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Cross-Talk between Cadmium and Selenium at Elevated Cadmium Stress Determines the Fate of Selenium Uptake in Rice.
Biomolecules. 2019 06 24; 9(6)B

Abstract

Cadmium (Cd) is a well-known metal imposing threats to human health, and it can be accumulated in polished rice over the permitted range of 0.2 mg kg-1 (GB 2762-2017). It has been reported that selenium (Se) application decreases Cd uptake. Se-rich diets have gained attention recently, but the potential of Se-rich rice in mitigating Cd stress needs further investigation. In this study, a pot experiment in the field was conducted to assess the influence of environmental factors and exogenous split application of Se on the nutritional status of rice under Cd stress. The results indicated that the increased fertilizer treatment in soil bulk linearly increased the metal content in rice grains. Approximately 50-70% of metal was recovered in rice tissues, while 5-20% of the metal that was applied leached down into the soil. A Se concentration of 0.4 mg kg-1 could significantly improve the total Se content in grain and mitigate Cd toxicity (1 mg kg-1) below the permitted range. Panicles and roots were more active for total Se accumulation in Se-rich and non-Se-rich rice, respectively. Polishing and milling operations can significantly reduce the Cd content, as rice bran in rice tissues accumulated most of the metal's residues. The late matured rice cultivars consumed more heat units, and more metal contents were found in them. Collectively, it was found that Se can mitigate Cd toxicity, but the rice cultivation at T2 (high Cd; 2 mg kg-1 and Se; 1 mg kg-1) increased the metal uptake capability and health-risk index in polished rice, with its Se content heightened over permitted range of 0.04 to 0.30 mg kg-1 (GB/T 22499-2008). However, further molecular studies are required, in order to completely access the inverted Se accumulation behavior in rice tissues at high Cd soil stress.

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Authors+Show Affiliations

Farooq MU
Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China. umerpbguaf@gmail.com.
Tang Z
Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China. tangzhichen0516@gmail.com.
Zheng T
Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China. 13089068357@163.com.
Asghar MA
College of Agronomy, Sichuan Agricultural University, Chengdu 611130, Sichuan, China. ahsanasghar2017@outlook.com.
Zeng R
Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China. zengrui829@163.com. Dujiangyan Agricultural and Rural Bureau, Dujiangyan 611830, Sichuan, China. zengrui829@163.com.
Su Y
Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China. imsuxiaomeng@163.com.
Ei HH
Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China. hlahlaeidoaa@gmail.com.
Liang Y
Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China. ykliang77@163.com.
Zhang Y
Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China. rachel.zhangyujie@outlook.com.
Ye X
Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China. yeyixuana@163.com.
Jia X
Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China. jessicamei2372@sina.com.
Zhu J
Demonstration Base for International Science & Technology Cooperation of Sichuan Province, Rice Research Institute, Sichuan Agricultural University, Chengdu 611130, Sichuan, China. zhujianqing1963@163.com.

MeSH

Biological TransportCadmiumFertilizersHot TemperatureNutritional StatusOryzaRiskSeleniumSoil PollutantsStress, Physiological

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

31238551

Citation

Farooq, Muhammad Umer, et al. "Cross-Talk Between Cadmium and Selenium at Elevated Cadmium Stress Determines the Fate of Selenium Uptake in Rice." Biomolecules, vol. 9, no. 6, 2019.
Farooq MU, Tang Z, Zheng T, et al. Cross-Talk between Cadmium and Selenium at Elevated Cadmium Stress Determines the Fate of Selenium Uptake in Rice. Biomolecules. 2019;9(6).
Farooq, M. U., Tang, Z., Zheng, T., Asghar, M. A., Zeng, R., Su, Y., Ei, H. H., Liang, Y., Zhang, Y., Ye, X., Jia, X., & Zhu, J. (2019). Cross-Talk between Cadmium and Selenium at Elevated Cadmium Stress Determines the Fate of Selenium Uptake in Rice. Biomolecules, 9(6). https://doi.org/10.3390/biom9060247
Farooq MU, et al. Cross-Talk Between Cadmium and Selenium at Elevated Cadmium Stress Determines the Fate of Selenium Uptake in Rice. Biomolecules. 2019 06 24;9(6) PubMed PMID: 31238551.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cross-Talk between Cadmium and Selenium at Elevated Cadmium Stress Determines the Fate of Selenium Uptake in Rice. AU - Farooq,Muhammad Umer, AU - Tang,Zhichen, AU - Zheng,Tengda, AU - Asghar,Muhammad Ahsan, AU - Zeng,Rui, AU - Su,Yang, AU - Ei,Hla Hla, AU - Liang,Yuanke, AU - Zhang,Yujie, AU - Ye,Xiaoying, AU - Jia,Xiaomei, AU - Zhu,Jianqing, Y1 - 2019/06/24/ PY - 2019/05/10/received PY - 2019/06/20/revised PY - 2019/06/22/accepted PY - 2019/6/27/entrez PY - 2019/6/27/pubmed PY - 2020/2/19/medline KW - accumulation trend KW - cadmium and selenium crosstalk KW - non-selenium rich rice KW - selenium hyper-accumulation KW - selenium-rich rice JF - Biomolecules JO - Biomolecules VL - 9 IS - 6 N2 - Cadmium (Cd) is a well-known metal imposing threats to human health, and it can be accumulated in polished rice over the permitted range of 0.2 mg kg-1 (GB 2762-2017). It has been reported that selenium (Se) application decreases Cd uptake. Se-rich diets have gained attention recently, but the potential of Se-rich rice in mitigating Cd stress needs further investigation. In this study, a pot experiment in the field was conducted to assess the influence of environmental factors and exogenous split application of Se on the nutritional status of rice under Cd stress. The results indicated that the increased fertilizer treatment in soil bulk linearly increased the metal content in rice grains. Approximately 50-70% of metal was recovered in rice tissues, while 5-20% of the metal that was applied leached down into the soil. A Se concentration of 0.4 mg kg-1 could significantly improve the total Se content in grain and mitigate Cd toxicity (1 mg kg-1) below the permitted range. Panicles and roots were more active for total Se accumulation in Se-rich and non-Se-rich rice, respectively. Polishing and milling operations can significantly reduce the Cd content, as rice bran in rice tissues accumulated most of the metal's residues. The late matured rice cultivars consumed more heat units, and more metal contents were found in them. Collectively, it was found that Se can mitigate Cd toxicity, but the rice cultivation at T2 (high Cd; 2 mg kg-1 and Se; 1 mg kg-1) increased the metal uptake capability and health-risk index in polished rice, with its Se content heightened over permitted range of 0.04 to 0.30 mg kg-1 (GB/T 22499-2008). However, further molecular studies are required, in order to completely access the inverted Se accumulation behavior in rice tissues at high Cd soil stress. SN - 2218-273X UR - https://www.unboundmedicine.com/medline/citation/31238551/Cross_Talk_between_Cadmium_and_Selenium_at_Elevated_Cadmium_Stress_Determines_the_Fate_of_Selenium_Uptake_in_Rice_ DB - PRIME DP - Unbound Medicine ER -