Succulent species differ substantially in their tolerance and phytoextraction potential when grown in the presence of Cd, Cr, Cu, Mn, Ni, Pb, and Zn

Plants for the phytoextraction of heavy metals should have the ability to accumulate high concentrations of such metals and exhibit multiple tolerance traits to cope with adverse conditions such as coexistence of multiple heavy metals, high salinity, and drought which are the characteristics of many...

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Bibliographic Details
Published in:Environmental science and pollution research international 2015-12, Vol.22 (23), p.18824-18838
Main Authors: Zhang, Chengjun, Sale, Peter W. G, Clark, Gary J, Liu, Wuxing, Doronila, Augustine I, Kolev, Spas D, Tang, Caixian
Format: Article
Language:English
Subjects:
Aizoaceae - metabolism
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Australia
Biomass
Bioremediation
Cadmium
Carpobrotus
chromium
copper
Crassula
Drought
Earth and Environmental Science
Ecotoxicology
Environment
Environmental Chemistry
Environmental Health
Environmental Restoration and Remediation
Experiments
Flowers & plants
Growth rate
halophytes
Heavy metal content
Heavy metals
Indigenous species
Landfill
Lead
Loam soils
manganese
Metal concentrations
metal tolerance
Metals
Metals, Heavy - metabolism
nickel
phytoremediation
polluted soils
Research Article
Salinity
Sedum
Soil contamination
Soil Pollutants - metabolism
Soil sciences
Studies
Waste Water Technology
Water Management
Water Pollution Control
Wetlands
Zinc
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Summary:Plants for the phytoextraction of heavy metals should have the ability to accumulate high concentrations of such metals and exhibit multiple tolerance traits to cope with adverse conditions such as coexistence of multiple heavy metals, high salinity, and drought which are the characteristics of many contaminated soils. This study compared 14 succulent species for their phytoextraction potential of Cd, Cr, Cu, Mn, Ni, Pb, and Zn. There were species variations in metal tolerance and accumulation. Among the 14 succulent species, an Australian native halophyte Carpobrotus rossii exhibited the highest relative growth rate (20.6–26.6 mg plant⁻¹ day⁻¹) and highest tolerance index (78–93 %), whilst Sedum “Autumn Joy” had the lowest relative growth rate (8.3–13.6 mg plant⁻¹ day⁻¹), and Crassula multicava showed the lowest tolerance indices (
ISSN:0944-1344
1614-7499
DOI:10.1007/s11356-015-5046-x