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Integration of earthworms and arbuscular mycorrhizal fungi into phytoremediation of cadmium-contaminated soil by Solanum nigrum L.
J Hazard Mater. 2020 05 05; 389:121873.JH

Abstract

Arbuscular mycorrhizal fungi (AMF) and earthworms independently enhance plant growth, heavy metal (HM) tolerance, and HM uptake, thus they are potential key factors in phytoremediation. However, few studies have investigated their interactions in HM phytoextraction by hyperaccumulators. This study highlights the independent and interactive effects of earthworms and AMF on Solanum nigrum. Plants inoculated with either AMF or earthworms exhibited ameliorated growth via enhancement of productivity, metal tolerance, and phosphorus (P) acquisition. Co-inoculation with both had more pronounced effects on plant biomass and P acquisition in shoots, but not in roots, and in Cd-polluted soils it significantly promoted (P < 0.05) shoot biomass (20.7-134.6 %) and P content (20.4-112.0 %). AMF and earthworms increased Cd accumulation in plant tissues, but only AMF affected Cd partitioning between shoots and roots. Although AMF decreased root-to-shoot translocation of Cd at high Cd levels, this was counterbalanced by earthworms. Both AMF and its combination with earthworms enhanced Cd phytoavailability by altering Cd chemical fractions and decreasing pH. Co-inoculation increased Cd removal amounts up to 149.3 % in 120 mg kg-1 Cd-spiked soils. Interactions between the two organisms were synergistic in Cd phytoextraction. Thus, earthworm-AMF-plant symbiosis potentially plays an essential role in phytoremediation of HM-polluted soils.

Authors+Show Affiliations

State Key Lab of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, No. 73, Huanghe Road, Nangang District, Harbin, 150090, People's Republic of China.State Key Lab of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, No. 73, Huanghe Road, Nangang District, Harbin, 150090, People's Republic of China. Electronic address: wanglihit@hotmail.com.State Key Lab of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, No. 73, Huanghe Road, Nangang District, Harbin, 150090, People's Republic of China.State Key Lab of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, No. 73, Huanghe Road, Nangang District, Harbin, 150090, People's Republic of China.State Key Lab of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, No. 73, Huanghe Road, Nangang District, Harbin, 150090, People's Republic of China.State Key Lab of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, No. 73, Huanghe Road, Nangang District, Harbin, 150090, People's Republic of China.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

31862351

Citation

Wang, Gen, et al. "Integration of Earthworms and Arbuscular Mycorrhizal Fungi Into Phytoremediation of Cadmium-contaminated Soil By Solanum Nigrum L." Journal of Hazardous Materials, vol. 389, 2020, p. 121873.
Wang G, Wang L, Ma F, et al. Integration of earthworms and arbuscular mycorrhizal fungi into phytoremediation of cadmium-contaminated soil by Solanum nigrum L. J Hazard Mater. 2020;389:121873.
Wang, G., Wang, L., Ma, F., You, Y., Wang, Y., & Yang, D. (2020). Integration of earthworms and arbuscular mycorrhizal fungi into phytoremediation of cadmium-contaminated soil by Solanum nigrum L. Journal of Hazardous Materials, 389, 121873. https://doi.org/10.1016/j.jhazmat.2019.121873
Wang G, et al. Integration of Earthworms and Arbuscular Mycorrhizal Fungi Into Phytoremediation of Cadmium-contaminated Soil By Solanum Nigrum L. J Hazard Mater. 2020 05 5;389:121873. PubMed PMID: 31862351.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Integration of earthworms and arbuscular mycorrhizal fungi into phytoremediation of cadmium-contaminated soil by Solanum nigrum L. AU - Wang,Gen, AU - Wang,Li, AU - Ma,Fang, AU - You,Yongqiang, AU - Wang,Yujiao, AU - Yang,Dongguang, Y1 - 2019/12/10/ PY - 2019/09/03/received PY - 2019/12/01/revised PY - 2019/12/09/accepted PY - 2019/12/22/pubmed PY - 2021/1/5/medline PY - 2019/12/22/entrez KW - Cd fraction KW - Co-inoculation KW - Eisenia fetida KW - Hyperaccumulator KW - Rhizophagus irregularis SP - 121873 EP - 121873 JF - Journal of hazardous materials JO - J Hazard Mater VL - 389 N2 - Arbuscular mycorrhizal fungi (AMF) and earthworms independently enhance plant growth, heavy metal (HM) tolerance, and HM uptake, thus they are potential key factors in phytoremediation. However, few studies have investigated their interactions in HM phytoextraction by hyperaccumulators. This study highlights the independent and interactive effects of earthworms and AMF on Solanum nigrum. Plants inoculated with either AMF or earthworms exhibited ameliorated growth via enhancement of productivity, metal tolerance, and phosphorus (P) acquisition. Co-inoculation with both had more pronounced effects on plant biomass and P acquisition in shoots, but not in roots, and in Cd-polluted soils it significantly promoted (P < 0.05) shoot biomass (20.7-134.6 %) and P content (20.4-112.0 %). AMF and earthworms increased Cd accumulation in plant tissues, but only AMF affected Cd partitioning between shoots and roots. Although AMF decreased root-to-shoot translocation of Cd at high Cd levels, this was counterbalanced by earthworms. Both AMF and its combination with earthworms enhanced Cd phytoavailability by altering Cd chemical fractions and decreasing pH. Co-inoculation increased Cd removal amounts up to 149.3 % in 120 mg kg-1 Cd-spiked soils. Interactions between the two organisms were synergistic in Cd phytoextraction. Thus, earthworm-AMF-plant symbiosis potentially plays an essential role in phytoremediation of HM-polluted soils. SN - 1873-3336 UR - https://www.unboundmedicine.com/medline/citation/31862351/Integration_of_earthworms_and_arbuscular_mycorrhizal_fungi_into_phytoremediation_of_cadmium_contaminated_soil_by_Solanum_nigrum_L_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0304-3894(19)31827-8 DB - PRIME DP - Unbound Medicine ER -