Department of Biology, Faculty of Science, Srinakharinwirot University, Bangkok, Thailand.
Bodhivijjalaya College, Srinakharinwirot University, Nakhon Nayok, Thailand.
Int J Phytoremediation. 2021;23(10):1061-1066. doi: 10.1080/15226514.2021.1876626. Epub 2021 Jan 27.
To assess the cadmium (Cd) phytoremediation of three native plant species from Padeang zinc (Zn) mine area (, , and ), a hydroponic experiment was performed in nutrient solutions containing various concentrations of Cd (0, 5, 10, 20, and 50 mg L) for 15 days. In the hydroponic experiment, showed significantly higher total Cd content than those grown in 50 mg L Cd solutions. Only and were chosen for the pot experiment. The plants were grown in spiked Cd-contaminated soils for 90 days, with different concentrations of Cd (0, 20, 40, 60, and 80 mg kg). The results from the pot experiment revealed that both species accumulated more Cd in their root parts, with translocation factor values < 1. exhibited the highest biomass production, relative growth rate, and Cd uptake or removal. The findings of the study clearly demonstrate the best uptake of in Cd phytoremediation. Even though have been reported as a Cd accumulator but the assessment of these species by nutrient medium and the soil was not undertaken so far. The discovery of new Cd-accumulator plants has been hindered by the lack of efficient assessing. To assess the suitability of specific species of tropical plants that are able to uptake high amounts of Cd without risk of toxicity under conditions similar to the actual field study, is a novelty.
为了评估三种来自巴当锌矿区（ 、 、 ）的本地植物对镉（Cd）的植物修复能力，在含有不同浓度 Cd（0、5、10、20 和 50mg/L）的营养液中进行了为期 15 天的水培实验。在水培实验中， 表现出的总 Cd 含量明显高于在 50mg/L Cd 溶液中生长的 Cd 含量。仅 和 被选择用于盆栽实验。这些植物在添加了 Cd 污染土壤中生长了 90 天，Cd 的浓度分别为 0、20、40、60 和 80mg/kg。盆栽实验的结果表明，两种植物都在根部积累了更多的 Cd，迁移系数值<1。 表现出最高的生物量生产、相对生长率和 Cd 吸收或去除。研究结果清楚地表明 在 Cd 植物修复中具有最佳的吸收能力。尽管 被报道为 Cd 积累者，但迄今为止尚未对这些物种进行营养介质和土壤评估。由于缺乏有效的评估，新的 Cd 积累植物的发现受到阻碍。评估能够在类似于实际田间研究的条件下吸收大量 Cd 而不会产生毒性风险的热带植物特定物种的适宜性是一个新颖的课题。
