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https://locus.ufv.br//handle/123456789/19947
Tipo: | Artigo |
Título: | Iron plaque formation and morphoanatomy of roots from species of restinga subjected to excess iron |
Autor(es): | Siqueira-Silva, Advanio Inácio Silva, Luzimar Campos da Azevedo, Aristéa Alves Oliva, Marco Antonio |
Abstract: | The restingas, a sandy coastal plain ecosystem of Brazil, have received an additional amount of iron due to the activity of mining industries. The present study aims to characterize morphoanatomically and histochemically the iron plaque formation on roots of Ipomoea pes-caprae L. and Canavalia rosea DC, cultivated in hydroponic solution with and without excess iron. The iron plaque formation as well as changes in the external morphology of the lateral roots of both species were observed after the subjection to excess iron. Changes in the nutrient uptake, and in the organization and form of the pericycle and cortex cells were observed for both species. Scanning electron microscopy showed evident iron plaques on the whole surface of the root. The iron was histolocalized in all root tissues of both species. The species of restinga studied here formed iron plaque in their roots when exposed to excess of this element, which may compromise their development in environments polluted by particulated iron. |
Palavras-chave: | Iron plaque Ipomoea pes-caprae Canavalia rosea Hydroponic culture Sandy coastal plain |
Editor: | Ecotoxicology and Environmental Safety |
Tipo de Acesso: | Elsevier Inc |
URI: | https://doi.org/10.1016/j.ecoenv.2011.11.030 http://www.locus.ufv.br/handle/123456789/19947 |
Data do documento: | 9-Dez-2011 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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artigo.pdf Until 2100-12-31 | Texto completo | 2,5 MB | Adobe PDF | Visualizar/Abrir ACESSO RESTRITO |
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