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Foliar application with nano-silicon reduced cadmium accumulation in grains by inhibiting cadmium translocation in rice plants.
Environ Sci Pollut Res Int. 2018 Jan; 25(3):2361-2368.ES

Abstract

Nano-silicon (Si) may be more effective than regular fertilizers in protecting plants from cadmium (Cd) stress. A field experiment was conducted to study the effects of nano-Si on Cd accumulation in grains and other organs of rice plants (Oryza sativa L. cv. Xiangzaoxian 45) grown in Cd-contaminated farmland. Foliar application with 5~25 mM nano-Si at anthesis stage reduced Cd concentrations in grains and rachises at maturity stage by 31.6~64.9 and 36.1~60.8%, respectively. Meanwhile, nano-Si application significantly increased concentrations of potassium (K), magnesium (Mg), and iron (Fe) in grains and rachises, but imposed little effect on concentrations of calcium (Ca), zinc (Zn), and manganese (Mn) in them. Uppermost nodes under panicles displayed much higher Cd concentration (4.50~5.53 mg kg-1) than other aerial organs. After foliar application with nano-Si, translocation factors (TFs) of Cd ions from the uppermost nodes to rachises significantly declined, but TFs of K, Mg, and Fe from the uppermost nodes to rachises increased significantly. High dose of nano-Si (25 mM) was more effective than low dose of nano-Si in reducing TFs of Cd from roots to the uppermost nodes and from the uppermost nodes to rachises. These findings indicate that nano-Si supply reduces Cd accumulation in grains by inhibiting translocation of Cd and, meanwhile, promoting translocation of K, Mg, and Fe from the uppermost nodes to rachises in rice plants.

Authors+Show Affiliations

Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin, 300191, People's Republic of China.Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin, 300191, People's Republic of China.Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin, 300191, People's Republic of China.Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin, 300191, People's Republic of China.Agro-Environmental Protection Institute, Ministry of Agriculture, Tianjin, 300191, People's Republic of China. liuzhongqi508@163.com.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29124638

Citation

Chen, Rui, et al. "Foliar Application With Nano-silicon Reduced Cadmium Accumulation in Grains By Inhibiting Cadmium Translocation in Rice Plants." Environmental Science and Pollution Research International, vol. 25, no. 3, 2018, pp. 2361-2368.
Chen R, Zhang C, Zhao Y, et al. Foliar application with nano-silicon reduced cadmium accumulation in grains by inhibiting cadmium translocation in rice plants. Environ Sci Pollut Res Int. 2018;25(3):2361-2368.
Chen, R., Zhang, C., Zhao, Y., Huang, Y., & Liu, Z. (2018). Foliar application with nano-silicon reduced cadmium accumulation in grains by inhibiting cadmium translocation in rice plants. Environmental Science and Pollution Research International, 25(3), 2361-2368. https://doi.org/10.1007/s11356-017-0681-z
Chen R, et al. Foliar Application With Nano-silicon Reduced Cadmium Accumulation in Grains By Inhibiting Cadmium Translocation in Rice Plants. Environ Sci Pollut Res Int. 2018;25(3):2361-2368. PubMed PMID: 29124638.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Foliar application with nano-silicon reduced cadmium accumulation in grains by inhibiting cadmium translocation in rice plants. AU - Chen,Rui, AU - Zhang,Changbo, AU - Zhao,Yanling, AU - Huang,Yongchun, AU - Liu,Zhongqi, Y1 - 2017/11/09/ PY - 2017/06/12/received PY - 2017/11/02/accepted PY - 2017/11/11/pubmed PY - 2018/11/8/medline PY - 2017/11/11/entrez KW - Cadmium KW - Contaminated farmland KW - Foliar application KW - Nano-silicon KW - Rice SP - 2361 EP - 2368 JF - Environmental science and pollution research international JO - Environ Sci Pollut Res Int VL - 25 IS - 3 N2 - Nano-silicon (Si) may be more effective than regular fertilizers in protecting plants from cadmium (Cd) stress. A field experiment was conducted to study the effects of nano-Si on Cd accumulation in grains and other organs of rice plants (Oryza sativa L. cv. Xiangzaoxian 45) grown in Cd-contaminated farmland. Foliar application with 5~25 mM nano-Si at anthesis stage reduced Cd concentrations in grains and rachises at maturity stage by 31.6~64.9 and 36.1~60.8%, respectively. Meanwhile, nano-Si application significantly increased concentrations of potassium (K), magnesium (Mg), and iron (Fe) in grains and rachises, but imposed little effect on concentrations of calcium (Ca), zinc (Zn), and manganese (Mn) in them. Uppermost nodes under panicles displayed much higher Cd concentration (4.50~5.53 mg kg-1) than other aerial organs. After foliar application with nano-Si, translocation factors (TFs) of Cd ions from the uppermost nodes to rachises significantly declined, but TFs of K, Mg, and Fe from the uppermost nodes to rachises increased significantly. High dose of nano-Si (25 mM) was more effective than low dose of nano-Si in reducing TFs of Cd from roots to the uppermost nodes and from the uppermost nodes to rachises. These findings indicate that nano-Si supply reduces Cd accumulation in grains by inhibiting translocation of Cd and, meanwhile, promoting translocation of K, Mg, and Fe from the uppermost nodes to rachises in rice plants. SN - 1614-7499 UR - https://www.unboundmedicine.com/medline/citation/29124638/Foliar_application_with_nano_silicon_reduced_cadmium_accumulation_in_grains_by_inhibiting_cadmium_translocation_in_rice_plants_ L2 - https://dx.doi.org/10.1007/s11356-017-0681-z DB - PRIME DP - Unbound Medicine ER -