The impacts of nanoplastic toxicity on the accumulation, hormonal regulation and tolerance mechanisms in a potential hyperaccumulator - Lemna minor L.

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dc.contributor.authorArikan, Busra
dc.contributor.authorAlp, Fatma Nur
dc.contributor.authorOzfidan-Konakci, Ceyda
dc.contributor.authorYildiztugay, Evren
dc.contributor.authorTuran, Metin
dc.contributor.authorCavusoglu, Halit
dc.date.accessioned2024-02-23T14:12:50Z
dc.date.available2024-02-23T14:12:50Z
dc.date.issued2022
dc.departmentNEÜen_US
dc.description.abstractPlastic pollution, which is currently one of the most striking problems of our time, raises concerns about the dispersal of micro and nano-sized plastic particles in ecosystems and their toxic effects on living organisms. This study was designed to reveal the toxic effects of polystyrene nanoplastic (PS NP) exposure on the freshwater macrophyte Lemna minor. In addition, elucidating the interaction of this aquatic plant, which is used extensively in the phytoremediation of water contaminants and wastewater treatment facilities, with nanoplastics will guide the development of remediation techniques. For this purpose, we examined nanoplastic accumulation, oxidative stress markers, photosynthetic efficiency, antioxidant system activity and phytohormonal changes in L. minor leaves subjected to PS NP stress (P-1, 100 mg L-1; P-2, 200 mg L-1 PS NP). Our results showed no evidence of PS NP-induced oxidative damage in P-1 group plants, although PS NP accumulation reached 56 mu g g(-1) in the leaves. Also, no significant changes in chlorophyll a fluorescence parameters were observed in this group, indicating unaffected photosynthetic efficiency. PS NP exposure triggered the antioxidant system in L. minor plants and resulted in a 3- and 4.6-fold increase in superoxide dismutase (SOD) activity in the P-1 and P-2 groups. On the other hand, high-dose PS NP treatment resulted in insufficient antioxidant activity in the P-2 group and increased hydrogen peroxide (H2O2) and lipid peroxidation (TBARS contents) by 25 % and 17 % compared to the control plants. Furthermore, PS NP exposure triggered abscisic acid biosynthesis (two-fold in the P-1 and three-fold in the P-2 group), which is also involved in regulating the stress response. In conclusion, L. minor plants tolerated NP accumulation without growth suppression, oxidative stress damage and limitations in photosynthetic capacity and have the potential to be used in remediation studies of NP-contaminated waters.en_US
dc.identifier.doi10.1016/j.jhazmat.2022.129692
dc.identifier.issn0304-3894
dc.identifier.issn1873-3336
dc.identifier.pmid35963084en_US
dc.identifier.scopus2-s2.0-85135727681en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://doi.org/10.1016/j.jhazmat.2022.129692
dc.identifier.urihttps://hdl.handle.net/20.500.12452/12207
dc.identifier.volume440en_US
dc.identifier.wosWOS:000931930500002en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakPubMeden_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofJournal Of Hazardous Materialsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectPolystyrene Nanoplasticsen_US
dc.subjectPhytotoxicityen_US
dc.subjectAntioxidant Systemen_US
dc.subjectChlorophyll A Fluorescenceen_US
dc.subjectLemna Minoren_US
dc.titleThe impacts of nanoplastic toxicity on the accumulation, hormonal regulation and tolerance mechanisms in a potential hyperaccumulator - Lemna minor L.en_US
dc.typeArticleen_US

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