水培柳树（柳属）耐铅性和积累能力的筛选。
Hydroponic screening of willows (Salix L.) for lead tolerance and accumulation.
机构信息
Department of Plant Science, University of Connecticut, Storrs, CT 06269-4067, USA.
出版信息
Int J Phytoremediation. 2011 Jan;13(1):75-94. doi: 10.1080/15226511003671361.
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.
采用营养膜技术研究了 5 种柳树无性系对铅的耐受性和积累性。将植物暴露于 0、48、121、169 或 241μM 的 Pb 中 14 天。确定了 5 种柳树无性系的耐受力指数（TI）和临界毒性阈值（EC50）。SX61 在 48 和 121μM Pb 处理中具有最高的 TI 值（92%），以及最高的 EC50 阈值值（根部为 70.5μM，地上组织为 155.9μM），表明对 Pb 具有高度的耐受性。该无性系的生物量也是所有测试的无性系中最高的。我们发现柳树对铅的积累存在显著的差异。在 SX61 中，48μM Pb 处理下，根部（24mg 植物-1）和地上组织（7.6mg 植物-1）的 Pb 含量最高。基于高生物量、TI、EC50 和植物组织中的 Pb 含量，SX61 有望用于 Pb 的植物提取。
Zotero 插件