| Literature DB >> 21598769 |
Olena P Zhivotovsky1, Julia A Kuzovkina, Cristian P Schulthess, Tom Morris, Dawn Pettinelli, Miaomiao Ge.
Abstract
Lead tolerance and accumulation in five willow clones were investigated using a nutrient film technique. Plants were exposed to 0, 48, 121, 169, or 241 microM Pb for 14 days. Tolerance indices (TI) and critical toxicity thresholds (EC50) were determined for five willow clones. SX61 had the highest TI values (92%) in the 48 and 121 microM Pb treatments, as well as the highest EC50 threshold values (70.5 microM for roots, 155.9 microM for aboveground tissue), indications of a high degree of tolerance to Pb. This clone also developed the highest biomass of all the clones tested. We found significant variation in willows' lead accumulation. The highest Pb content in roots (24 mg plant(-1)) and aboveground tissue (7.6 mg plant(-1)) was recorded in the 48 microM Pb treatment in SX61. Based on high biomass, TI, ECso, and Pb content in plant tissues, SX61 holds promise for phytoextraction of lead.Entities:
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Year: 2011 PMID： 21598769 DOI： 10.1080/15226511003671361
Source DB: PubMed Journal: Int J Phytoremediation ISSN： 1522-6514 Impact factor: 3.212