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Effects of nano-Fe3O4-modified biochar on iron plaque formation and Cd accumulation in rice (Oryza sativa L.).
Environ Pollut. 2020 May; 260:113970.EP

Abstract

Nano-Fe3O4-modified biochar (BC-Fe) was prepared by the coprecipitation of nano-Fe3O4 on a rice husk biochar surface. The effects of BC-Fe on cadmium (Cd) bioavailability in soil and on Cd accumulation and translocation in rice (Oryza sativa L. cv. 'H You 518') were investigated in a pot experiment with 7 application rates (0.05-1.6%, w/w). BC-Fe increased the biomass of the rice plants except for the roots and affected the concentration and accumulation of Cd and Fe in the plants. The Cd concentrations of brown rice were significantly decreased by 48.9%, 35.6%, and 46.5% by the 0.05%, 0.2%, and 0.4% BC-Fe treatments, respectively. Soil cation exchange capacity (CEC) increased by 9.4%-164.1% in response to the application of BC-Fe (0.05-1.6%), while the soil Cd availability decreased by 6.81%-25.0%. However, 0.8-1.6% BC-Fe treatments promoted Cd transport to leaves, which could increase the risk of Cd accumulation in brown rice. Furthermore, BC-Fe application promoted the formation of iron plaque and enhanced the root interception of Cd. The formation of iron plaque reduced the toxicity of Cd to rice roots, but this barrier effect was limited and had an interval threshold (DCB-Fe: 22.5-27.3 g·kg-1) under BC-Fe treatments.

Authors+Show Affiliations

College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China; Hunan Engineering Laboratory for Control of Rice Quality and Safety, Changsha, 410004, China.College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China; Hunan Engineering Laboratory for Control of Rice Quality and Safety, Changsha, 410004, China. Electronic address: zhouhang4607@163.com.College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China; Hunan Engineering Laboratory for Control of Rice Quality and Safety, Changsha, 410004, China.College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China; Hunan Engineering Laboratory for Control of Rice Quality and Safety, Changsha, 410004, China.College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China; Hunan Engineering Laboratory for Control of Rice Quality and Safety, Changsha, 410004, China.College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China; Hunan Engineering Laboratory for Control of Rice Quality and Safety, Changsha, 410004, China.College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China; Hunan Engineering Laboratory for Control of Rice Quality and Safety, Changsha, 410004, China.College of Environmental Science and Engineering, Central South University of Forestry and Technology, Changsha, 410004, China; Hunan Engineering Laboratory for Control of Rice Quality and Safety, Changsha, 410004, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32014742

Citation

Zhang, Jing-Yi, et al. "Effects of nano-Fe3O4-modified Biochar On Iron Plaque Formation and Cd Accumulation in Rice (Oryza Sativa L.)." Environmental Pollution (Barking, Essex : 1987), vol. 260, 2020, p. 113970.
Zhang JY, Zhou H, Gu JF, et al. Effects of nano-Fe3O4-modified biochar on iron plaque formation and Cd accumulation in rice (Oryza sativa L.). Environ Pollut. 2020;260:113970.
Zhang, J. Y., Zhou, H., Gu, J. F., Huang, F., Yang, W. J., Wang, S. L., Yuan, T. Y., & Liao, B. H. (2020). Effects of nano-Fe3O4-modified biochar on iron plaque formation and Cd accumulation in rice (Oryza sativa L.). Environmental Pollution (Barking, Essex : 1987), 260, 113970. https://doi.org/10.1016/j.envpol.2020.113970
Zhang JY, et al. Effects of nano-Fe3O4-modified Biochar On Iron Plaque Formation and Cd Accumulation in Rice (Oryza Sativa L.). Environ Pollut. 2020;260:113970. PubMed PMID: 32014742.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effects of nano-Fe3O4-modified biochar on iron plaque formation and Cd accumulation in rice (Oryza sativa L.). AU - Zhang,Jing-Yi, AU - Zhou,Hang, AU - Gu,Jiao-Feng, AU - Huang,Fang, AU - Yang,Wen-Jun, AU - Wang,Shi-Long, AU - Yuan,Teng-Yue, AU - Liao,Bo-Han, Y1 - 2020/01/16/ PY - 2019/08/11/received PY - 2019/12/19/revised PY - 2020/01/10/accepted PY - 2020/2/6/pubmed PY - 2020/6/27/medline PY - 2020/2/5/entrez KW - Biochar KW - Cadmium KW - Iron plaque KW - Nano-Fe(3)O(4) KW - Rice SP - 113970 EP - 113970 JF - Environmental pollution (Barking, Essex : 1987) JO - Environ Pollut VL - 260 N2 - Nano-Fe3O4-modified biochar (BC-Fe) was prepared by the coprecipitation of nano-Fe3O4 on a rice husk biochar surface. The effects of BC-Fe on cadmium (Cd) bioavailability in soil and on Cd accumulation and translocation in rice (Oryza sativa L. cv. 'H You 518') were investigated in a pot experiment with 7 application rates (0.05-1.6%, w/w). BC-Fe increased the biomass of the rice plants except for the roots and affected the concentration and accumulation of Cd and Fe in the plants. The Cd concentrations of brown rice were significantly decreased by 48.9%, 35.6%, and 46.5% by the 0.05%, 0.2%, and 0.4% BC-Fe treatments, respectively. Soil cation exchange capacity (CEC) increased by 9.4%-164.1% in response to the application of BC-Fe (0.05-1.6%), while the soil Cd availability decreased by 6.81%-25.0%. However, 0.8-1.6% BC-Fe treatments promoted Cd transport to leaves, which could increase the risk of Cd accumulation in brown rice. Furthermore, BC-Fe application promoted the formation of iron plaque and enhanced the root interception of Cd. The formation of iron plaque reduced the toxicity of Cd to rice roots, but this barrier effect was limited and had an interval threshold (DCB-Fe: 22.5-27.3 g·kg-1) under BC-Fe treatments. SN - 1873-6424 UR - https://www.unboundmedicine.com/medline/citation/32014742/Effects_of_nano_Fe3O4_modified_biochar_on_iron_plaque_formation_and_Cd_accumulation_in_rice__Oryza_sativa_L___ DB - PRIME DP - Unbound Medicine ER -