Improvement of cadmium phytoremediation by Centella asiatica L. after soil inoculation with cadmium-resistant Enterobacter sp. FM-1. (July 2018)

• Record Type: Journal Article
• Authors: Li, Yi; Liu, Kehui; Wang, Yang; Zhou, Zhenming; Chen, Chaoshu; Ye, Panhua; Yu, Fangming
• Is Part Of: Chemosphere. Volume 202(2018)
• Page Start: 280
• Page End: 288
• Publication Date: 2018-07
• Subjects: Phytoremediation -- Cadmium -- Centella asiatica L. Enterobacter sp. FM-1 -- Mining area; Pollution -- Periodicals; Pollution -- Physiological effect -- Periodicals; Environmental sciences -- Periodicals; Atmospheric chemistry -- Periodicals; 551.511
• DOI: 10.1016/j.chemosphere.2018.03.097
• Languages: English
• ISSNs: 0045-6535

Abstract

Abstract: This study examined the potential of a cadmium-resistant Enterobacter sp. FM-1 to promote plant growth and assist in cadmium accumulation in both mine-type C. asiatica L. and non-mine type C. asiatica L. tissues in highly cadmium-polluted soils. The results indicated that Enterobacter sp. FM-1 significantly promoted growth and alleviated metal toxicity in both types of C. asiatica L. Meanwhile, inoculation with Enterobacter sp. FM-1 in contaminated soil can increased cadmium bioavailability in soil. Furthermore, it will increase plant uptake and the accumulation of cadmium in C. asiatica L. leaves, stems and roots compared to that in an uninoculated plant. However, mine-type C. asiatica L. had better cadmium tolerance than the non mine-type C. asiatica L. Because of its native metal-tolerant ability, which could easily grow and proliferate, and had a better performance under cadmium-contamination conditions. Additionally, inoculation with Enterobacter sp. FM-1 significantly enhanced the bioaccumulation factor (BAF) and the translocation factor (TF) values in both types of C. asiatica L. even under high cadmium concentration soil condition. Hence, based on higher BAF and TF values and strong cadmium accumulation in the leaves and stems, we concluded that inoculation with Enterobacter sp. FM-1 is potentially useful for the phytoremediation of cadmium-contaminated sites by Centella asiatica L. Highlights: Inoculation with Enterobacter sp. FM-1 enhanced C. asiatica L. growth in Cd-contaminated soil. Enterobacter sp. FM-1 increased Cd bioavailability in soils. Inoculation with Enterobacter sp. FM-1 promoted Cd uptake in C. asiatica L. A combination of C. asiatica L. and Enterobacter sp. FM-1 stimulated Cd phytoremediation.