Environ Sci Pollut Res Int. 2014 Mar;21(5):3294-303. doi: 10.1007/s11356-013-2307-4.
The extensive use of copper-bearing fungicides in vineyards is responsible for the accumulation of copper (Cu) in soils. Grass species able to accumulate Cu could be cultivated in the vineyard inter-rows for copper phytoextraction. In this study, the capacity of Festuca rubra cv Merlin and Sinapis alba to tolerate and accumulate copper (Cu) was first investigated in a hydroponic system without the interference of soil chemical-physical properties. After the amendment of Cu (5 or 10 mg Cu l-(1)) to nutrient solution, shoot Cu concentration in F. rubra increased up to 108.63 mg Cu kg(-1) DW, more than three times higher than in S. alba (31.56 mg Cu kg(-1) DW). The relationship between Cu concentration in plants and external Cu was dose-dependent and species specific. Results obtained from the hydroponic experiment were confirmed by growing plants in pots containing soil collected from six Italian vineyards. The content of soil organic matter was crucial to enhance Cu tolerance and accumulation in the shoot tissues of both plant species. Although S. alba produced more biomass than F. rubra in most soils, F. rubra accumulated significantly more Cu (up to threefold to fourfold) in the shoots. Given these results, we recommended that F. rubra cv Merlin could be cultivated in the vineyard rows to reduce excess Cu in vineyard soils.
铜杀菌剂在葡萄园的广泛使用导致了土壤中铜（Cu）的积累。能够积累铜的草种可以种植在葡萄园行间进行铜的植物提取。在这项研究中，首先在没有土壤化学-物理性质干扰的水培系统中研究了 Merlin 型红羊茅和白芥对铜（Cu）的耐受性和积累能力。在向营养液中添加 Cu（5 或 10 mg Cu l-1）后，红羊茅地上部 Cu 浓度增加到 108.63 mg Cu kg-1 DW，比白芥（31.56 mg Cu kg-1 DW）高 3 倍以上。植物体内 Cu 浓度与外部 Cu 之间的关系是剂量依赖性和物种特异性的。水培实验的结果通过在含有从意大利六个葡萄园采集的土壤的盆中种植植物得到了证实。土壤有机质含量对提高两种植物地上部对 Cu 的耐受性和积累能力至关重要。尽管白芥在大多数土壤中的生物量比红羊茅多，但红羊茅在地上部积累的 Cu 量显著增加（增加了 3 到 4 倍）。鉴于这些结果，我们建议在葡萄园行间种植 Merlin 型红羊茅，以减少葡萄园土壤中过量的 Cu。
