ICAR-Indian Institute of Soil Science, NabiBagh, Berasia Road, Bhopal, 462038, India.
Environ Sci Pollut Res Int. 2021 Mar;28(11):14177-14181. doi: 10.1007/s11356-021-12534-4. Epub 2021 Jan 25.
In the present study, we evaluated Furcraea foetida for the phytoremediation of cadmium (Cd)-contaminated soils. We selected F. foetida because it is a drought-resistant plant, produces high biomass, and needs minimum maintenance. It belongs to the leaf fiber group of plants and therefore has economic importance. Since it is a non-edible crop, there is no danger of food chain contamination. Despite possessing these ideal characteristics, surprisingly, to date, the plant is underutilized for phytoremediation purposes. Therefore, to evaluate the phytoremediation potential of the plant, we exposed it to five levels of cadmium (0, 25, 50, 100, and 200 mg Cd kg soil) and studied its influence on growth, dry matter production, uptake, and translocation efficiency. The plant showed good tolerance to Cd 200 mg kg soil without exhibiting any visible toxicity symptoms. The metal mainly accumulated in the roots (233 μg gdw), followed by leaf (51 μg g dw). The bioconcentration factor was > 1, but the translocation factor was < 1. The plant was not classified as a hyperaccumulator of Cd; however, because of its high uptake (897 μ g plant) and translocation efficiency (78%), we concluded that the plant could be utilized for phytoextraction of Cd from soils with low to moderately contaminated soils.
在本研究中，我们评估了福克拉菲亚（Furcraea foetida）对受镉（Cd）污染土壤的植物修复能力。我们选择福克拉菲亚是因为它是一种抗旱植物，生物量高，所需维护最少。它属于叶纤维植物群，因此具有经济重要性。由于它是一种非食用作物，不存在食物链污染的危险。尽管具有这些理想的特性，但令人惊讶的是，迄今为止，该植物在植物修复方面的利用还不充分。因此，为了评估该植物的植物修复潜力，我们将其暴露在 5 个镉水平（0、25、50、100 和 200 mg Cd kg 土壤）下，研究其对生长、干物质生产、吸收和转运效率的影响。该植物对 200 mg Cd kg 土壤表现出良好的耐受性，没有表现出任何可见的毒性症状。金属主要积累在根部（233 μg gdw），其次是叶片（51 μg g dw）。生物浓缩系数>1，但转运系数<1。该植物不属于 Cd 的超积累植物；然而，由于其高吸收（897 μ g plant）和转运效率（78%），我们得出结论，该植物可用于从低至中度污染土壤中提取 Cd。
