Succulent species differ substantially in their tolerance and phytoextraction potential when grown in the presence of Cd, Cr, Cu, Mn, Ni, Pb, and Zn
Chengjun Zhang, Peter WG Sale, Gary J Clark, Wuxing Liu, Augustine I Doronila, Spas D Kolev, Caixian Tang
Environmental Science and Pollution Research | SPRINGER HEIDELBERG | Published : 2015
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%), whil..View full abstract
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Awarded by Australian Research Council Linkage Grant
We thank the Royal Botanic Gardens Victoria for supplying Sedum species, Dr. Trevor Edwards for the identification of plant species, and Mr. Rob Evans for assistance in the experiment. We also thank two anonymous reviewers for constructive comments. This research was supported by the Australian Research Council Linkage Grant LP100100800.