Martín Juan Francisco García, Caro María Del Carmen González, Barrera María Del Carmen López, García Miguel Torres, Barbin Douglas, Mateos Paloma Álvarez
Departamento de Ingeniería Química, Facultad de Química, Universidad de Sevilla, C/ Profesor García González, 1, 41012 Seville, Spain.
Departamento de Ingeniería Energética. E.T.S. de Ingeniería, Universidad de Sevilla, Camino de los Descubrimientos, s/n, 41092 Seville, Spain.
Plants (Basel). 2020 Mar 30;9(4):418. doi: 10.3390/plants9040418.
has the ability to phytoextract high amounts of heavy metals during its first months just after seeding. Notwithstanding, there is scarce information about metal uptake by adult . plants. To shed light on this issue, 4-year-old L. plants were planted in a soil mixture of peat moss and mining soil (high metals content), and the biomass growth and metal absorption during 90 days were compared with those of plants growing in peat moss. The main metal found in the mining soil was Fe (31985 mg kg) along with high amounts of As (23717 mg kg). After the 90-day phytoremediation, the plant removed 29% of Fe and 44% of As from the soil mixture. Results revealed that L. translocated high amounts of metals to its aerial parts, so that translocation factors were much higher than 1. Because of the high translocation and bioaccumulation factors obtained, L. can be regarded as a hyperaccumulator plant. Despite the great capacity of L. to phytoremediate heavy-metal-contaminated soils, the main drawback is the subsequent handling of the metal-contaminated biomass, although some potential applications have been recently highlighted for this biomass.
在播种后的头几个月里，它有能力从植物中提取大量重金属。尽管如此，关于成年植物对金属的吸收情况，相关信息却很少。为了阐明这个问题，将4岁的某植物种植在泥炭藓和矿质土壤（高金属含量）的混合土壤中，并将其在90天内的生物量增长和金属吸收情况与生长在泥炭藓中的植物进行了比较。矿质土壤中发现的主要金属是铁（31985毫克/千克）以及大量的砷（23717毫克/千克）。经过90天的植物修复后，该植物从混合土壤中去除了29%的铁和44%的砷。结果表明，某植物将大量金属转运到地上部分，因此转运系数远高于1。由于获得了较高的转运和生物积累系数，某植物可被视为一种超积累植物。尽管某植物对重金属污染土壤具有很强的植物修复能力，但其主要缺点是后续对金属污染生物量的处理，不过最近这种生物量有一些潜在的应用被凸显出来。
