Cadmium hyperaccumulation and reproductive traits in natural Thlaspi caerulescens populations.

Détails

ID Serval
serval:BIB_367BFDA340B1
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Cadmium hyperaccumulation and reproductive traits in natural Thlaspi caerulescens populations.
Périodique
Plant biology
Auteur(s)
Basic N., Keller C., Fontanillas P., Vittoz P., Besnard G., Galland N.
ISSN
1435-8603
Statut éditorial
Publié
Date de publication
01/2006
Peer-reviewed
Oui
Volume
8
Numéro
1
Pages
64-72
Langue
anglais
Notes
Publication types: Journal Article - Publication Status: ppublish
Résumé
During the last decade, the metal hyperaccumulating plants have attracted considerable attention because of their potential use in decontamination of heavy metal contaminated soils. However, in most species, little is known regarding the function, the ecological and the evolutionary significances of hyperaccumulation. In our study, we investigated the parameters influencing the Cd concentration in plants as well as the biological implications of Cd hyperaccumulation in nine natural populations of Thlaspi caerulescens. First, we showed that Cd concentration in the plant was positively correlated with plant Zn, Fe, and Cu concentrations. This suggested that the physiological and/or molecular mechanisms for uptake, transport and/or accumulation of these four heavy metals interact with each other. Second, we specified a measure of Cd hyperaccumulation capacity by populations and showed that T. caerulescens plants originating from populations with high Cd hyperaccumulation capacity had better growth, by developing more and bigger leaves, taller stems, and produced more fruits and heavier seeds. These results suggest a tolerance/disposal role of Cd hyperaccumulation in this species.
Mots-clé
Cadmium/metabolism, Metals, Heavy/metabolism, Plant Components, Aerial/growth, development, Reproduction, Soil, Thlaspi/growth, development, Thlaspi/metabolism
Pubmed
Web of science
Création de la notice
24/01/2008 17:16
Dernière modification de la notice
20/08/2019 13:24
Données d'usage