镉
积雪草
植物修复
肠杆菌
接种
土壤污染
生物累积
生物
化学
园艺
植物
污染
环境化学
重金属
大肠杆菌
生态学
生物化学
有机化学
基因
作者
Yi Li,Kehui Liu,Yu Wang,Zhenming Zhou,Chaoshu Chen,Panhua Ye,Fang-Ming Yu
出处
期刊:Chemosphere
[Elsevier]
日期:2018-07-01
卷期号:202: 280-288
被引量:30
标识
DOI:10.1016/j.chemosphere.2018.03.097
摘要
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.
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