Mechanisms of copper tolerance by Armeria maritima in Dolfrwyong Bog, north Wales--initial studies.
Environ Geochem Health
; 25(1): 147-56, 2003 Mar.
Article
em En
| MEDLINE
| ID: mdl-12901090
ABSTRACT
Preliminary field studies were carried out at Dolfrwynog Bog in July 2000. Replicate samples of water, Armeria maritima plants and the soils adhering to its roots were collected and analysed for copper. Concentrations of up to 6486 mg kg-1 of copper in the soils were recorded. Accumulation of copper by the plant as expressed by concentration factors (CF) show that it is acting mainly as a copper excluder. Of the copper that is taken up, most of it is retained within the roots with very little being transported to the shoots of the plant. Moreover, a further possible mechanism of tolerance is exhibited by the excretion of copper through its decaying leaves. Towards the use of in vitro cultures to study the copper tolerance mechanisms in A. maritima a micropropagation protocol has been developed. The ex vitro plants have been rooted and established in compost.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Poluentes do Solo
/
Adaptação Fisiológica
/
Cobre
/
Plumbaginaceae
Idioma:
En
Revista:
Environ Geochem Health
Ano de publicação:
2003
Tipo de documento:
Article