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Sulfur application modifies cadmium availability and transfer in the soil-rice system under unstable pe+pH conditions.
Ecotoxicol Environ Saf. 2019 Nov 30; 184:109641.EE

Abstract

The objective of this study was to investigate the responses of cadmium (Cd) availability and transfer in the soil-rice system to added sulfur (S) under unstable pe + pH conditions. Different water management conditions (flooding and aerobic treatments) cause changes in the soil pe + pH. We conducted a pot experiment to investigate the influence of S supply on soil Cd availability and Cd accumulation in rice plants (Oryza sativa L.), using three water regimes (continuous dryness, alternating dry-wet for one cycle, and continuous flooding) combined with two S concentrations (0 and 300 mg/kg). The results showed that the flooding treatment was more effective in decreasing soil pe + pH, Cd availability, and Cd accumulation in rice tissues than were the aerobic treatments. S-induced reduction in Cd uptake and translocation in rice was attributed to the decreased soil pe + pH values and enhanced biosynthesis of phytochelatins (PCs) and glutathione (GSH) in rice roots. Microscopic examination showed that the flooding treatment with added soil S resulted in better rice root growth. Element dispersive spectrometer (EDS) analysis indicated that S addition and flooding treatment promoted the formation of iron plaques and increases in Fe concentration in rice tissues. Conversely, partial disintegration of the root epidermis was observed in the dry treatment without added S.

Authors+Show Affiliations

Key Laboratory of Plant Nutrition and Fertilizer, Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China.Key Laboratory of Plant Nutrition and Fertilizer, Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China. Electronic address: wangmeng@caas.cn.Key Laboratory of Plant Nutrition and Fertilizer, Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China. Electronic address: chenshibao@caas.cn.Key Laboratory of Plant Nutrition and Fertilizer, Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China.Key Laboratory of Plant Nutrition and Fertilizer, Agriculture and Rural Affairs/Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31518827

Citation

Zheng, Han, et al. "Sulfur Application Modifies Cadmium Availability and Transfer in the Soil-rice System Under Unstable pe+pH Conditions." Ecotoxicology and Environmental Safety, vol. 184, 2019, p. 109641.
Zheng H, Wang M, Chen S, et al. Sulfur application modifies cadmium availability and transfer in the soil-rice system under unstable pe+pH conditions. Ecotoxicol Environ Saf. 2019;184:109641.
Zheng, H., Wang, M., Chen, S., Li, S., & Lei, X. (2019). Sulfur application modifies cadmium availability and transfer in the soil-rice system under unstable pe+pH conditions. Ecotoxicology and Environmental Safety, 184, 109641. https://doi.org/10.1016/j.ecoenv.2019.109641
Zheng H, et al. Sulfur Application Modifies Cadmium Availability and Transfer in the Soil-rice System Under Unstable pe+pH Conditions. Ecotoxicol Environ Saf. 2019 Nov 30;184:109641. PubMed PMID: 31518827.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Sulfur application modifies cadmium availability and transfer in the soil-rice system under unstable pe+pH conditions. AU - Zheng,Han, AU - Wang,Meng, AU - Chen,Shibao, AU - Li,Shanshan, AU - Lei,Xiaoqin, Y1 - 2019/09/10/ PY - 2019/07/06/received PY - 2019/08/31/revised PY - 2019/09/03/accepted PY - 2019/9/14/pubmed PY - 2019/12/18/medline PY - 2019/9/14/entrez KW - Cadmium KW - Heavy metal transfer KW - Rice paddy KW - Sulfur KW - Unstable pe+pH SP - 109641 EP - 109641 JF - Ecotoxicology and environmental safety JO - Ecotoxicol Environ Saf VL - 184 N2 - The objective of this study was to investigate the responses of cadmium (Cd) availability and transfer in the soil-rice system to added sulfur (S) under unstable pe + pH conditions. Different water management conditions (flooding and aerobic treatments) cause changes in the soil pe + pH. We conducted a pot experiment to investigate the influence of S supply on soil Cd availability and Cd accumulation in rice plants (Oryza sativa L.), using three water regimes (continuous dryness, alternating dry-wet for one cycle, and continuous flooding) combined with two S concentrations (0 and 300 mg/kg). The results showed that the flooding treatment was more effective in decreasing soil pe + pH, Cd availability, and Cd accumulation in rice tissues than were the aerobic treatments. S-induced reduction in Cd uptake and translocation in rice was attributed to the decreased soil pe + pH values and enhanced biosynthesis of phytochelatins (PCs) and glutathione (GSH) in rice roots. Microscopic examination showed that the flooding treatment with added soil S resulted in better rice root growth. Element dispersive spectrometer (EDS) analysis indicated that S addition and flooding treatment promoted the formation of iron plaques and increases in Fe concentration in rice tissues. Conversely, partial disintegration of the root epidermis was observed in the dry treatment without added S. SN - 1090-2414 UR - https://www.unboundmedicine.com/medline/citation/31518827/Sulfur_application_modifies_cadmium_availability_and_transfer_in_the_soil_rice_system_under_unstable_pe+pH_conditions_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0147-6513(19)30972-8 DB - PRIME DP - Unbound Medicine ER -