Data/hora: 05/06/2024 11:38:43

Provedor de dados: | 61
País: | Brazil
Título: | Cadmium toxicity in plants
Autores: | Benavides,María P.; Gallego,Susana M.; Tomaro,María L.
Data: | 2005-03-01
Ano: | 2005
Palavras-chave: | Cadmium; Heavy metals; Metal toxicity; Phytochelatins; Oxidative stress.
Resumo: | Heavy metals are important environmental pollutants and their toxicity is a problem of increasing significance for ecological, evolutionary, nutritional, and environmental reasons. Plants posses homeostatic cellular mechanisms to regulate the concentration of metal ions inside the cell to minimize the potential damage that could result from the exposure to nonessential metal ions. This paper summarizes present knowledge in the field of higher plant responses to cadmium, an important environmental pollutant. Knowledge concerning metal toxicity, including mechanisms of cadmium homeostasis, uptake, transport and accumulation are evaluated. The role of the cell wall, the plasma membrane and the mycorrhizas, as the main barriers against cadmium entrance to the cell, as well as some aspects related to phytochelatin-based sequestration and compartmentalization processes are also reviewed. Cadmium-induced oxidative stress was also considered as one of the most studied topics of cadmium toxicity.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202005000100003
Editor: | Brazilian Journal of Plant Physiology
Relação: | 10.1590/S1677-04202005000100003
Formato: | text/html
Fonte: | Brazilian Journal of Plant Physiology  v.17 n.1 2005
Fonte: | info:eu-repo/semantics/openAccess