Int J Phytoremediation. 2014;16(7-12):1148-69. doi: 10.1080/15226514.2013.821448.
High biomass producing species are considered as tools for remediation of contaminated soils. Willows (Salix spp.) are prominent study subjects in this regard. In this study, different willow clones (Salix fragilis x alba) were planted on heavy-metal polluted dredging sludge. A first objective was assessment of the biomass production for these clones. Using a Gupta statistic, four clones were identified as high biomass producers (HBP). For comparison, a group of four clones with lowest biomass production were selected (LBP). A second objective was to compare metal uptake as well as the physiological and proteomic responses of these two groups. All these complementary data's allow us to have a better picture of the health of the clones that would be used in phytoremediation programs. Cd, Zn, and Ni total uptake was higher in the HBPs but Pb total uptake was higher in LBPs. Our proteomic and physiological results showed that the LBPs were able to maintain cellular activity as much as the HBPs although the oxidative stress response was more pronounced in the LBPs. This could be due to the high Pb content found in this group although a combined effect of the other metals cannot be excluded.
高生物质生产物种被认为是修复污染土壤的工具。柳树（Salix spp.）是这方面的重要研究对象。在这项研究中，不同的柳树无性系（Salix fragilis x alba）被种植在重金属污染的疏浚淤泥上。第一个目标是评估这些无性系的生物量生产。使用古普塔统计，确定了四个无性系为高生物质生产者（HBP）。为了比较，选择了四个生物量最低的无性系作为对照组（LBP）。第二个目标是比较这两组的金属吸收以及生理和蛋白质组学反应。所有这些补充数据使我们能够更好地了解用于植物修复计划的无性系的健康状况。HBPs 中 Cd、Zn 和 Ni 的总吸收量较高，但 LBPs 中 Pb 的总吸收量较高。我们的蛋白质组学和生理学结果表明，尽管 LBPs 的氧化应激反应更为明显，但它们能够像 HBPs 一样维持细胞活性。这可能是由于该组中发现的 Pb 含量较高，但不能排除其他金属的综合影响。
