title: Effects of EDDS and plant-growth-promoting bacteria on plant uptake of trace metals and PCBs from e-waste-contaminated soil.
abstract: The present study investigated the effects of the biodegradable chelant S,S-ethylenediaminedisuccinic acid (EDDS) and the plant-growth-promoting bacterium DGS6 on pollutant uptake by corn from e-waste-contaminated soils. The highest concentration and total uptake of Cu and Zn in corn shoots were observed in the presence of EDDS and DGS6+EDDS, respectively. The ΣPCB concentrations in shoots ranged from 0.53 to 0.72 ng g(-1), and the highest PCB concentration was observed in the presence of EDDS. This could be ascribed to the enhanced dissolved organic carbon, increased dissolution and efficient translocation of PCBs from roots to shoots, as well as potential root damage due to increased soluble metal levels in soil solution. In contrast, the highest total uptake of PCBs in shoots was observed in the presence of DGS6, likely due to enhanced shoot biomass and high levels of air deposition.
authors: Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China. Electronic address: clluo@gig.ac.cn.
authors: Chunling
authors: C
authors: Luo
authors: Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; Graduate University of Chinese Academy of Sciences, Beijing 100039, China.
authors: Shaorui
authors: S
authors: Wang
authors: Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
authors: Yan
authors: Y
authors: Wang
authors: College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China.
authors: Renxiu
authors: R
authors: Yang
authors: Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China.
authors: Gan
authors: G
authors: Zhang
authors: College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China.
authors: Zhenguo
authors: Z
authors: Shen
mesh_terms: D003300:Copper / Q000032:analysis / Q000737:chemistry / Q000378:metabolism; D059029:Electronic Waste; D005029:Ethylenediamines / Q000737:chemistry*; D018517:Plant Roots / Q000254:growth & development / Q000378:metabolism; D018520:Plant Shoots / Q000254:growth & development / Q000378:metabolism; D011078:Polychlorinated Biphenyls / Q000032:analysis / Q000737:chemistry / Q000378:metabolism; D011549:Pseudomonas; D012988:Soil Microbiology; D012989:Soil Pollutants / Q000032:analysis / Q000737:chemistry / Q000378:metabolism; D013386:Succinates / Q000737:chemistry*; D003313:Zea mays / Q000254:growth & development / Q000378:metabolism; D015032:Zinc / Q000032:analysis / Q000737:chemistry / Q000378:metabolism
chemical_list: D005029:Ethylenediamines; D012989:Soil Pollutants; D013386:Succinates; C041447:N,N'-ethylenediamine disuccinic acid; D003300:Copper; D011078:Polychlorinated Biphenyls; D015032:Zinc
keywords: E-waste; EDDS; PCBs; PGPB; Trace metals