The Zn biogeochemistry of Armeria maritima (Mill.) Willd.: Within and between population studies

Citation
C. Bernard et C. Lefebvre, The Zn biogeochemistry of Armeria maritima (Mill.) Willd.: Within and between population studies, BELG J BOT, 134(1), 2001, pp. 21-28
Citations number
22
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Plant Sciences
Journal title
BELGIAN JOURNAL OF BOTANY
ISSN journal
0778-4031 → ACNP
Volume
134
Issue
1
Year of publication
2001
Pages
21 - 28
Database
ISI
SICI code
0778-4031(2001)134:1<21:TZBOAM>2.0.ZU;2-R
Abstract
A wide range of variation of Zn concentrations in leaves occurs between ind ividuals within an Armeria maritima population growing on Zn-rich spoil hea ps from an old Zn-Pb mine. Experiments on controlled soil conditions with a metallicolous A. maritima population show that there is a family (genotypi cal) component for Zn leaf concentrations. Specific Plumbaginaceae-excretin g glands regulate to some extent the Zn concentrations in capitulum stalks and probably leaves. Under greenhouse culture conditions, a non-tolerant co astal population can grow reasonably well for several months on an highly t oxic soil, accumulating two to four times more Zn in leaves and performing better in Zn accumulation per individual than mine populations. Additional examples from populations of Thlaspi caerulescens suggest the general assum ption that search for genotypes efficient for phytoremediations must not be restricted to metallophyte populations.