Data/hora: 02/06/2024 19:08:04

Provedor de dados: | Brazilian Archives of Biology and Technology
País: | Brazil
Título: | Zinc detoxification by a cyanobacterium from a metal contaminated bay in Brazil
Autores: | Andrade,Luciana; Keim,Carolina N.; Farina,Marcos; Pfeiffer,Wolfgang C.
Data: | 2004-03-01
Ano: | 2004
Palavras-chave: | Heavy metals; Zinc; Sepetiba Bay; Polyphosphate granules; Glycogen granules; Detoxification.
Resumo: | We describe here the trapping of zinc in polyphosphate granules of the cyanobacterium Synechocystis aquatilis NPBS-3. Cells were cultured in 25 µM of zinc chloride and prepared for electron microscopy and energy-dispersive X-ray analysis. Some ultrastructural features were changed by zinc exposure, the increase of glycogen granules number being the main change. The polyphosphate granules contained phosphorus, sulphur, calcium, iron and zinc. The trapping of zinc in polyphosphate granules seemed to be an effective way of detoxifying the metal and surviving in the bay. As a non-specific mechanism, these polyphosphate granules could also be effective in trapping other metals in excess.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000100020
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89132004000100020
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.47 n.1 2004
Fonte: | info:eu-repo/semantics/openAccess