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https://locus.ufv.br//handle/123456789/12911
Tipo: | Artigo |
Título: | Leaf morphoanatomy of species tolerant to excess iron and evaluation of their phytoextraction potential |
Autor(es): | Santana, Brenda Vila Nova Araújo, Talita Oliveira de Andrade, Guilherme Carvalho Freitas-Silva, Larisse de Kuki, Kacilda Naomi Pereira, Eduardo Gusmão Azevedo, Aristéa Alves Silva, Luzimar Campos da |
Abstract: | Setaria parviflora (Poir.) Kerguélen and Paspalum urvillei Steudel are grasses that grow naturally in a soil with high iron contents. This study aimed to characterize morphoanatomically and histochemically the iron phytotoxicity on leaves and evaluate the phytoextraction potential of these grasses. Saplings were cultivated in hydroponic solution with and without excess Fe-EDTA. Regarding measurements taken on leaves, reduction was observed among treatments of Fe-EDTA on height values of abaxial epidermis and bundle sheath in both species. As for iron histolocalization, stronger reaction was observed in leaves of S. parviflora, in comparison with P. urvillei. Anatomical damage, such as protoplast retraction, irregular xylem, changes in cell volume, and cell collapse, and visual symptoms, like leaf bronzing, chlorosis, and necrosis, were similar in both species when exposed to excess iron; however, P. urvillei showed more severe damage. This species accumulated more iron in shoots than S. parviflora and therefore is more favorable for use in phytoextraction. The root system of both species accumulated higher iron concentrations in relation to shoots. |
Palavras-chave: | Histochemistry Leaf micromorphometry Paspalum urvillei Phytoremediation Poaceae Setaria parviflora |
Editor: | Environmental Science and Pollution Research |
Tipo de Acesso: | Open Access |
URI: | http://dx.doi.org/10.1007/s11356-013-2160-5 http://www.locus.ufv.br/handle/123456789/12911 |
Data do documento: | 3-Set-2013 |
Aparece nas coleções: | Artigos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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10.1007-s11356-013-2160-5.pdf | texto completo | 1,11 MB | Adobe PDF | Visualizar/Abrir |
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