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The risks of sulfur addition on cadmium accumulation in paddy rice under different water-management conditions.
J Environ Sci (China). 2022 Aug; 118:101-111.JE

Abstract

Recently, the application of sulfur (S) has been recommended to control the accumulation of cadmium (Cd) in rice in contaminated paddy soil. However, the effects of exogenous S on Cd transfer in paddy rice systems under different water-management practices have not been systematically investigated. Pot experiments were performed to monitor the composition of soil pore water and the Cd accumulation in iron plaque and rice tissue were compared under different S (0 and 200 mg/kg Na2SO4) and water (continuous and discontinuous flooding) treatments. Sulfur application significantly increased Cd concentrations in soil pore water under discontinuous flooding conditions, but slightly reduced them under continuous flooding. Moreover, the oxidation/reduction potential (Eh) was the most critical factor that affected the Cd levels. When the Eh exceeded -42.5 mV, S became the second critical factor, and excessive S application promoted Cd dissolution. In addition, S addition elevated the Cd levels in iron plaque and reduced the Cd transfer from the iron plaque to rice roots. In rice, S addition inhibited Cd transfer from the rice roots to the straw; thus, more Cd was stored in the rice roots. Nevertheless, additional S application increased the Cd content in the rice grains by 72% under discontinuous flooding, although this effect was mitigated by continued flooding. Under simulated practical water management conditions, S addition increased the risk of Cd contamination in rice, suggesting that S application should be reconsidered as a paddy fertilization strategy.

Authors+Show Affiliations

Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.Beijing Key Laboratory of Farmland Soil Pollution Prevention and Remediation, Key Laboratory of Plant-Soil Interactions of the Ministry of Education, College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China. Electronic address: wanyanan@cau.edu.cn.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

35305758

Citation

Liu, Zhe, et al. "The Risks of Sulfur Addition On Cadmium Accumulation in Paddy Rice Under Different Water-management Conditions." Journal of Environmental Sciences (China), vol. 118, 2022, pp. 101-111.
Liu Z, Wang QQ, Huang SY, et al. The risks of sulfur addition on cadmium accumulation in paddy rice under different water-management conditions. J Environ Sci (China). 2022;118:101-111.
Liu, Z., Wang, Q. Q., Huang, S. Y., Kong, L. X., Zhuang, Z., Wang, Q., Li, H. F., & Wan, Y. N. (2022). The risks of sulfur addition on cadmium accumulation in paddy rice under different water-management conditions. Journal of Environmental Sciences (China), 118, 101-111. https://doi.org/10.1016/j.jes.2021.08.022
Liu Z, et al. The Risks of Sulfur Addition On Cadmium Accumulation in Paddy Rice Under Different Water-management Conditions. J Environ Sci (China). 2022;118:101-111. PubMed PMID: 35305758.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The risks of sulfur addition on cadmium accumulation in paddy rice under different water-management conditions. AU - Liu,Zhe, AU - Wang,Qi-Qi, AU - Huang,Si-Yu, AU - Kong,Ling-Xuan, AU - Zhuang,Zhong, AU - Wang,Qi, AU - Li,Hua-Fen, AU - Wan,Ya-Nan, Y1 - 2022/01/11/ PY - 2021/06/01/received PY - 2021/08/11/revised PY - 2021/08/12/accepted PY - 2022/3/20/entrez PY - 2022/3/21/pubmed PY - 2022/3/23/medline KW - Accumulation KW - Cadmium KW - Iron plaque KW - Rice KW - Sulfur KW - Water management SP - 101 EP - 111 JF - Journal of environmental sciences (China) JO - J Environ Sci (China) VL - 118 N2 - Recently, the application of sulfur (S) has been recommended to control the accumulation of cadmium (Cd) in rice in contaminated paddy soil. However, the effects of exogenous S on Cd transfer in paddy rice systems under different water-management practices have not been systematically investigated. Pot experiments were performed to monitor the composition of soil pore water and the Cd accumulation in iron plaque and rice tissue were compared under different S (0 and 200 mg/kg Na2SO4) and water (continuous and discontinuous flooding) treatments. Sulfur application significantly increased Cd concentrations in soil pore water under discontinuous flooding conditions, but slightly reduced them under continuous flooding. Moreover, the oxidation/reduction potential (Eh) was the most critical factor that affected the Cd levels. When the Eh exceeded -42.5 mV, S became the second critical factor, and excessive S application promoted Cd dissolution. In addition, S addition elevated the Cd levels in iron plaque and reduced the Cd transfer from the iron plaque to rice roots. In rice, S addition inhibited Cd transfer from the rice roots to the straw; thus, more Cd was stored in the rice roots. Nevertheless, additional S application increased the Cd content in the rice grains by 72% under discontinuous flooding, although this effect was mitigated by continued flooding. Under simulated practical water management conditions, S addition increased the risk of Cd contamination in rice, suggesting that S application should be reconsidered as a paddy fertilization strategy. SN - 1001-0742 UR - https://www.unboundmedicine.com/medline/citation/35305758/The_risks_of_sulfur_addition_on_cadmium_accumulation_in_paddy_rice_under_different_water_management_conditions_ DB - PRIME DP - Unbound Medicine ER -
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