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Combined effects of ZnO NPs and Cd on sweet sorghum as influenced by an arbuscular mycorrhizal fungus.
Chemosphere. 2018 Oct; 209:421-429.C

Abstract

Both metals and metal-based nanoparticles (NPs) can easily accumulate in soil, posing risks for plants and microbes. However, the interaction between NPs and toxic metals coexisting in soil is not yet well understood. Here, we studied the combined effects of ZnO NPs and Cd on sweet sorghum inoculated with or without the arbuscular mycorrhizal (AM) fungus Funneliformis caledonium. Plants were grown in soil amended with ZnO NPs (50, 250, and 500 mg/kg), alone or in combination with 5 mg/kg Cd. The two higher doses of ZnO NPs inhibited plant growth, leading to synergistic toxicity with Cd. However, at the lowest dose, ZnO NPs were non-phytotoxic, displaying antagonistic interactions with Cd on plant growth. When added with high doses of ZnO NPs, Cd significantly increased root Zn concentrations, but decreased shoot Zn concentrations at the low dose. Conversely, all doses of ZnO NPs significantly decreased shoot and root Cd concentrations. Furthermore, high doses of ZnO NPs generally inhibited soil enzyme activities, but Cd addition showed no significant or even stimulative effects, and mitigated the inhibitory effects of ZnO NPs. AM inoculation increased plant growth and P nutrition, and soil enzyme activities. When the low dose of ZnO NPs was added alone or in combination with Cd, AM inoculation decreased shoot Zn concentrations. Our results reveal complex interactions between ZnO NPs and Cd on plant growth and nutrition, plant Zn and Cd accumulation, and soil enzyme activities, while AM inoculation can help diminish the adverse effects induced by ZnO NPs and Cd.

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Authors+Show Affiliations

Wang F
College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao, Shandong Province 266042, PR China; Agricultural College, Henan University of Science and Technology, Luoyang, Henan Province 471023, PR China. Electronic address: wangfayuan@qust.edu.cn.
Adams CA
Department of Plant and Microbial Biology, University of California Berkeley, California, USA.
Shi Z
Agricultural College, Henan University of Science and Technology, Luoyang, Henan Province 471023, PR China.
Sun Y
College of Environment and Safety Engineering, Qingdao University of Science and Technology, Qingdao, Shandong Province 266042, PR China.

MeSH

CadmiumMetal NanoparticlesMycorrhizaePlant RootsSoil PollutantsSorghumZinc Oxide

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29936115

Citation

Wang, Fayuan, et al. "Combined Effects of ZnO NPs and Cd On Sweet Sorghum as Influenced By an Arbuscular Mycorrhizal Fungus." Chemosphere, vol. 209, 2018, pp. 421-429.
Wang F, Adams CA, Shi Z, et al. Combined effects of ZnO NPs and Cd on sweet sorghum as influenced by an arbuscular mycorrhizal fungus. Chemosphere. 2018;209:421-429.
Wang, F., Adams, C. A., Shi, Z., & Sun, Y. (2018). Combined effects of ZnO NPs and Cd on sweet sorghum as influenced by an arbuscular mycorrhizal fungus. Chemosphere, 209, 421-429. https://doi.org/10.1016/j.chemosphere.2018.06.099
Wang F, et al. Combined Effects of ZnO NPs and Cd On Sweet Sorghum as Influenced By an Arbuscular Mycorrhizal Fungus. Chemosphere. 2018;209:421-429. PubMed PMID: 29936115.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Combined effects of ZnO NPs and Cd on sweet sorghum as influenced by an arbuscular mycorrhizal fungus. AU - Wang,Fayuan, AU - Adams,Catharine A, AU - Shi,Zhaoyong, AU - Sun,Yuhuan, Y1 - 2018/06/14/ PY - 2018/04/11/received PY - 2018/06/10/revised PY - 2018/06/12/accepted PY - 2018/6/25/pubmed PY - 2018/9/27/medline PY - 2018/6/25/entrez KW - Arbuscular mycorrhizae KW - Cadmium KW - Nanoparticle KW - Phytotoxicity KW - Sorghum bicolor (L.) Moench KW - Synergistic toxicity SP - 421 EP - 429 JF - Chemosphere JO - Chemosphere VL - 209 N2 - Both metals and metal-based nanoparticles (NPs) can easily accumulate in soil, posing risks for plants and microbes. However, the interaction between NPs and toxic metals coexisting in soil is not yet well understood. Here, we studied the combined effects of ZnO NPs and Cd on sweet sorghum inoculated with or without the arbuscular mycorrhizal (AM) fungus Funneliformis caledonium. Plants were grown in soil amended with ZnO NPs (50, 250, and 500 mg/kg), alone or in combination with 5 mg/kg Cd. The two higher doses of ZnO NPs inhibited plant growth, leading to synergistic toxicity with Cd. However, at the lowest dose, ZnO NPs were non-phytotoxic, displaying antagonistic interactions with Cd on plant growth. When added with high doses of ZnO NPs, Cd significantly increased root Zn concentrations, but decreased shoot Zn concentrations at the low dose. Conversely, all doses of ZnO NPs significantly decreased shoot and root Cd concentrations. Furthermore, high doses of ZnO NPs generally inhibited soil enzyme activities, but Cd addition showed no significant or even stimulative effects, and mitigated the inhibitory effects of ZnO NPs. AM inoculation increased plant growth and P nutrition, and soil enzyme activities. When the low dose of ZnO NPs was added alone or in combination with Cd, AM inoculation decreased shoot Zn concentrations. Our results reveal complex interactions between ZnO NPs and Cd on plant growth and nutrition, plant Zn and Cd accumulation, and soil enzyme activities, while AM inoculation can help diminish the adverse effects induced by ZnO NPs and Cd. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/29936115/Combined_effects_of_ZnO_NPs_and_Cd_on_sweet_sorghum_as_influenced_by_an_arbuscular_mycorrhizal_fungus_ DB - PRIME DP - Unbound Medicine ER -