title: [Effects of arbuscular mycorrhizal fungi on the growth and rare earth elements uptake of soybean grown in rare earth mine tailings].
abstract: A greenhouse pot experiment was conducted to investigate the influence of arbuscular mycorrhizal (AM) fungi Glomus versiforme on the plant growth, nutrient uptake, C: N: P stoichiometric, uptake of heavy metals and rare earth elements by soybean (Glycine max) grown in rare earth mine tailings. The aim was to provide a basis for the revegetation of rare earth mine tailings. The results indicated that soybean had a high mycorrhizal colonization and symbiotic associations were successfully established with G. versiforme, with an average rate of approximately 67%. The colonization of G. versiforme significantly promoted the growth of soybean, increased P, K contents, and decreased C: N: P ratios, supporting the growth rate hypothesis. Inoculation with G. versiforme significantly decreased shoots and roots La, Ce, Pr and Nd concentrations of soybean compared to the control treatment. However, inoculation with G. versiforme had no significant effect on the heavy metal concentrations, except for significantly decreased shoot Fe and Cr concentrations and increased root Cd concentrations. The experiment demonstrates that AM fungi have a potential role for soybean to adapt the composite adversity of rare earth tailings and play a positive role in revegetation of rare earth mine tailings. Further studies on the role of AM fungi under natural conditions should be conducted.
authors.affiliation: College of Environment and Resources of Inner Mongolia University, Hohhot 010021, China. guowei-1976-z@hotmail.com
authors.forename: Wei
authors.initials: W
authors.lastname: Guo
authors.forename: Ren-xin
authors.initials: RX
authors.lastname: Zhao
authors.forename: Wen-jing
authors.initials: WJ
authors.lastname: Zhao
authors.forename: Rui-ying
authors.initials: RY
authors.lastname: Fu
authors.forename: Jiang-yuan
authors.initials: JY
authors.lastname: Guo
authors.forename: Jun
authors.initials: J
authors.lastname: Zhang
mesh_terms: D059827:Agricultural Inoculants; D052918:Environmental Restoration and Remediation / Q000379:methods*; D008674:Metals, Rare Earth / Q000032:analysis / Q000378:metabolism*; D008906:Mining; D038821:Mycorrhizae / Q000502:physiology*; D012989:Soil Pollutants / Q000032:analysis / Q000378:metabolism*; D013025:Glycine max / Q000254:growth & development* / Q000378:metabolism
chemical_list: D008674:Metals, Rare Earth; D012989:Soil Pollutants