title: Enhanced bioremediation of lead-contaminated soil by Solanum nigrum L. with Mucor circinelloides.
abstract: Strain selected from mine tailings in Anshan for Pb bioremediation was characterized at the genetic level by internal transcribed spacer (ITS) sequencing. Results revealed that the strain belongs to Mucor circinelloides. Bioremediation of lead-contaminated soil was conducted using Solanum nigrum L. combined with M. circinelloides. The removal efficacy was in the order microbial/phytoremediation > phytoremediation > microbial remediation > control. The bioremediation rates were 58.6, 47.2, and 40.2% in microbial/phytoremediation, microbial remediation, and phytoremediation groups, respectively. Inoculating soil with M. circinelloides enhanced Pb removal and S. nigrum L. growth. The bioaccumulation factor (BF, 1.43), enrichment factor (EF, 1.56), and translocation factor (TF, 1.35) were higher than unit, suggesting an efficient ability of S. nigrum L. in Pb bioremediation. Soil fertility was increased after bioremediation according to change in enzyme activities. The results indicated that inoculating S. nigrum L. with M. circinelloides enhanced its efficiency for phytoremediation of soil contaminated with Pb.
authors.affiliation: School of Environmental Science and Engineering, Shandong University, Ji'nan, 250100, China.
authors.forename: Liqun
authors.initials: L
authors.lastname: Sun
authors.affiliation: Weifang University of Science and Technology, Shouguang, 262700, China.
authors.forename: Xiufeng
authors.initials: X
authors.lastname: Cao
authors.affiliation: School of Environmental Science and Engineering, Shandong University, Ji'nan, 250100, China.
authors.forename: Min
authors.initials: M
authors.lastname: Li
authors.affiliation: School of Environmental Science and Engineering, Shandong University, Ji'nan, 250100, China.
authors.forename: Xu
authors.initials: X
authors.lastname: Zhang
authors.affiliation: School of Environmental Science and Engineering, Shandong University, Ji'nan, 250100, China.
authors.forename: Xinxin
authors.initials: X
authors.lastname: Li
authors.affiliation: School of Environmental Science and Engineering, Shandong University, Ji'nan, 250100, China. cuizj@sdu.edu.cn.
authors.forename: Zhaojie
authors.initials: Z
authors.lastname: Cui
mesh_terms: D001673:Biodegradation, Environmental; D002104:Cadmium; D009089:Mucor; D012987:Soil; D012989:Soil Pollutants; D032324:Solanum nigrum
chemical_list: D012987:Soil; D012989:Soil Pollutants; D002104:Cadmium
keywords: Bioremediation; Enzyme activity; ITS sequencing; Lead; Mucor circinelloides; Solanum nigrum L.