Bioaccumulation and effects of lanthanum on growth and mitotic index in soybean plants

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorOliveira, Cynthia de-
Autor(es): dc.creatorRamos, Sílvio Júnio-
Autor(es): dc.creatorSiqueira, José Oswaldo-
Autor(es): dc.creatorFaquin, Valdemar-
Autor(es): dc.creatorCastro, Evaristo Mauro de-
Autor(es): dc.creatorTechio, Vânia Helena-
Autor(es): dc.creatorCoelho, Livia Cristina-
Autor(es): dc.creatorSilva, Pedro H. P. e-
Autor(es): dc.creatorSchnug, Ewald-
Autor(es): dc.creatorGuilherme, Luiz Roberto Guimarães-
Data de aceite: dc.date.accessioned2026-02-09T11:50:07Z-
Data de disponibilização: dc.date.available2026-02-09T11:50:07Z-
Data de envio: dc.date.issued2018-02-20-
Data de envio: dc.date.issued2018-02-20-
Data de envio: dc.date.issued2015-12-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/28585-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/pii/S0147651315300245#!-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1148489-
Descrição: dc.descriptionRare earth elements such as lanthanum (La) have been used as agricultural inputs in some countries in order to enhance yield and improve crop quality. However, little is known about the effect of La on the growth and structure of soybean, which is an important food and feed crop worldwide. In this study, bioaccumulation of La and its effects on the growth and mitotic index of soybean was evaluated. Soybean plants were exposed to increasing concentrations of La (0, 5, 10, 20, 40, 80, and 160 µM) in nutrient solution for 28 days. Plant response to La was evaluated in terms of plant growth, nutritional characteristics, photosynthetic rate, chlorophyll content, mitotic index, modifications in the ultrastructure of roots and leaves, and La mapping in root and shoot tissues. The results showed that the roots of soybean plants can accumulate sixty-fold more La than shoots. La deposition occurred mainly in cell walls and in crystals dispersed in the root cortex and in the mesophyll. When La was applied, it resulted in increased contents of some essential nutrients (i.e., Ca, P, K, and Mn), while Cu and Fe levels decreased. Moreover, low La concentrations stimulated the photosynthetic rate and total chlorophyll content and lead to a higher incidence of binucleate cells, resulting in a slight increase in roots and shoot biomass. At higher La levels, soybean growth was reduced. This was caused by ultrastructural modifications in the cell wall, thylakoids and chloroplasts, and the appearance of c-metaphases.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceEcotoxicology and Environmental Safety-
Palavras-chave: dc.subjectSoybean - Effect of lanthanum-
Palavras-chave: dc.subjectRare earth elements - Bioaccumulation-
Palavras-chave: dc.subjectSoja - Efeito do lantânio-
Palavras-chave: dc.subjectElementos terras raras - Bioacumulação-
Título: dc.titleBioaccumulation and effects of lanthanum on growth and mitotic index in soybean plants-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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