Artículo
Phytochelatins and monothiols in salt marsh plants and their relation with metal tolerance
Fecha de publicación:
05/2017
Editorial:
Pergamon-Elsevier Science Ltd
Revista:
Marine Pollution Bulletin
ISSN:
0025-326X
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Phytochelatins (PCs) and monothiols and their relation with trace element concentrations were studied in three plant species from two Portuguese salt marshes. Belowground tissues showed always higher element concentrations, while enhanced values of monothiols were found in aboveground biomass. Glutathione was usually the most abundant monothiol. The concentration of total PCs was higher in leaves or stems than in roots of Halimione portulacoides and Sarcocornia perennis, while in Spartina maritima the highest concentrations were reported in large roots. PC2 was synthesized by all tissues and species and was higher in large roots of S. maritima. PC4 and PC5 were in high levels in small roots of S. maritima. PC2 was positively correlated with As, Zn and Pb. Although being the first evidence of PCs and monothiols in these species under natural conditions, our results do not point to a simple relationship with elements concentrations, suggesting a complex mechanism involved.
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Articulos(IADO)
Articulos de INST.ARG.DE OCEANOGRAFIA (I)
Articulos de INST.ARG.DE OCEANOGRAFIA (I)
Citación
Negrin, Vanesa Lorena; Teixeira, Bárbara; Godinho, Rita M.; Mendes, Rogério; Vale, Carlos; Phytochelatins and monothiols in salt marsh plants and their relation with metal tolerance; Pergamon-Elsevier Science Ltd; Marine Pollution Bulletin; 121; 1-2; 5-2017; 78-84
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