Pb Uptake and Phytostabilization Potential of the Mining Ecotype of Athyrium wardii (Hook.) Grown in Pb‐Contaminated Soil

Abstract

Research ArticlePb Uptake and Phytostabilization Potential of the Mining Ecotype of Athyrium wardii (Hook.) Grown in Pb-Contaminated Soil Phytostabilization has been proposed as a cost-effective remediation strategy to immobilize metals in heavy metal polluted soils. A pot experiment was conducted to evaluate the Pb uptake characteristics and phytostabilization potential of the mining ecotype (ME) of Athyrium wardii and the corresponding non-mining ecotype (NME) when exposed to the Pb contaminated soils for 40 days. The ME was more tolerant to Pb than the NME when grown in Pb contaminated soil, and the ME demonstrated a greater Pb accumulation ability in roots (30.6-175.45 mg plant À1 ) than the NME (0.85-25.59 mg plant À1 ). The bioaccumulation coefficients of ME ranging from 52.02 to 83.16 were 3.24-8.89 times higher than those of the NME under Pb treatment, and the translocation factors of ME ranging from 0.022 to 0.079 were <1. The ME showed a higher capability in absorbing available Pb in soil than the NME. Furthermore, Pb remediation factors in roots of the ME were 6.93-15.35 times higher than those of the NME, and the plant effective number in roots of the ME ranging from 5.70 to 12.74 were lower than those of the NME. These results indicated that the ME showed a greater Pb uptake and phytostabilization potential than the NME, which enabled it as a worthy candidate for Pb phytostabilization.

Phytoremediation Potential of Jack Bean Plant for Multi‐Element Contaminated Soils From Ribeira Valley, Brazil

“…The BCF indicates the relationship between metal concentration in plant tissues and metal concentration in soil. BCF > 1 indicates an accumulation of metal by plants while BCF < 1 shows the plants exclude metal ions and its potential for phytostabilization of metal contaminated soils . The results indicate C. ensiformis has dual behavior related to soil phytoremediation which depends on the element.…”

“…The ability of C. ensiformis to translocate metals to shoots was estimated by the translocation index (TI), which was calculated as the percentage of the total amount of metal(oid)s absorbed by the plant that was translocated to shoots . The bioaccumulation coefficient (BCF) was calculated according to Zhao et al and Zhang et al, as the ratio of metal(oid)s concentration in plants to that in soil (in terms of total element concentration).…”