Wu S C, Cheung K C, Luo Y M, Wong M H
Department of Biology and Croucher Institute for Environmental Sciences, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, P.R. China.
Environ Pollut. 2006 Mar;140(1):124-35. doi: 10.1016/j.envpol.2005.06.023. Epub 2005 Sep 16.
A greenhouse study was carried out with Brassica juncea to critically evaluate effects of bacterial inoculation on the uptake of heavy metals from Pb-Zn mine tailings by plants. Application of plant growth-promoting rhizobacteria, including nitrogen-fixing bacteria and phosphate and potassium solubilizers, might play an important role in the further development of phytoremediation techniques. The presence of these beneficial bacteria stimulated plant growth and protected the plant from metal toxicity. Inoculation with rhizobacteria had little influence on the metal concentrations in plant tissues, but produced a much larger above-ground biomass and altered metal bioavailability in the soil. As a consequence, higher efficiency of phytoextraction was obtained compared with control treatments.
利用芥菜进行了一项温室研究，以严格评估细菌接种对植物从铅锌矿尾矿中吸收重金属的影响。应用促进植物生长的根际细菌，包括固氮细菌以及能溶解磷和钾的细菌，可能在植物修复技术的进一步发展中发挥重要作用。这些有益细菌的存在促进了植物生长，并保护植物免受金属毒性影响。接种根际细菌对植物组织中的金属浓度影响不大，但产生了更大的地上生物量，并改变了土壤中金属的生物有效性。因此，与对照处理相比，植物提取效率更高。
