregation, and smaller MP exerted higher toxicity on larger algae, skewing the MP–phytoplankton size–volume ratio presented by other studies ,,, (Table ).…”

Section: Phytoplankton Growth and Metabolism Drastically Alter Due To...mentioning

confidence: 98%

Gross Negligence: Impacts of Microplastics and Plastic Leachates on Phytoplankton Community and Ecosystem Dynamics

Amaneesh

Balan

Silpa

et al. 2022

Environ. Sci. Technol.

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Plastic debris is an established environmental menace affecting aquatic systems globally. Recently, microplastics (MP) and plastic leachates (PL) have been detected in vital human organs, the vascular system, and in vitro animal studies positing severe health hazards. MP and PL have been found in every conceivable aquatic ecosystem�from open oceans and deep sea floors to supposedly pristine glacier lakes and snow covered mountain catchment sites. Many studies have documented the MP and PL impacts on a variety of aquatic organisms, whereby some exclusively focus on aquatic microorganisms. Yet, the specific MP and PL impacts on primary producers have not been systematically analyzed. Therefore, this review focuses on the threats posed by MP, PL, and associated chemicals on phytoplankton, their comprehensive impacts at organismal, community, and ecosystem scales, and their endogenous amelioration. Studies on MP-and PL-impacted individual phytoplankton species reveal the production of reactive oxygen species, lipid peroxidation, physical damage of thylakoids, and other physiological and metabolic changes, followed by homo-and heteroaggregations, ultimately eventuating in decreased photosynthesis and primary productivity. Likewise, analyses of the microbial community in the plastisphere show a radically different profile compared to the surrounding planktonic diversity. The plastisphere also enriches multidrug-resistant bacteria, cyanotoxins, and pollutants, accelerating microbial succession, changing the microbiome, and thus, affecting phytoplankton diversity and evolution. These impacts on cellular and community scales manifest in changed ecosystem dynamics with widespread bottom-up and top-down effects on aquatic biodiversity and food web interactions. These adverse effects�through altered nutrient cycling�have "knock-on" impacts on biogeochemical cycles and greenhouse gases. Consequently, these impacts affect provisioning and regulating ecosystem services. Our citation network analyses (CNA) further demonstrate dire effects of MP and PL on all trophic levels, thereby unsettling ecosystem stability and services. CNA points to several emerging nodes indicating combined toxicity of MP, PL, and their associated hazards on phytoplankton. Taken together, our study shows that ecotoxicity of plastic particles and their leachates have placed primary producers and some aquatic ecosystems in peril.

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Section: Phytoplankton Growth and Metabolism Drastically Alter Due To...mentioning

confidence: 98%

Gross Negligence: Impacts of Microplastics and Plastic Leachates on Phytoplankton Community and Ecosystem Dynamics

Amaneesh

Balan

Silpa

et al. 2022

Environ. Sci. Technol.

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“…Owing to the presence of NOM in Lake Geneva water, cellular photosynthetic regulation and increased immobility appear to be probably co-driven by ecocorona formation 11,75,76 and heteroaggregation of cells with NPLs. 77 When PS-NPLs were added, they interacted with the negative charges on the surface of P. malhamensis and NOM to generate heteroaggregates, which could not only make P. malhamensis a part of these heteroaggregates but also allow them to accumulate and adhere to the surfaces of these heteroaggregates (Fig. S1 †).…”

Section: †)mentioning

confidence: 99%

Transformations, interactions, and acute biological responses of nanoplastics on mixotrophic microalgae Poterioochromonas malhamensis

Meng¹,

Stoll²,

Liu³

2023

Environ. Sci.: Nano

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“…FCM can also provide intel on (sometimes unexpected) aggregation and settling rates during exposure periods. Exposure of marine phytoplankton to micro(nano)plastics of PS ( ∼50 nm and ∼2 μm) resulted in cell decline driven by hetero-aggregation and cosedimentation of cells with plastic particles [50] . However, using FCM requires expert operators for instrument set-up and data analysis, and micro(nano)plastics must be in an aqueous solution.…”

Section: -500 μM (Concentrations Below 200 Ppt)mentioning

confidence: 99%

Analytical methodologies used for screening micro(nano)plastics in (eco)toxicity tests

Silva

Duarte

et al. 2022

Green Analytical Chemistry

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Cell size matters: Nano- and micro-plastics preferentially drive declines of large marine phytoplankton due to co-aggregation

Cited by 28 publications

References 104 publications

Gross Negligence: Impacts of Microplastics and Plastic Leachates on Phytoplankton Community and Ecosystem Dynamics

Gross Negligence: Impacts of Microplastics and Plastic Leachates on Phytoplankton Community and Ecosystem Dynamics

Transformations, interactions, and acute biological responses of nanoplastics on mixotrophic microalgae Poterioochromonas malhamensis

Analytical methodologies used for screening micro(nano)plastics in (eco)toxicity tests

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