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Publication Type J
Authors Manousaki, E., K. Galanaki, L. Papadimitriou and N. Kalogerakis
Title METAL PHYTOREMEDIATION BY THE HALOPHYTE LIMONIASTRUM MONOPETALUM (L.) BOISS: TWO CONTRASTING ECOTYPES
Source International Journal of Phytoremediation
Author Keywords phytoextraction phytoexcretion cadmium lead salinity halophyte Limoniastrum monopetalum HYPERACCUMULATOR THLASPI-CAERULESCENS SEDUM-ALFREDII HANCE HEAVY-METALS CONTAMINATED SOILS CD ACCUMULATION SALT STRESS CADMIUM PLANTS LEAD PHYTOEXTRACTION Environmental Sciences
Abstract The phytoremediation potential of the halophyte Limoniastrum monopetalum for the removal of Cd and Pb from polluted sites is assessed in this work. Two pot experiments were conducted; the first with wild L. monopetalum grown on soil polluted with Cd and Pb irrigated at different salinities, and the second with commonly cultivated ornamental L. monopetalum grown on soil polluted with Cd irrigated also at different salinities. The data revealed that wild L. monopetalum is a Cd and Pb tolerant plant able to accumulate at least 100ppm of cadmium in its shoots without showing any significant decrease in terms of biomass production, chlorophyll content or water content suggesting that it could be an accumulator of Cd. Pb above-ground accumulation was kept at low levels with the majority of Pb localized in the roots. On the other hand, contrasting results were obtained for ornamental L. monopetalum which although it was found to be also Cd tolerant, Cd accumulation in its tissues was kept at significantly lower levels especially compared to that of the wild ecotype. In addition for ornamental L. monopetalum salinity did not have a positive effect on Cd accumulation and translocation as observed in the wild type and in other halophytes. Analysis of the salt excretion crystals on the leaf surface confirmed that wild and cultivated ornamental L. monopetalum excrete cadmium and lead through their salt glands as a possible metal detoxification mechanism, although the amount excreted by the ornamental L. monopetalum is significantly less.
Author Address [Manousaki, Eleni; Galanaki, Kosmoula; Papadimitriou, Lamprini; Kalogerakis, Nicolas] Tech Univ Crete Polytechneioupolis, Sch Environm Engn, Khania 73100, Greece. Kalogerakis, N (reprint author), Tech Univ Crete Polytechneioupolis, Sch Environm Engn, Khania 73100, Greece. nicolas.kalogerakis@enveng.tuc.gr
ISSN 1522-6514
ISBN 1522-6514
29-Character Source Abbreviation Int. J. Phytoremediat.
Publication Date Aug
Year Published 2014
Volume 16
Issue 7-8
Beginning Page 755-769
Digital Object Identifier (DOI) 10.1080/15226514.2013.856847
Unique Article Identifier WOS:000329510200006
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