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Effect of cerium on growth and antioxidant metabolism of Lemna minor L.

TitleEffect of cerium on growth and antioxidant metabolism of Lemna minor L.
Publication TypeArticolo su Rivista peer-reviewed
Year of Publication2018
AuthorsZicari, M.A., d'Aquino Luigi, Paradiso A., Mastrolitti S., and Tommasi F.
JournalEcotoxicology and Environmental Safety
Volume163
Pagination536-543
ISSN01476513
KeywordsLemna, Lemna minor
Abstract

An increasing input rate of rare earth elements in the environment is expected because of the intense extraction of such elements form their ores to face human technological needs. In this study Lemna minor L. plants were grown under laboratory conditions and treated with increasing concentrations of cerium (Ce) ions to investigate the effects on plant growth and antioxidant systems. The growth increased in plants treated with lower Ce concentrations and reduced in plants treated with higher concentrations, compared to control plants. In plants treated with higher Ce concentrations lower levels of chlorophyll and carotenoid and the appearance of chlorotic symptoms were also detected. Increased levels of hydrogen peroxide, antioxidant metabolites and antioxidant activity confirmed that higher Ce concentrations are toxic to L. minor. Ce concentration in plant tissues was also determined and detectable levels were found only in plants grown on Ce-supplemented media. The use of duckweed plants as a tool for biomonitoring of Ce in freshwater is discussed. © 2018 Elsevier Inc.

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URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85050813417&doi=10.1016%2fj.ecoenv.2018.07.113&partnerID=40&md5=b12d91e6231439bd80fe9a980e585244
DOI10.1016/j.ecoenv.2018.07.113
Citation KeyZicari2018536