2010•Nongye huanjing kexue xuebaoRequires access
Effects of Microorganisms on the Bioavailability of Cadmium,Lead and Zinc in Soil
Xiaojun Lu, Bowen Li, Yang Zhuo, Ying Jia, Shuna Li
Open publisher page 1 citations
Abstract
The study was conducted to investigate the effects of microbial inoculation on bioavailability of Cd,Pb and Zn in soil when Brassica juncea as a hyperaccumulator growing using a pot experiment.The results showed that stains JA27,JC55 and JC40 not only promoted plant growth markedly and decreased soil pH,but also improved the bioavailability of Cd,Pb,Zn in the soil,which significantly enhanced the phy-toremeditation efficiency of three heavy metals eventually.Furthermore,the concentrations of Cd,Pb and Zn in shoot of Brassica juncea in-creased by 117% to 137%,37% to 62% and 9% to 15.1% when strains JA27,JC55 and JC40 inoculated in soil,respectively.However,stain JB37 inhibited Cd,Pb,Zn uptake from soil,and decreased the concentrations of Cd,Pb,Zn in Brassica juncea.The concentrations of Pb and Zn in shoot of Brassica juncea decreased by 72.5% and 27% in treatment of stain JB37 inoculation,but had no significant effect on Cd con-centrations.