Sara Pignattelli (Author), Andrea Broccoli (Author), Manuela Piccardo (Author), Antonio Terlizzi (Author), Monia Renzi (Author)

Abstract

This study evaluated the chronic toxicity (30 days) of different sizes of polyethylene terephthalate (PET) microplastics (60e3000 mm) provided alone or in combination with acid rain, on garden cress (Lepidium sativum). Both biometrical and physiological traits have been evaluated: i) percentage inhibition of seed germination, plant height, leaf number and fresh biomass production; ii) oxidative stress responses (hydrogen peroxide; ascorbic acid and glutathione production); iii) impairment in photosynthetic machinery in term of pigments production; iv) aminolevulinic acid and proline production. Results highlighted that different sizes of PET, alone or in combination with acid rain, are able to negatively affect both biometrical and physiological plant traits. In particular, the lower size of microplastics is able to negatively affect growth and development, as well as to trigger the oxidative burst. Regarding the pigments production, PET coupled with acid rain, induced a higher production of Chl-b, and an inhibition of aminolevulinic acid.

Keywords

polyethylene terephthalate;acid rain;lepidium sativum;oxidative burst;germinability;chlorophylls;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UNG - University of Nova Gorica
UDC: 504
COBISS: 58234371 Link will open in a new window
ISSN: 0269-7491
Views: 1313
Downloads: 0
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Other data

URN: URN:SI:UNG
Pages: str. 1-9
Issue: ǂVol. ǂ282
Chronology: 2021
DOI: 10.1016/j.envpol.2021.116997
ID: 12721862