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Strengthening role and the mechanism of optimum nitrogen addition in relation to Solanum nigrum L. Cd hyperaccumulation in soil.
Ecotoxicol Environ Saf. 2019 Oct 30; 182:109444.EE

Abstract

Solanum nigrum L. has a high potential for the remediation of Cd-contaminated soil, and nitrogen fertilizer supply is an effective method to further improve its phytoremediation potential. The soil pot culture experiment was used to explore 4 kinds of nitrogen fertilizers the best fertilizer addition concentrations and their strengthening mechanisms. The results showed that S. nigrum biomass increased with increasing N doses until 800 mg kg-1, where the biomass reached maximum and no longer improved (p < 0.05). However, Cd concentration accumulated by S. nigrum and the extractable Cd concentration in soil did not show a significant decrease (p < 0.05). In this experiment, when N fertilizer was added at 800 mg kg-1 (NH4HCO3, NH4Cl, (NH4)2SO4 and CH4N2O fertilizers), the biomass of the aboveground S. nigrum parts improved to the maximum under (NH4)2SO4 and CH4N2O treatments, i.e. 5.86 g pot-1 and 5.83 g pot-1, increased by 5.92- and 5.89-fold, respectively (p < 0.05), compared to the controls without N fertilizers addition. At the same time, Cd phytoaccumulation in plants was elevated to 128.40 μg pot-1 and 129.14 μg pot-1, increased by 6.20- and 6.24-fold, respectively (p < 0.05), compared to control with no fertilizer added. The results of this experiment demonstrated that Cd phytoextraction capacity (μg pot-1) was the strongest under (NH4)2SO4 and CH4N2O treatments at N content of 800 mg kg-1, when plant nutrient recovery reached the maximum, and these 2 types of nitrogen fertilizers could be utilized to remediate Cd-contaminated soil in field experiments or even in practice.

Authors+Show Affiliations

Key Laboratory of Pollution Ecology and Environment Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China; University of Chinese Academy of Sciences, Beijing, 100039, China.College of Biological Science & Engineering, Shaanxi Province Key Laboratory of Bio-resources, Shaanxi University of Technology, Hanzhong, 723001, China. Electronic address: daihp72@aliyun.com.Department of Molecular Biology and Cytology, Institute for Research on Biodiversity, University of Szczecin, Szczecin, 71-415, Poland.Key Laboratory of Pollution Ecology and Environment Engineering, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang, 110016, China. Electronic address: shuhewei@iae.ac.cn.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31310903

Citation

Yang, Wei, et al. "Strengthening Role and the Mechanism of Optimum Nitrogen Addition in Relation to Solanum Nigrum L. Cd Hyperaccumulation in Soil." Ecotoxicology and Environmental Safety, vol. 182, 2019, p. 109444.
Yang W, Dai H, Skuza L, et al. Strengthening role and the mechanism of optimum nitrogen addition in relation to Solanum nigrum L. Cd hyperaccumulation in soil. Ecotoxicol Environ Saf. 2019;182:109444.
Yang, W., Dai, H., Skuza, L., & Wei, S. (2019). Strengthening role and the mechanism of optimum nitrogen addition in relation to Solanum nigrum L. Cd hyperaccumulation in soil. Ecotoxicology and Environmental Safety, 182, 109444. https://doi.org/10.1016/j.ecoenv.2019.109444
Yang W, et al. Strengthening Role and the Mechanism of Optimum Nitrogen Addition in Relation to Solanum Nigrum L. Cd Hyperaccumulation in Soil. Ecotoxicol Environ Saf. 2019 Oct 30;182:109444. PubMed PMID: 31310903.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Strengthening role and the mechanism of optimum nitrogen addition in relation to Solanum nigrum L. Cd hyperaccumulation in soil. AU - Yang,Wei, AU - Dai,Huiping, AU - Skuza,Lidia, AU - Wei,Shuhe, Y1 - 2019/07/13/ PY - 2019/05/08/received PY - 2019/07/09/revised PY - 2019/07/10/accepted PY - 2019/7/17/pubmed PY - 2019/10/23/medline PY - 2019/7/17/entrez KW - Cadmium KW - Concentration-gradient dependence KW - Nitrogen fertilizer KW - Phytoremediation KW - Solanum nigrum L SP - 109444 EP - 109444 JF - Ecotoxicology and environmental safety JO - Ecotoxicol Environ Saf VL - 182 N2 - Solanum nigrum L. has a high potential for the remediation of Cd-contaminated soil, and nitrogen fertilizer supply is an effective method to further improve its phytoremediation potential. The soil pot culture experiment was used to explore 4 kinds of nitrogen fertilizers the best fertilizer addition concentrations and their strengthening mechanisms. The results showed that S. nigrum biomass increased with increasing N doses until 800 mg kg-1, where the biomass reached maximum and no longer improved (p < 0.05). However, Cd concentration accumulated by S. nigrum and the extractable Cd concentration in soil did not show a significant decrease (p < 0.05). In this experiment, when N fertilizer was added at 800 mg kg-1 (NH4HCO3, NH4Cl, (NH4)2SO4 and CH4N2O fertilizers), the biomass of the aboveground S. nigrum parts improved to the maximum under (NH4)2SO4 and CH4N2O treatments, i.e. 5.86 g pot-1 and 5.83 g pot-1, increased by 5.92- and 5.89-fold, respectively (p < 0.05), compared to the controls without N fertilizers addition. At the same time, Cd phytoaccumulation in plants was elevated to 128.40 μg pot-1 and 129.14 μg pot-1, increased by 6.20- and 6.24-fold, respectively (p < 0.05), compared to control with no fertilizer added. The results of this experiment demonstrated that Cd phytoextraction capacity (μg pot-1) was the strongest under (NH4)2SO4 and CH4N2O treatments at N content of 800 mg kg-1, when plant nutrient recovery reached the maximum, and these 2 types of nitrogen fertilizers could be utilized to remediate Cd-contaminated soil in field experiments or even in practice. SN - 1090-2414 UR - https://www.unboundmedicine.com/medline/citation/31310903/Strengthening_role_and_the_mechanism_of_optimum_nitrogen_addition_in_relation_to_Solanum_nigrum_L__Cd_hyperaccumulation_in_soil_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0147-6513(19)30775-4 DB - PRIME DP - Unbound Medicine ER -