The present study evaluated the phytoremediation potential of the floating macrophyte Ludwigia stolonifera for removing trace metals from contaminated water bodies. Forty quadrats, distributed equally in eight sites (six polluted two unpolluted sites) were selected seasonally for water, sediment and plant investigations. The leaf area, fresh and dry biomass, chlorophyll b and carotenoids contents of L. stolonifera were significantly reduced in polluted sites. L. stolonifera plants accumulated concentrations of the investigated trace metals in their roots higher than the shoots. The roots contributed to the highest concentrations of Al and Cu during spring; Fe, Mn and Ni during summer; Cd and Zn during autumn; and Cr and Pb during winter. Compared to the unpolluted sites, the below- and above-ground parts from the polluted sites accumulated higher concentrations of most investigated trace metals, except Fe. The below-ground parts of L. stolonifera had high seasonal potential for seasonal accumulation of Cd, Cu, Ni, Zn and Pb with a bioaccumulation factor that exceeded 1, the translocation factor of the investigated metals was <1. Therefore, the study species is suitable for metals phytostabilization and thus can be considered a potential phytoremediator of these metals.

中文翻译：

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植物稳定化作为漂浮的大型植物Ludwigia stolonifera（Guill。＆Perr。）PH Raven减轻水污染物的一种植物修复策略。

本研究评估了浮游植物Ludwigia stolonifera去除污染水体中痕量金属的植物修复潜力。季节性选择40个四方类，平均分布在八个地点（六个被污染的两个未污染的地点）中进行水，沉积物和植物的调查。在受污染的地区，豆L. stolonifera的叶面积，新鲜和干燥生物量，叶绿素b和类胡萝卜素含量均明显降低。stolonifera植物在其根中积累的被调查微量金属的浓度高于芽。在春季，根系使铝和铜的浓度最高。夏季的铁，锰和镍；秋季的镉和锌；冬季的铬和铅。与未受污染的地点相比，除铁以外，受污染地点的地下部分和地下部分积累了较高浓度的大多数调查痕量金属。stolonifera的地下部分具有高的季节性潜力，其Cd，Cu，Ni，Zn和Pb的季节性积累具有超过1的生物积累因子，所研究金属的转运因子<1。因此，该研究物种适合于金属的植物稳定化，因此可以认为是这些金属的潜在植物修复剂。