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

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Dedman, Craig J., Christie-Oleza, Joseph Alexander, Fernández-Juárez, Víctor and Echeveste, Pedro (2022) Cell size matters : nano- and micro-plastics preferentially drive declines of large marine phytoplankton due to co-aggregation. Journal of Hazardous Materials, 424 (Part B). 127488. doi:10.1016/j.jhazmat.2021.127488 ISSN 0304-3894.

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Official URL: https://doi.org/10.1016/j.jhazmat.2021.127488

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Abstract

Marine plastic pollution represents a key environmental concern. Whilst ecotoxicological data for plastic is increasingly available, its impact upon marine phytoplankton remains unclear. Owing to their predicted abundance in the marine environment and likely interactions with phytoplankton, here we focus on the smaller fraction of plastic particles (~50 nm and ~2 µm polystyrene spheres). Exposure of natural phytoplankton communities and laboratory cultures revealed that plastic exposure does not follow traditional trends in ecotoxicological research, since large phytoplankton appear particularly susceptible towards plastics exposure despite their lower surface-to-volume ratios. Cell declines appear driven by hetero-aggregation and co-sedimentation of cells with plastic particles, recorded visually and demonstrated using confocal microscopy. As a consequence, plastic exposure also caused disruption to photosynthetic functioning, as determined by both photosynthetic efficiency and high throughput proteomics. Negative effects upon phytoplankton are recorded at concentrations orders of magnitude above those estimated in the environment. Hence, it is likely that impacts of NPs and MPs are exacerbated at the high concentrations typically used in ecotoxicological research (i.e., mg L-1).

Item Type: Journal Article
Subjects: Q Science > QH Natural history
Q Science > QK Botany
T Technology > TD Environmental technology. Sanitary engineering
Divisions: Faculty of Science, Engineering and Medicine > Science > Life Sciences (2010- )
SWORD Depositor: Library Publications Router
Library of Congress Subject Headings (LCSH): Marine phytoplankton, Microplastics -- Environmental aspects, Environmental toxicology
Journal or Publication Title: Journal of Hazardous Materials
Publisher: Elsevier
ISSN: 0304-3894
Official Date: 15 February 2022
Dates:
DateEvent
15 February 2022Published
19 October 2021Available
8 October 2021Accepted
Volume: 424
Number: Part B
Article Number: 127488
DOI: 10.1016/j.jhazmat.2021.127488
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access (Creative Commons)
Date of first compliant deposit: 24 August 2022
Date of first compliant Open Access: 24 August 2022
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
RLTG9–357288064Newton Fundhttp://dx.doi.org/10.13039/100010897
NE/L002493/1[NERC] Natural Environment Research Councilhttp://dx.doi.org/10.13039/501100000270
NE/K009044/1[NERC] Natural Environment Research Councilhttp://dx.doi.org/10.13039/501100000270
RYC-2017–22452Ministerio de Ciencia, Innovación y Universidadeshttp://dx.doi.org/10.13039/100014440
RYC-2017–22452[ANR] Agence Nationale de la Recherchehttp://dx.doi.org/10.13039/501100001665
RYC-2017–22452European Social Fundhttp://dx.doi.org/10.13039/501100004895
PID2019–109509RB-I00Ministerio de Ciencia, Innovación y Universidadeshttp://dx.doi.org/10.13039/100014440
11170837[FONDECYT] Fondo Nacional de Desarrollo Científico y Tecnológicohttp://dx.doi.org/10.13039/501100002850
REDI170403[FONDECYT] Fondo Nacional de Desarrollo Científico y Tecnológicohttp://dx.doi.org/10.13039/501100002850
INACH-RT-12-19[FONDECYT] Fondo Nacional de Desarrollo Científico y Tecnológicohttp://dx.doi.org/10.13039/501100002850
BB/M017982/1[BBSRC] Biotechnology and Biological Sciences Research Councilhttp://dx.doi.org/10.13039/501100000268
BB/M017982/1[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
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