Not so dangerous? PET microplastics toxicity on freshwater microalgae and cyanobacteria

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F23%3A43923361" target="_blank" >RIV/62156489:43210/23:43923361 - isvavai.cz</a>

Alternative codes found

RIV/61389030:_____/23:00575368

Result on the web

<a href="https://doi.org/10.1016/j.envpol.2023.121628" target="_blank" >https://doi.org/10.1016/j.envpol.2023.121628</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.envpol.2023.121628" target="_blank" >10.1016/j.envpol.2023.121628</a>

Result language

angličtina

Original language name

Not so dangerous? PET microplastics toxicity on freshwater microalgae and cyanobacteria

Original language description

Microalgae and cyanobacteria are among the most important primary producers and are responsible for the production of 50-80% of the oxygen on Earth. They can be significantly affected by plastic pollution, as the vast majority of plastic waste ends up in rivers and then the oceans. This research focuses on green microalgae Chlorella vulgaris (C. vulgaris), Chlamydomonas reinhardtii (C. reinhardtii), filamentous cyanobacterium Limnospira (Arthrospira) maxima (L.(A.) maxima) and how they are affected by environmentally relevant PET-MPs (polyethylene-terephtalate microplastics). Manufactured PET-MPs have asymmetric shape, size between 3 and 7 μm and were used in concentrations ranging from 5 mg/L to 80 mg/L. The highest inhibitory rate of growth was found in C. reinhardtii (MINUS SIGN 24%). Concentration-dependent changes in chlorophyll a composition were found in C. vulgaris and C. reinhardtii, not in L. (A.) maxima. Furthermore, cell damage was detected in all three organisms by CRYO-SEM (shriveling, cell wall disruption), but the cyanobacterium was the least damaged. A PET-fingerprint was detected on the surface of all tested organisms using FTIR, indicating the adherence of PET-MPs. The highest rate of PET-MPs adsorption was detected in L. (A.) maxima. Specifically, characteristic spectra were observed at TILDE OPERATOR+D91721, 850, 1100, 1275, 1342, and 1715 cmMINUS SIGN 1 which are specific for functional groups of PET-MPs. Nitrogen and carbon content significantly increased in L. (A.) maxima under exposure to 80 mg/L due to the PET-MPs adherence and mechanical stress. In all three tested organisms, weak exposure-related ROS generation was detected. In general, cyanobacteria seem to be more resistant to the effects of MPs. However, organisms in the aquatic environment are exposed to MPs over a longer time scale, so it is important to use the present findings for further longer-term experiments on environmentally relevant organisms.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10511 - Environmental sciences (social aspects to be 5.7)

Project

<a href="/en/project/EF19_073%2F0016670" target="_blank" >EF19_073/0016670: Internal grants of Mendel University in Brno</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Environmental Pollution

ISSN

0269-7491

e-ISSN

1873-6424

Volume of the periodical

329

Issue of the periodical within the volume

15 July

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

121628

UT code for WoS article

000998658700001

EID of the result in the Scopus database

2-s2.0-85154020960