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Effects of La2O3 nanoparticles and bulk-La2O3 on the development of Pfaffia glomerata (Spreng.) Pedersen and respective nutrient element concentration

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Abstract

Nanoparticles (NPs) have been progressively applied in the last decades, which may impact the environment. Synthesis of pigments, growing, and nutrient element uptake by plants can also be affected by NPs. The influence of lanthanum oxide nanoparticles (La2O3 NPs) on growth, pigment synthesis, and nutrient element uptake by Pfaffia glomerata (Spreng.) Pedersen, a medicinal plant native in South America, was evaluated in the present study. P. glomerata plantlets were cultivated for 28 days in the absence (control) and presence of 100, 200, and 400 mg L−1 of La2O3 NPs or bulk-La2O3 (b-La2O3) at the same cultivation conditions. Root development, aerial part growth, and pigment concentration in plants were affected by b-La2O3 and La2O3 NPs, mainly by La2O3 NPs. In spite of alteration of nutrient element concentration observed for the 100 and 200 mg L−1 of La2O3 NPs or b-La2O3 treatments, Ca, Cu, Fe, K, La, Mg, Mn, Mo, P, S, and Zn determination in stems and leaves revealed drastically and similar decrease of these elements in plants cultivated in the presence of 400 mg L−1 of La2O3 NPs or b-La2O3. Element distribution (mapping) determined by using laser ablation inductively coupled plasma mass spectrometry in leaves of plants submitted to treatment with 400 mg L−1 of b-La2O3 or La2O3 NPs showed differences in the distribution of elements, indicating distinct effects of b-La2O3 and La2O3 NPs on P. glomerata. As such, this study demonstrated that La2O3 NPs may impact plant growth. However, more investigations are necessary for better understanding of the effect of La2O3 on plants, including a broader range of concentration.

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All data generated or analyzed during this study are included in this published article (and its supplementary information files).

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Acknowledgements

This work was supported by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq Proc. nr. 480929/2011-4 and 306052/2017-2).

Funding

This project was partially funded by Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq Proc. nr. 480929/2011–4 and 306052/2017–2).

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Vinicius Machado Neves was responsible for the analysis by LA-ICP-MS and text organization. Graciela Marini Heidrich was responsible for the analysis by ICP-MS. Camila Cavalheiro da Costa was responsible for the plant cultivation. Julia Gomes Farias was responsible for the plant cultivation. Fernando Teixeira Nicoloso was responsible for the plant cultivation and text revision. Dirce Pozebon was responsible for the text organization and revision. Valderi Luiz Dressler was responsible for supervising the data and text organization.

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Correspondence to Valderi Luiz Dressler.

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Highlights

• La2O3 affect growth, pigment synthesis, and nutrient elements in Pfaffia glomerata.

• Changes of nutrient distribution are observed in leaves of Pfaffia glomerata.

• The effect of lanthanum oxide on plants depends on lanthanum concentration and form (nanoparticles or bulk).

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Neves, V.M., Heidrich, G.M., da Costa, C.C. et al. Effects of La2O3 nanoparticles and bulk-La2O3 on the development of Pfaffia glomerata (Spreng.) Pedersen and respective nutrient element concentration. Environ Sci Pollut Res 29, 60084–60097 (2022). https://doi.org/10.1007/s11356-022-20117-0

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  • DOI: https://doi.org/10.1007/s11356-022-20117-0

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